List of the Cenozoic life of Wyoming
This list of the Cenozoic life of Wyoming contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wyoming and are between 66 million and 10,000 years of age.
A
[edit]- †Aaptoryctes
- †Absarokius
- †Absarokius abbotti
- †Absarokius gazini – type locality for species
- †Absarokius metoecus – type locality for species
- †Abuta – or unidentified related form
- †Acacia
- †Acarictis
- †Acarictis ryani – type locality for species
- Accipiter
- Acer
- †Aceroryctes – type locality for genus
- †Aceroryctes dulcis – type locality for species
- †Achaenodon
- †Achaenodon insolens – type locality for species
- †Achaenodon robustus – type locality for species
- †Acidomomys – type locality for genus
- †Acidomomys hebeticus – type locality for species
- †Acmeodon
- †Acocephalus
- †Acocephalus adae – type locality for species
- †Acritoparamys
- Acrostichum
- †Adilophontes – type locality for genus
- †Adilophontes brachykolos – type locality for species
- †Adjidaumo
- †Adjidaumo burkei – tentative report
- †Adjidaumo craigi – or unidentified comparable form
- †Adjidaumo minimus
- †Adocus
- †Adunator
- Aegialia
- †Aegialia rupta – type locality for species
- Aegolius
- †Aepycamelus
- †Aerugoamnis – type locality for genus
- †Aerugoamnis paulus – type locality for species
- †Aesculus
- †Afairiguana – type locality for genus
- †Afairiguana avius – type locality for species
- †Ageina
- †Ageitodendron
- Agelaius
- †Agnotocastor
- †Agnotocastor galushai – type locality for species
- †Agriochoerus
- †Agriochoerus maximus
- †Agriochoerus minimus – or unidentified comparable form
- Ailanthus
- †Alagomys
- †Alagomys russelli – type locality for species
- †Alastor
- †Alastor solidescens – type locality for species
- †Albertanella – or unidentified comparable form
- Alces
- †Aletodon
- †Aletodon conardae – type locality for species
- †Aletodon gunnelli – type locality for species
- †Aletodon quadravus
- †Aletomeryx
- †Aletornis – type locality for genus
- †Aletornis bellus – type locality for species
- †Aletornis gracilis – type locality for species
- †Aletornis nobilis – type locality for species
- †Aletornis pernix – type locality for species
- †Aletornis venustus – type locality for species
- Aleurites
- †Alismaphyllites
- †Allantodiopsis
- †Allognathosuchus
- †Allognathosuchus heterodon
- †Allognathosuchus polyodon
- †Allognathosuchus wartheni – type locality for species
- †Allomys
- †Allophylus
- Alnus[citation needed]
- †Alphagaulus
- †Alticonus
- †Alveojunctus
- †Alveugena
- †Alveugena carbonensis – type locality for species
- †Amaramnis
- †Amaramnis gregoryi – type locality for species
- †Ambloctonus
- †Ambloctonus major
- †Ambloctonus priscus – or unidentified comparable form
- †Ambloctonus sinosus
- †Ameiseophis
- †Ameiseophis robinsoni – type locality for species
- †Amelotabes – type locality for genus
- †Amelotabes simpsoni – type locality for species
- Amentotaxus
- Amia
- †Amitabha – type locality for genus
- †Amitabha urbsinterdictensis – type locality for species
- †Ampelopsis
- †Amphechinus
- †Amphechinus ellicottae – type locality for species
- †Amphigyion
- †Amphilemur
- †Amphiplaga
- Amphiuma
- †Amphiuma jepseni – type locality for species
- †Ampliconus
- †Ampliconus antoni – type locality for species
- Amyda
- †Amyda egregia – type locality for species
- †Amyda exquisita – type locality for species
- †Amyda mira – type locality for species
- †Amynodon
- †Anacardites
- Anaclinia – tentative report
- †Anacodon
- †Anacodon nexus – type locality for species
- †Anacodon ursidens
- Anamirta – or unidentified comparable form
- †Anaptomorphus
- †Anaptomorphus aemulus – type locality for species
- †Anaptomorphus westi – type locality for species
- Anas
- †Anas acuta
- Anas clypeata
- †Anas crecca
- Anas platyrhynchos
- †Anas schneideri – type locality for species
- †Anatella
- †Anatella tacita – type locality for species
- †Anconodon
- †Anemia
- †Anemorhysis
- †Anemorhysis natronensis – type locality for species
- †Anemorhysis pattersoni – type locality for species
- †Anemorhysis sublettensis – type locality for species
- †Anemorhysis wortmani – type locality for species
- †Anilioides
- †Anisonchus
- †Anisonchus sectorius
- †Anisonchus willeyi – type locality for species
- †Ankylodon
- †Ankylodon annectens – or unidentified comparable form
- †Anniealexandria – type locality for genus
- †Anniealexandria gansi – type locality for species
- Anobium
- †Anobium deceptum – type locality for species
- †Anobium lignitum – type locality for species
- †Anobium ovale – type locality for species
- †Anolbanolis – type locality for genus
- †Anolbanolis banalis – type locality for species
- †Anolbanolis geminus – type locality for species
- †Anomoemys
- †Anosteira
- †Anosteira ornata
- †Anosteira radulina – type locality for species
- †Anosteira trionychoides
- †Antherophagus
- †Antherophagus priscus – type locality for species
- Anthonomus
- †Anthonomus revictus – type locality for species
- †Anthonomus soporus – type locality for species
- †Antiacodon
- †Antiacodon pygmaeus – type locality for species
- †Antiacodon vanvaleni – type locality for species
- †Antiacodon venustus – type locality for species
- Antilocapra
- Apalone
- †Apalone extensa – type locality for species
- †Apalone heteroglypta – type locality for species
- †Apalone postera – type locality for species
- †Apatemys
- †Apatemys bellulus – type locality for species
- †Apatemys bellus
- †Apatemys chardini – or unidentified comparable form
- †Apatemys hendryi – type locality for species
- †Apatemys rodens
- †Aphaena
- †Aphaena rotundipennis – type locality for species
- †Apheliscus – type locality for genus
- †Apheliscus chydaeus – type locality for species
- †Apheliscus insidiosus
- †Apheliscus nitidus
- †Apheliscus wapitiensis – type locality for species
- †Aphelops
- †Aphronorus
- †Aphronorus fraudator
- †Aphronorus orieli – type locality for species
- †Aphronorus ratatoski – type locality for species
- †Apodosauriscus – type locality for genus
- †Apodosauriscus minutus – type locality for species
- †Apodosauriscus thermophilus – type locality for species
- †Apriculus
- †Apriculus praeteritus – type locality for species
- †Apternodus
- †Apternodus brevirostris – type locality for species
- †Apternodus dasophylakas – type locality for species
- †Apternodus gregoryi – type locality for species
- †Apternodus iliffensis
- †Apternodus major – type locality for species
- Aquila
- †Aquila antiqua – type locality for species
- Aquila chrysaetos
- Aralia
- †Araliophyllum
- Araneus
- †Arapahovius
- †Arapahovius advena – type locality for species
- †Arapahovius gazini – type locality for species
- Araucaria
- †Archaeocyon
- †Archaeolagus
- †Archaeotherium
- †Archaeotherium minimus
- †Archaeotherium mortoni
- †Archaeotherium palustris – type locality for species
- †Archaerhineura – type locality for genus
- †Archaerhineura mephitis – type locality for species
- Arcoa[1]
- †Arcoa lindgreni – type locality for species[1]
- †Arctocyon
- †Arctodontomys
- †Arctodontomys nuptus
- †Arctodontomys simplicidens
- †Arctodontomys wilsoni – type locality for species
- †Arctodus
- †Arctostaphylos
- †Arctostylops
- †Arecipites
- †Arenahippus
- †Arenahippus aemulor – type locality for species
- †Arenahippus pernix – type locality for species
- †Arfia
- †Arfia junnei
- †Arfia opisthotoma
- †Arfia shoshoniensis
- †Arfia zele – type locality for species
- Aristolochia
- †Armintodelphys
- †Armintomys
- †Arpadosaurus – type locality for genus
- †Arpadosaurus gazinorum – type locality for species
- †Arpadosaurus sepulchralis – type locality for species
- †Artimonius
- Artocarpus – tentative report
- †Asarkina
- †Asarkina quadrata – type locality for species
- †Asiabradypus – or unidentified comparable form
- Asio
- †Asplenium
- †Astephus
- †Asterotrygon
- Astronium
- †Athyana
- †Aulolithomys
- †Aulolithomys bounites
- †Aulolithomys vexilliames – type locality for species
- †Auroralestes
- †Auxontodon
- †Averrhoites
- †Avunculus
- †Avunculus didelphodonti – or unidentified comparable form
- †Axestemys – type locality for genus
- †Axestemys byssina – type locality for species
- †Axestemys cerevisia – type locality for species
- †Axestemys salebrosa – type locality for species
- †Axestemys uintaensis – type locality for species
- †Aycrossia
- Aythya
- Azolla
- †Azygonyx
- †Azygonyx ancylion – type locality for species
- †Azygonyx grangeri
- †Azygonyx xenicus – type locality for species
B
[edit]- †Babibasiliscus – type locality for genus
- †Babibasiliscus alxi – type locality for species
- †Baena
- †Baena arenosa – type locality for species
- †Bahndwivici – type locality for genus
- †Bahndwivici ammoskius – type locality for species
- †Baioconodon
- †Baioconodon denverensis – or unidentified comparable form
- †Baioconodon middletoni – type locality for species
- †Baioconodon nordicus
- †Baioconodon wovokae
- †Baiotomeus
- †Baltemys – type locality for genus
- †Baltemys staurogastros – type locality for species
- †Baptemys
- †Baptemys wyomingensis – type locality for species
- †Barbouromeryx – or unidentified comparable form
- †Barylambda
- †Barylambda churchilli – type locality for species
- †Barylambda faberi
- †Bathornis
- †Bathornis fricki – type locality for species
- †Bathygenys
- †Bathyopsis
- †Batodonoides
- †Batodonoides vanhouteni – type locality for species
- †Batrachosauroides – tentative report
- Bauhinia
- †Beilschmiedia
- †Berchemiopsis
- †Beringiaphyllum
- †Berosus
- †Berosus sexstriatus – type locality for species
- †Berosus tenuis – type locality for species
- †Bessoecetor
- Betula
- Biomphalaria
- Bison
- †Bisonalveus – type locality for genus
- †Bisonalveus browni – type locality for species
- †Bisonalveus holtzmani – type locality for species
- †Blechnum
- Bledius
- †Bledius adamus – type locality for species
- †Bledius faecorum – type locality for species
- †Blickomylus
- †Boavus – type locality for genus
- †Boavus brevis – type locality for species
- †Boavus idelmani – type locality for species
- †Boavus occidentalis – type locality for species
- Boletina
- †Boletina paludivaga – type locality for species
- †Boletina umbratica – type locality for species
- †Bootherium
- †Borealosuchus
- †Borealosuchus formidabilis
- †Borealosuchus wilsoni – type locality for species
- †Botauroides – type locality for genus
- †Botauroides parvus – type locality for species
- †Bouromeryx
- †Boverisuchus
- †Bownomomys – type locality for genus[2]
- †Bownomomys americanus – type locality for species. Formerly known as Teilhardina americana.[2]
- †Bownomomys crassidens – type locality for species. Formerly known as Teilhardina crassidens.[2]
- †Boysia – or unidentified comparable form
- †Brachianodon
- †Brachianodon westorum – type locality for species
- †Brachycrus
- †Brachyerix
- †Brachyhyops
- †Brachyhyops viensis
- †Brachyhyops wyomingensis – type locality for species
- †Brachyrhynchocyon
- †Brachyuranochampsa – type locality for genus
- †Brachyuranochampsa eversolei – type locality for species
- Bracon
- †Bracon laminarum – type locality for species
- Branta
- †Bridgeremys
- †Bridgeremys pusilla – type locality for species
- †Brontops
- †Browniea
- †Bryophyte – or unidentified related form
- Bubo
- †Bunophorus
- †Bunophorus etsagicus
- †Bunophorus grangeri
- †Bunophorus macropternus
- †Bunophorus robustus
- †Bunophorus sinclairi – type locality for species
- †Bunrsera
- Buteo
- †Buteo jamaicensis
- †Buteo lagopus
- †Buteo regalis – or unidentified comparable form
- Buteogallus
C
[edit]- †Caedocyon
- †Caedocyon tedfordi – type locality for species
- †Caenolambda – type locality for genus
- †Caenolambda jepseni – type locality for species
- †Caenolambda pattersoni – type locality for species
- †Caenopus
- †Caenopus yoderensis – type locality for species
- †Caesalpinia
- †Caesalpinites
- †Caesalpinites falcata – type locality for species
- †Calamagras
- †Calamagras angulatus – or unidentified comparable form
- †Calamagras platyspondyla
- †Calamagras primus – type locality for species
- †Calamagras weigeli
- †Calamospiza
- †Calandrites
- †Calcardea – type locality for genus
- †Calcardea junnei – type locality for species
- Calidris
- †Callomyia
- †Callomyia torporata – type locality for species
- †Callospilopteron – type locality for genus
- †Callospilopteron ocellatum – type locality for species
- †Calycites
- †Calycites ardtunensis
- †Calycites hexaphylla
- †Calycites mikanoides
- †Calycites polysepala
- †Calycites RR58 informal
- †Calycites RR71 informal
- †Camelops
- †Camelops hesternus – or unidentified comparable form
- †Canarium
- †Canavalia
- Canis
- †Cantius
- †Cantius abditus – type locality for species
- †Cantius frugivorus
- †Cantius mckennai
- †Cantius nunienus
- †Cantius ralstoni
- †Cantius simonsi – type locality for species
- †Cantius torresi
- †Cantius trigonodus – type locality for species
- †Capacikala
- †Capacikala parvus – type locality for species
- Capella
- †Carabites
- †Carabites kincaidi – type locality for species
- Caracara
- †Cardichelyon – type locality for genus
- †Cardichelyon rogerwoodi – type locality for species
- †Cardiolophus
- †Cardiolophus radinskyi – type locality for species
- †Cardiolophus semihians
- Cardiospermum
- Carduelis
- †Carpites
- †Carpodaptes
- †Carpolestes
- †Carpolestes dubius – type locality for species
- †Carpolestes nigridens
- †Carpolestes simpsoni – type locality for species
- †Carpolithes
- Carya
- Castanea
- Castor
- †Catopsalis
- Cedrela
- †Cedrelospermum
- †Cedrobaena – type locality for genus
- †Cedrocherus
- †Cedrocherus aceratus – type locality for species
- †Cedrocherus ryani – type locality for species
- †Cedromus
- †Celastrus
- †Celliforma
- Celtis
- †Centetodon
- †Centrinus
- †Centrinus diruptus – type locality for species
- †Centrocercus
- †Cephalogale
- †Ceratophyllum
- †Ceratosuchus
- Cercidiphyllum
- †Cercidiphyllum arcticum
- †Cercidiphyllum articum
- †Cercidiphyllum BB21 informal
- †Cercidiphyllum BB34-52 informal
- †Cercidiphyllum genetrix
- †Cercidiphyllum tiny winged seeds informal
- †Cercidiphyllum tiny wingedseeds informal
- †Cercopis
- †Cercopis astricta – type locality for species
- †Cercopites – type locality for genus
- †Cercopites calliscens – type locality for species
- †Cercopites umbratilis – type locality for species
- †Ceutholestes
- †Chadrolagus
- †Chaetoptelea
- †Chaetoptelea microphylla
- †Chaetoptelea pseudofulva – tentative report
- †Chalicomomys
- †Chalicomomys willwoodensis – type locality for species
- †Champsosaurus
- †Chaneya
- Chara
- Charadrius
- Charina
- Cheilosia
- †Cheilosia ampla – type locality for species
- †Cheilosia scudderi
- †Chelomophrynus – type locality for genus
- †Chelomophrynus bayi – type locality for species
- †Chilostigma – tentative report
- †Chiromyoides
- †Chiromyoides caesor – type locality for species
- †Chiromyoides major – type locality for species
- †Chiromyoides minor – type locality for species
- †Chiromyoides potior
- Chironomus
- †Chironomus septus – type locality for species
- †Chisternon
- †Chisternon hebraicum – type locality for species
- †Chisternon undatum – type locality for species
- †Chlororhysis
- †Chlororhysis incomptus – type locality for species
- †Chlororhysis knightensis – type locality for species
- †Choctawius – or unidentified comparable form
- †Cholula
- †Cholula triguttata – type locality for species
- †Choragus
- †Choragus fictilis – type locality for species
- †Chordeiles
- †Chriacus
- †Chumashius
- †Cicadula
- †Cicadula saxosa – type locality for species
- †Cimolestes
- †Cinnamomophyllum
- †Cinnamomophyllum RR19 informal
- Cinnamomum
- Circus
- †Cissites
- Cissus
- †Cixius – tentative report
- †Cixius hesperidum – type locality for species
- Cladrastis
- †Cladrastis GR579 informal
- †Cladrastis GR580 informal
- †Claenodon
- †Cnemidaria
- †Coccothraustes
- Cocculus
- †Coelidia
- †Coelidia wyomingensis – type locality for species
- Colaptes
- †Colodon
- †Colpocherus
- †Colpoclaenus
- †Colpoclaenus keeferi – type locality for species
- †Colpoclaenus procyonoides – or unidentified comparable form
- Colymbus
- †Compsemys
- †Conacodon
- †Conacodon cophater – or unidentified comparable form
- †Conacodon delphae
- †Coniophis
- †Coniophis carinatus – type locality for species
- †Coniophis platycarinatus – type locality for species
- †Copecion
- †Copedelphys
- †Copelemur
- †Copelemur australotutus – type locality for species
- †Copelemur praetutus
- †Copelemur tutus
- †Copemys
- †Coriphagus
- †Coriphagus encinensis – or unidentified comparable form
- †Coriphagus montanus
- †Corizus – tentative report
- †Corizus guttatus – type locality for species
- †Cormocyon
- Cornus
- Corvus
- †Corylites
- †Corylites FW01 informal
- †Corylus
- Corymbites
- †Corymbites velatus – type locality for species
- †Coryphodon
- †Cranea
- Crataegus
- †Credneria
- †Credneria daturaefolia – tentative report
- †Credneria pachyphylla
- †Cristadjidaumo
- †Cristadjidaumo skinneri – type locality for species
- Crocodylus
- †Crocodylus affinis – type locality for species
- †Crocodylus ziphodon – type locality for species
- †Cryptocephalus
- †Cryptocephalus vetustus – type locality for species
- Cryptorhynchus
- †Cryptorhynchus annosus – type locality for species
- Cryptotis
- Culex
- †Culex damnatorum – type locality for species
- †Cupanieidites
- †Cupidinimus
- †Cycadopites
- Cyclocarya
- †Cyclurus
- †Cylindrodon
- †Cylindrodon natronensis – type locality for species
- †Cylindrodon solarborus – type locality for species
- †Cynarctoides
- †Cynarctoides acridens
- †Cynarctoides harlowi
- †Cynarctoides luskensis – type locality for species
- †Cyperacites
- †Cyriacotherium
- †Cyriacotherium argyreum – type locality for species
- †Cyriacotherium psamminum – type locality for species
- †Cyrilavis
- †Cyrilavis olsoni – type locality for species
- †Cyrtomenus
- †Cyrtomenus concinnus – type locality for species
D
[edit]- †Dalbergia
- †Daphoenictis
- †Daphoenodon
- †Daphoenodon falkenbachi – type locality for species
- †Daphoenodon niobrarensis
- †Daphoenodon skinneri – type locality for species
- †Daphoenodon superbus
- †Daphoenus
- †Dartonius
- Dasyatis
- †Davidia
- †Dawsonicyon – type locality for genus
- †Dawsonicyon isami – type locality for species
- †Dawsonomys
- †Dawsonophis – type locality for genus
- †Dawsonophis wyomingensis – type locality for species
- †Debeya
- †Decatoma
- †Decatoma antiqua – type locality for species
- †Delotrochanter
- †Delotrochanter major – type locality for species
- Dendragapus
- †Dendropanax
- †Dennstaedia
- †Dennstaedtia
- †Dennstaedtiopsis
- †Desmatippus
- †Desmatochoerus
- †Desmatoclaenus
- †Desmatolagus
- †Desmatotherium
- †Desmocyon
- †Devallia – tentative report
- †Diacocherus
- †Diacocherus meizon – type locality for species
- †Diacocherus minutus
- †Diacodexis
- †Diacodexis ilicis
- †Diacodexis kelleyi
- †Diacodexis kellyi
- †Diacodexis metsiacus
- †Diacodexis minutus
- †Diacodexis primus
- †Diacodexis secans
- †Diacodexis woltonensis – type locality for species
- †Diacodon
- †Diaplegma
- †Diaplegma obdormitum – type locality for species
- †Diatryma – type locality for genus
- †Diatryma gigantea – type locality for species
- †Diceratherium
- Dicotylophyllum
- Dicranomyia
- †Dicranomyia primitiva
- †Dicranomyia rhodolitha – type locality for species
- Dicrostonyx
- †Didelphodontine
- †Didelphodus
- †Didymictis
- †Didymictis altidens
- †Didymictis leptomylus
- †Didymictis protenus
- †Didymictis proteus
- †Didymictis vancleveae – or unidentified comparable form
- †Dillerlemur
- †Dillerlemur pagei
- †Dillerlemur robinettei – type locality for species
- †Dilophodon
- †Dilophodon destitutus – type locality for species
- †Dilophodon minusculus
- †Dinictis
- †Dinohyus
- †Diospyros
- †Dipassalus
- †Diplobunops
- †Diplocynodon
- †Diplolophus
- †Diplolophus insolens – type locality for species
- †Diplomystus
- †Dipoides
- †Dipsalidictis
- †Dipsalidictis aequidens
- †Dipsalidictis krausei – type locality for species
- †Dipsalidictis platypus – type locality for species
- †Dipsalidictis transiens
- †Dipsalodon
- †Dipsalodon churchillorum
- †Dipsalodon matthewi – type locality for species
- Dipteronia
- †Dipteronia GR551 informal
- †Dipteronia insignis
- Discus
- †Dissacus
- †Dissacus argenteus – type locality for species
- †Dissacus longaevus
- †Dissacus navajovius
- †Dissacus praenuntius
- †Distylium
- †Dithelysia
- Dolichopus
- †Dombeya
- †Domnina
- †Domnina gradata – or unidentified comparable form
- †Domninoides
- †Domninoides valentinensis – or unidentified comparable form
- †Dorraletes
- †Douglassciurus
- †Drimys
- Dryocoetes
- †Dryocoetes carbonarius – type locality for species
- †Dryocoetes impressus
- †Dryomomys – type locality for genus
- †Dryomomys dulcifer – type locality for species
- †Dryomomys szalayi – type locality for species
- Dryopteris
- †Dunnophis
- †Dunnophis microechinis – type locality for species
- †Dunnophis microechinus
- †Dysagrion – type locality for genus
- †Dysagrion fredericii – type locality for species
- †Dysagrion lakesii – type locality for species
- †Dysagrion packardii – type locality for species
E
[edit]- †Echmatemys
- †Echmatemys haydeni
- †Echmatemys lativertebralis
- †Echmatemys megaulax
- †Echmatemys rivalis – type locality for species
- †Echmatemys septaria
- †Echmatemys testudinea
- †Echmatemys wyomingensis
- †Eclytus
- †Eclytus lutatus – type locality for species
- †Ectocion
- †Ectocion cedrus – type locality for species
- †Ectocion collinus – type locality for species
- †Ectocion major – or unidentified comparable form
- †Ectocion mediotuber – type locality for species
- †Ectocion osbornianus
- †Ectocion parvus
- †Ectocion superstes
- †Ectoconus
- †Ectoconus cavigellii – type locality for species
- †Ectoconus ditrigonus
- †Ectoganus
- †Ectopistes
- †Ectopocynus
- †Ectopocynus antiquus – type locality for species
- †Ectopocynus intermedius – type locality for species
- †Ectypodus
- †Ectypodus aphronorus
- †Ectypodus childei – or unidentified comparable form
- †Ectypodus hazeni – type locality for species
- †Ectypodus laytoni – type locality for species
- †Ectypodus lovei
- †Ectypodus musculus
- †Ectypodus powelli – type locality for species
- †Ectypodus simpsoni
- †Ectypodus szalayi
- †Ectypodus tardus
- †Elaeodendron
- †Ellipsodon
- †Ellipsodon lemuroides – or unidentified comparable form
- †Elphidotarsius
- †Elphidotarsius florencae – or unidentified comparable form
- †Elphidotarsius shotgunensis
- †Elpidophorus
- †Elpidophorus elegans
- †Elpidophorus minor – or unidentified comparable form
- †Elwynella – type locality for genus
- †Elwynella oreas – type locality for species
- †Enhydrocyon
- Enochrus
- †Enochrus primaevus – type locality for species
- †Entelodon
- †Entelodon coarctatus – or unidentified comparable form
- †Entomolestes – type locality for genus
- †Entomolestes grangeri – type locality for species
- †Entomolestes westgatei – type locality for species
- †Entomophontes – type locality for genus
- †Entomophontes hutchisoni – type locality for species
- †Entomophontes incrustatus – type locality for species
- †Entoptychus
- †Eobasileus
- †Eobucco
- †Eocalopteryx
- †Eocalopteryx atavina – type locality for species
- †Eoceornis – type locality for genus
- †Eoceornis ardetta – type locality for species
- †Eoconodon
- †Eocrex – type locality for genus
- †Eocrex primus – type locality for species
- †Eodiploglossus – type locality for genus
- †Eodiploglossus borealis – type locality for species
- †Eoerianthus
- †Eoformica
- †Eoformica pinguis – type locality for species
- †Eofringillirostrum – type locality for genus[3]
- †Eofringillirostrum boudreauxi – type locality for species[3]
- †Eoglyptosaurus
- †Eoglyptosaurus donohoei – type locality for species
- Eohiodon
- †Eohippus
- †Eoictops – type locality for genus
- †Eoictops novaceki – type locality for species
- †Eoliarus – tentative report
- †Eoliarus lutensis – type locality for species
- †Eomoropus
- †Eopodagrion – type locality for genus
- †Eopodagrion abortivum – type locality for species
- †Eopodagrion scudderi – type locality for species
- †Eorhinophrynus
- †Eorhinophrynus septentrionalis – type locality for species
- †Eoryctes – type locality for genus
- †Eoryctes melanus – type locality for species
- †Eostangeria
- †Eostrix
- †Eostrix martinellii – type locality for species
- †Eotitanops
- †Eotylopus
- †Eotylopus reedi – type locality for species
- †Eozygodactylus – type locality for genus
- †Eozygodactylus americanus – type locality for species
- †Epicaerus
- †Epicaerus dilapsus – type locality for species
- †Epicaerus effossus – type locality for species
- †Epicaerus exanimis – type locality for species
- †Epicaerus fodinarum
- †Epicaerus saxatilis – type locality for species
- †Epicaerus subterraneus
- †Epicaerus terrosus – type locality for species
- †Epihippus
- †Epitriplopus
- †Epoicotherium
- †Equisetum
- Equus
- Eremophila
- Erythrina
- †Erythrina roanensis – type locality for species
- Esox
- †Esox kronneri – type locality for species
- †Esthonyx
- †Eucastor
- †Eucommia
- †Eudaemonema
- Eugenia
- †Eugnamptus
- †Eugnamptus decemsatus – type locality for species
- †Eugnamptus grandaevus
- †Euhapsis
- †Eumys
- †Euparius
- †Euparius elusus – type locality for species
- †Euparius repertus – type locality for species
- Euphagus
- †Euproteaciphyllum
- †Eusmilus
- Eutamias
- †Eutypomys
- †Exostinus
- †Exostinus lancensis – or unidentified comparable form
F
[edit]- Fagus
- Falco
- †Falco columbarius
- †Falco falconella – type locality for species
- †Falco mexicanus
- †Falco rusticolus
- †Falco sparverius
- †Ficarasites – type locality for genus
- †Ficarasites stigmaticum – type locality for species
- Ficus
- †Ficus affinis
- †Ficus artocarpoides
- †Ficus asiminaefolia
- †Ficus deformata
- †Ficus densifolia
- †Ficus haguei
- †Ficus planicostata
- †Ficus shastensis – tentative report
- †Ficus subtruncata
- †Ficus tiliaefolia – tentative report
- †Ficus ungeri
- †Firmianites – type locality for genus
- †Firmianites aterrimus – type locality for species
- †Florentiamys
- †Florentiamys kinseyi – type locality for species
- †Florentiamys loomisi – type locality for species
- †Fluvioviridavis – type locality for genus
- †Fluvioviridavis platyrhamphus – type locality for species
- †Foekenia
- †Fortuna
- †Fortuna marsilioides – or unidentified comparable form
- †Franimys
- †Franimys ambos
- †Franimys amherstensis – type locality for species
- †Franimys buccatus
- †Fraxinoipollenis
- †Fraxinoipollenites
- †Fraxinopollenites
- †Fraxinus
- †Fulgora
- †Fulgora granulosa – type locality for species
- †Fulgora populata – type locality for species
G
[edit]- †Gagadon
- †Galbreathia
- †Galecyon
- Galerita
- †Galerita marshii – type locality for species
- †Gallinuloides – type locality for genus
- †Gallinuloides wyomingensis – type locality for species
- Gastrocopta
- Gastrodonta
- †Gaultia – type locality for genus
- †Gaultia silvaticus – type locality for species
- †Gazinius
- †Gazinius amplus
- †Gazinius bowni – type locality for species
- †Gazinocyon
- †Gelastops
- †Gelastops joni – type locality for species
- †Gelastops parcus
- †Geranoides – type locality for genus
- †Geranoides jepseni – type locality for species
- †Geringophis
- Gerrhonotus – or unidentified comparable form
- Ginkgo
- †Gleditsia – or unidentified related form
- †Gleditsia RR29 informal
- †Gleicheniidites
- †Glypta
- †Glypta transversalis – type locality for species
- †Glyptosaurus – type locality for genus
- †Glyptosaurus agmodon – type locality for species
- †Glyptosaurus obtusidens – type locality for species
- †Glyptosaurus rhodinos – type locality for species
- †Glyptosaurus sphenodon – type locality for species
- †Glyptosaurus sylvestris – type locality for species
- Glyptostrobus
- †Goinophis – tentative report
- †Gomphochelys – type locality for genus
- †Gomphochelys nanus – type locality for species
- †Goniacodon
- †Goniacodon levisanus – type locality for species
- †Goniodontomys
- Gopherus
- †Gracilocyon
- †Grangerella
- †Gregorymys
- †Gregorymys formosus
- †Gregorymys riggsi – type locality for species
- †Grewiopsis – tentative report
- †Griphomys
- Grus
- †Grus canadensis
- †Grus marshi – type locality for species
- Gulo
- †Gymnetron
- †Gymnetron lecontei – type locality for species
- †Gymnocladus
- Gyraulus – or unidentified comparable form
H
[edit]- †Habrosaurus
- †Hadrianus
- †Hadrianus allabiatus – type locality for species
- †Hadrianus quadratus – type locality for species
- †Hammapteryx – type locality for genus
- †Hammapteryx reticulata – type locality for species
- †Hapalodectes
- †Hapalorestes
- †Hapalorestes lovei – type locality for species
- †Haplaletes
- †Haplaletes disceptatrix
- †Haplaletes pelicatus – type locality for species
- †Haploconus
- †Haplodontosaurus
- †Haplolambda
- †Haplomylus
- †Haplomylus bozemanensis – type locality for species
- †Haplomylus palustris
- †Haplomylus scottianus – type locality for species
- †Haplomylus simpsoni
- †Haplomylus speirianus
- †Haplomylus zalmouti
- †Harpagolestes
- †Harpagolestes macrocephalus – type locality for species
- †Harpalodon
- †Harpalodon sylvestris – or unidentified comparable form
- †Harrymys
- †Helaletes – type locality for genus
- †Helaletes nanus – type locality for species
- †Heliscomys
- †Heliscomys hatcheri
- †Heliscomys mcgrewi
- †Heliscomys ostranderi
- †Heliscomys vetus – or unidentified comparable form
- †Helix
- †Helodermoides
- †Helohyus
- †Helohyus lentus
- †Helohyus milleri – type locality for species
- †Helohyus plicodon – type locality for species
- †Hemiacodon
- †Hemiacodon casamissus – type locality for species
- †Hemiacodon engardae – type locality for species
- †Hemiacodon gracilis
- †Hemiauchenia
- †Hemipsalodon
- Hemitelia
- †Hemithlaeus
- †Hendryomeryx
- †Heptacodon
- †Heptodon
- †Herpetotherium
- †Herpetotherium innominatum – type locality for species
- †Herpetotherium knighti
- †Herpetotherium youngi – or unidentified comparable form
- †Hesperocyon
- †Hesperopetes
- †Hesperopetes thoringtoni – type locality for species
- †Hesperosorex
- †Hesperosorex lovei – type locality for species
- †Heteraletes
- †Hexacodus
- †Hicoria
- Hirundo – or unidentified comparable form
- †Holospira
- †Homacodon
- †Homacodon vagans – type locality for species
- †Homalota
- †Homalota recisa – type locality for species
- †Homogalax
- †Honrovits – type locality for genus
- †Honrovits tsuwape – type locality for species
- †Hoplophoneus
- †Hovenia
- †Hovenia oregonensis – or unidentified comparable form
- †Huerfanodon
- †Huerfanodon polecatensis – type locality for species
- †Hummelichelys
- †Hummelichelys annae – type locality for species
- †Hummelichelys ellipticus
- †Hummelichelys grangeri – type locality for species
- †Hummelichelys guttatus – type locality for species
- †Hutchemys
- †Hyaenodon
- Hydrangea
- †Hydrangea antica
- †Hydrangea GR537 informal
- Hydrobia – report made of unidentified related form or using admittedly obsolete nomenclature
- Hydrobius
- †Hydrobius confixus – type locality for species
- †Hydrobius decineratus – type locality for species
- †Hydrochus
- †Hydrochus relictus – type locality for species
- †Hydromystria
- †Hylobius
- †Hylobius packardii – type locality for species
- †Hylobius provectus – type locality for species
- †Hyopsodus
- †Hyopsodus aemulor
- †Hyopsodus latidens
- †Hyopsodus lepidus – type locality for species
- †Hyopsodus loomisi
- †Hyopsodus lysitensis
- †Hyopsodus mentalis
- †Hyopsodus minor
- †Hyopsodus minusculus – type locality for species
- †Hyopsodus miticulus
- †Hyopsodus paulus – type locality for species
- †Hyopsodus pauxillus – type locality for species
- †Hyopsodus powellianus
- †Hyopsodus simplex
- †Hyopsodus tonksi – type locality for species
- †Hyopsodus uintensis
- †Hyopsodus walcottianus
- †Hyopsodus wortmani
- †Hypertragulus
- †Hypisodus
- †Hypohippus
- †Hypolagus
- †Hypolagus parviplicatus – or unidentified comparable form
- †Hyporhina
- †Hypsiops
- †Hyrachyus
- †Hyrachyus eximius
- †Hyrachyus modestus – type locality for species
- †Hyracodon
- †Hyracotherium
I
[edit]- †Icaronycteris – type locality for genus
- †Icaronycteris index – type locality for species
- †Ignacius
- †Ignacius clarkforkensis – type locality for species
- †Ignacius fremontensis
- †Ignacius frugivorus
- †Ignacius graybullianus
- †Iguanavus – type locality for genus
- †Iguanavus exilis – type locality for species
- †Indusia
- †Indusia calculosa – type locality for species
- †Insulapollenites
- †Intyrictis
- †Iridodon – type locality for genus
- †Iridodon datzae – type locality for species
- †Ischyromys
- †Isectolophus
- †Isectolophus latidens
- †Isectolophus radinskyi – type locality for species
- †Isoetites
- †Iulus
- †Iulus telluster – type locality for species
J
[edit]- †Jepsenella
- †Jepsibaena
- †Jepsibaena minor – type locality for species
- †Joffrea
- †Joffrea BB20 informal
- †Joffrea FW50 informal
- †Judithemys
- †Judithemys backmani – or unidentified comparable form
- †Juglandicarya
- †Juglandiphyllites
- Juglans
- †Juncitarsus – type locality for genus
- †Juncitarsus gracillimus – type locality for species
- Junco – or unidentified comparable form
- †Junglandaceae
K
[edit]- †Kalmia
- †Kalobatippus
- †Knightia
- †Knightomys
- Koelreuteria
- †Koniaryctes
- †Koniaryctes paulus – type locality for species
- †Kydia – or unidentified related form
- †Kydia FW61 informal
L
[edit]- †Labidolemur
- †Labidolemur kayi
- †Labidolemur major – type locality for species
- †Labidolemur serus
- †Labidolemur soricoides
- Laccobius
- †Laccobius elongatus – type locality for species
- †Laevigatosporites
- †Lagopus
- †Lagopus leucurus – or unidentified comparable form
- †Lambdotherium
- †Lambertocyon
- †Lambertocyon eximius
- †Lambertocyon gingerichi – type locality for species
- Lanius
- Larus – or unidentified comparable form
- †Lastrea
- Lathrobium
- †Lathrobium abscessum – type locality for species
- †Laurinoxylon
- †Laurophyllum
- Laurus
- †Laurus californica
- †Laurus grandis
- †Laurus montana
- †Laurus perdita
- †Laurus primigenia – tentative report
- †Laurus princeps
- †Laurus socialis
- †Leguminosites
- †Leguminosites coloradensis
- †Leguminosites lamarensis
- †Leguminosites lesquereuxiana
- †Leguminosites regularis – type locality for species
- Leiocephalus
- †Leipsanolestes
- Lepisosteus
- †Lepisosteus glaber – or unidentified comparable form
- †Lepisosteus occidentalis
- †Leptacodon
- †Leptacodon donkroni
- †Leptacodon munusculum
- †Leptacodon packi – type locality for species
- †Leptacodon tener
- †Leptarctus – or unidentified comparable form
- †Leptauchenia
- †Leptictis
- †Leptocyon
- †Leptolambda
- †Leptomeryx
- †Leptomeryx esulcatus
- †Leptomeryx evansi
- †Leptomeryx mammifer
- †Leptomeryx semicinctus
- †Leptomeryx speciosus
- †Leptomeryx yoderi – type locality for species
- †Leptoreodon
- †Leptotomus
- †Leptotomus guildayi
- †Leptotomus parvus – type locality for species
- †Leptotragulus
- †Leptotragulus clarki – or unidentified comparable form
- †Leptotragulus medius
- †Leptotragulus ultimus
- Lepus
- Lepyrus – tentative report
- †Lepyrus evictus – type locality for species
- †Lestophis
- †Lestophis anceps – type locality for species
- †Lestophis crassus – type locality for species
- †Leucosticte
- †Limaconyssus – type locality for genus
- †Limaconyssus habrus – type locality for species
- †Limalophus
- †Limalophus compositus
- †Limalophus contractus – type locality for species
- †Limnocyon
- †Limnocyon cuspidens – type locality for species
- †Limnocyon medius
- †Limnocyon potens – type locality for species
- †Limnocyon velox – type locality for species
- †Limnocyon verus – type locality for species
- †Limnoecus
- †Limnofregata – type locality for genus
- †Limnofregata azygosternon – type locality for species
- †Limnofregata hutchisoni – type locality for species
- Lindera
- †Lindera obtusata
- †Lindera varifolia – type locality for species
- †Lisserpeton
- †Listronotus
- †Listronotus muratus – type locality for species
- †Litaletes
- †Lithexorista – type locality for genus
- †Lithexorista scudderi – type locality for species
- †Lithohypoderma
- †Lithohypoderma ascarides - type locality for species
- †Lithophis – type locality for genus
- †Lithophis sargenti – type locality for species
- †Lithophysa – type locality for genus
- †Lithophysa tumulta – type locality for species
- †Lithopsis – type locality for genus
- †Lithopsis elongata – type locality for species
- †Lithopsis fimbriata – type locality for species
- †Lithornis
- †Lithornis plebius – type locality for species
- †Lithornis promiscuus – type locality for species
- †Lithotorus – type locality for genus
- †Lithotorus cressoni – type locality for species
- †Litocherus
- †Litocherus lacunatus – type locality for species
- †Litocherus notissimus
- †Litocherus zygeus – type locality for species
- †Litolagus
- †Litolestes
- †Litolestes ignotus – type locality for species
- †Litomylus
- †Litomylus dissentaneus – type locality for species
- †Litomylus ishami – type locality for species
- †Litomylus scaphicus – type locality for species
- †Litoyoderimys
- †Lophiotherium
- †Lophiotherium vasacciensis – type locality for species
- †Lophiparamys
- †Lophocion[4]
- †Lophocion grangeri – type locality for species[4]
- †Loveina – type locality for genus
- †Loveina minuta
- †Loveina sheai
- †Loveina wapitiensis
- †Loveina zephyri – type locality for species
- †Loxolophus
- †Loxolophus criswelli
- †Loxolophus faulkneri – type locality for species
- †Loxolophus hyattianus – or unidentified comparable form
- †Loxolophus priscus
- †Lucashyus – type locality for genus
- †Lucashyus coombsae – type locality for species
- †Lyctocoris – tentative report
- †Lyctocoris terreus – type locality for species
- Lygodium
- Lynx
- †Lynx lynx – tentative report
- †Lystra – tentative report
- †Lystra leei – type locality for species
- †Lystra richardsoni – type locality for species
M
[edit]- †Maceopolipollenites
- †Macginitiea
- †Machaeroides
- †Machaeroides eothen
- †Machaeroides simpsoni – type locality for species
- †Machaerosaurus
- Macrocranion
- †Macrocranion junnei – type locality for species
- †Macrocranion nitens
- †Macrocranion robinsoni
- †Macrotarsius
- †Macrotarsius siegerti – type locality for species
- Magnolia
- †Maiorana
- †Maiorana ferrisensis – type locality for species
- †Maiorana noctiluca
- †Malapoenna
- †Malaquiferus
- †Malaquiferus tourteloti – type locality for species
- †Malfelis – type locality for genus
- †Malfelis badwaterensis – type locality for species
- †Mammacyon
- †Mammacyon ferocior – type locality for species
- †Mammuthus
- Marmota
- †Marsholestes
- †Marsholestes dasypelix – type locality for species
- †Mattimys
- †Megacerops
- †Megacerops osborni – type locality for species
- †Megadelphus
- †Megalagus
- †Megalesthonyx
- †Megalictis
- †Melanosaurus – type locality for genus
- †Melanosaurus maximus – type locality for species
- †Melastomites
- †Meliakrouniomys
- †Meliosma
- †Meniscotherium
- †Menisperimites
- †Menispermites
- †Menispermites limacioides – type locality for species
- †Menispermites parvareolatus
- †Menoceras
- †Menops
- †Menops heloceras
- †Menops marshi – or unidentified comparable form
- †Mentoclaenodon
- †Mentoclaenodon acrogenius – type locality for species
- Mergus
- †Merychippus
- †Merychippus coloradense
- †Merychippus insignis – or unidentified comparable form
- †Merychippus primus
- †Merychyus
- †Merychyus arenarum
- †Merychyus crabilli
- †Merychyus elegans – or unidentified comparable form
- †Merychyus minimus
- †Merycobunodon – tentative report
- †Merycobunodon walshi – type locality for species
- †Merycochoerus
- †Merycodus
- †Merycodus sabulonis – or unidentified comparable form
- †Merycodus warreni – or unidentified comparable form
- †Merycoides
- †Merycoidodon
- †Merycoidodon culbertsoni – type locality for species
- †Merycoidodon major
- †Merycoidodon presidioensis – or unidentified comparable form
- †Mesatirhinus
- †Mesocyon – report made of unidentified related form or using admittedly obsolete nomenclature
- †Mesodma
- †Mesodma ambigua – type locality for species
- †Mesodma formosa
- †Mesodma garfieldensis – or unidentified comparable form
- †Mesodma hensleighi
- †Mesodma pygmaea
- †Mesohippus
- †Mesohippus bairdi
- †Mesohippus westoni – or unidentified comparable form
- †Mesomeryx – or unidentified comparable form
- †Mesonyx
- †Mesonyx obtusidens – type locality for species
- †Mesoreodon
- †Mesoreodon chelonyx
- †Mesoreodon minor – type locality for species
- †Mesoscalops
- †Metacheiromys
- †Metacheiromys dasypus – type locality for species
- †Metacheiromys marshi – type locality for species
- †Metadjidaumo
- †Metadjidaumo hendryi – type locality for species
- †Metamynodon
- †Metamynodon planifrons – or unidentified comparable form
- †Metanoiamys
- †Metarhinus
- Metasequoia
- †Metatomarctus
- †Miacis
- †Miacis deutschi
- †Miacis exiguus
- †Miacis latidens
- †Miacis medius
- †Miacis parvivorus – type locality for species
- †Miacis petilus
- †Miacis vorax
- †Michenia
- Micrasema – tentative report
- †Micrasema tessellatum – type locality for species
- †Microclaenodon
- †Microcosmodon
- †Microcosmodon conus – type locality for species
- †Microcosmodon rosei – type locality for species
- †Micromomys
- †Micromomys antelucanus
- †Micromomys silvercouleei – type locality for species
- †Microparamys
- Microphysula – or unidentified comparable form
- †Micropternodus
- †Microsus
- †Microsus cuspidatus – type locality for species
- †Microsyops
- †Microsyops angustidens – type locality for species
- †Microsyops annectens
- †Microsyops cardiorestes
- †Microsyops elegans – type locality for species
- †Microsyops knightensis
- †Microsyops latidens
- †Microsyops scottianus
- Microtus
- Mictomys
- †Mimatuta
- †Mimatuta makpialutae
- †Mimatuta minuial – type locality for species
- †Mimetodon
- †Mimetodon churchilli – type locality for species
- †Mimetodon silberlingi
- †Mimoperadectes
- †Mimoperadectes houdei – type locality for species
- †Mimoperadectes labrus – type locality for species
- †Mimosites
- †Mimotricentes
- †Mimotricentes fremontensis – type locality for species
- †Miniochoerus
- †Miniochoerus affinis – type locality for species
- †Miniochoerus chadronensis – type locality for species
- †Miniochoerus forsythae
- †Miniochoerus gracilis
- †Minippus
- †Mioclaenus
- †Mioclaenus opisthacus – or unidentified comparable form
- †Mioclaenus turgidus
- †Miocyon
- †Miocyon major – or unidentified comparable form
- †Mioheteromys
- †Miohippus
- †Miolabis
- †Miomustela
- †Mioplosus
- †Miospermophilus
- †Miotapirus
- †Miotapirus harrisonensis – type locality for species
- †Miotylopus
- †Miotylopus gibbi
- †Miotylopus leonardi
- †Miotylopus taylori – type locality for species
- †Miracinonyx
- †Mithrandir
- †Mitostylus
- †Mitostylus seculorum – type locality for species
- †Mixodectes
- Mnemosyne
- †Mnemosyne terrentula – type locality for species
- †Mojavemys
- †Monosaulax
- †Monosaulax curtus – or unidentified comparable form
- †Moropus
- Morus
- †Musophyllum
- Mustela
- Mycetobia – tentative report
- †Mycetobia terricola – type locality for species
- †Mylanodon – type locality for genus
- †Mylanodon rosei – type locality for species
- Myrica
- †Myrmecoboides
- Myrmica
- †Myrtophyllum
- †Mysops
- †Mysops fraternus
- †Mysops minimus – type locality for species
- †Mysops parvus – type locality for species
- †Mytonolagus
- †Mytonolagus petersoni
- †Mytonolagus wyomingensis – type locality for species
- †Mytonomys
N
[edit]- †Namatomys
- †Namatomys erythrus – type locality for species
- †Namatomys lloydi
- †Nannodectes
- †Nannodectes gazini – type locality for species
- †Nannodectes gidleyi
- †Nannodectes intermedius – type locality for species
- †Nannodectes simpsoni – type locality for species
- †Nanodelphys
- †Nanomomys
- †Nanotragulus
- †Nanotragulus loomisi – type locality for species
- †Nanotragulus ordinatus
- †Naocephalus – type locality for genus
- †Naocephalus porrectus – type locality for species
- †Navajovius
- †Neanis
- †Necrocydnus
- †Necrocydnus gosiutensis – type locality for species
- †Necygonus – type locality for genus
- †Necygonus rotundatus – type locality for species
- †Nelumbago
- †Nelumbo
- †Neocathartes
- †Neodiacodexis
- †Neoliotomus
- Neophrontops
- †Neoplagiaulax
- †Neoplagiaulax grangeri – tentative report
- †Neoplagiaulax hunteri
- †Neoplagiaulax jepi – type locality for species
- †Neoplagiaulax mckennai – type locality for species
- †Neoplagiaulax nelsoni
- †Neothanes
- †Neothanes testeus – type locality for species
- Neotoma
- †Neovulpavus
- †Nexuotapirus
- †Niglarodon
- †Niptomomys
- †Niptomomys doreenae
- †Niptomomys favorum – type locality for species
- †Niptomomys thelmae
- †Nonomys
- †Nordenskioldia
- †Nosodendron
- †Nosodendron tritavum – type locality for species
- †Notharctus
- †Notharctus robinsoni – type locality for species
- †Notharctus robustior
- †Notharctus tenebrosus – type locality for species
- †Notharctus venticolus
- †Notogoneus
- †Notomorpha – type locality for genus
- †Notomorpha garmanii – type locality for species
- †Notomorpha gravis – type locality for species
- †Notomorpha testudinea – type locality for species
- †Notoparamys – tentative report
- †Notoparamys blochi – type locality for species
- †Nototamias – or unidentified comparable form
- †Nucifraga
- Numenius
- †Nyctea
- †Nyctitherium
- †Nyctitherium christopheri
- †Nyctitherium gunnelli – type locality for species
- †Nyctitherium serotinum – type locality for species
- †Nyctitherium velox
- †Nyssa
O
[edit]- Ochotona
- Ocotea
- †Ocotea coloradensis
- †Ocotea FW03 informal
- †Odaxosaurus
- †Odaxosaurus jepseni – or unidentified comparable form
- †Odaxosaurus piger
- †Ogmophis
- †Ogmophis microcompactus – or unidentified comparable form
- †Ogmophis voorhiesi
- †Oligodontosaurus – type locality for genus
- †Oligodontosaurus wyomingensis – type locality for species
- †Oligoryctes
- †Oligoscalops – tentative report
- †Oligospermophilus
- †Oligotheriomys
- †Oliveremys
- †Oliveremys uintaensis – type locality for species
- †Omalodiscus
- †Omomys
- Ondatra
- †Onoclea
- †Onychonycteris – type locality for genus
- †Onychonycteris finneyi – type locality for species
- †Oodectes
- †Oodectes herpestoides – type locality for species
- †Oodectes jepseni
- Ophryastes
- †Ophryastes compactus – type locality for species
- †Opisthotriton
- Oreamnos
- †Oreoconus
- †Oreodontoides
- Oreohelix
- †Oreolagus
- †Oreopanax
- †Ormiscus
- †Ormiscus partitus – type locality for species
- †Orohippus
- †Orohippus major – type locality for species
- †Orohippus proteros
- †Orohippus pumilus – type locality for species
- †Orohippus sylvaticus
- †Orthogenysuchus – type locality for genus
- †Orthogenysuchus olseni – type locality for species
- †Osbornodon
- †Osbornodon brachypus – type locality for species
- †Osmanthus
- †Osmunda
- †Osmundacidites
- †Otarocyon
- †Otiorhynchites
- †Otiorhynchites fossilis – type locality for species
- †Otiorhynchites tysoni
- †Otiorhynchus
- †Otiorhynchus dubius – type locality for species
- †Otiorhynchus perditus – type locality for species
- †Ototriton – type locality for genus
- †Ototriton solidus – type locality for species
- †Ourayia
- Ovis
- †Oxyacodon
- †Oxyaena
- †Oxyclaenus
- †Oxydactylus
- †Oxydactylus longipes – or unidentified comparable form
- †Oxydactylus lulli – type locality for species
- †Oxydactylus wyomingensis
- †Oxyprimus
- †Oxyprimus galadrielae – type locality for species
- †Oxyprimus putorius
P
[edit]- †Pachyaena
- Pachycondyla
- †Pachycondyla labandeirai – type locality for species
- †Pachylobius
- †Palaeanodon
- †Palaeanodon ignavus
- †Palaeanodon Ignavus
- †Palaeanodon nievelti
- †Palaeanodon parvulus – tentative report
- †Palaearctonyx
- †Palaearctonyx meadi – type locality for species
- †Palaechthon
- †Palaechthon alticuspis – or unidentified comparable form
- †Palaechthon woodi
- †Palaeictops
- †Palaeocarpinus
- †Palaeocarya
- †Palaeogale
- †Palaeolagus
- †Palaeolagus burkei
- †Palaeolagus haydeni
- †Palaeolagus hypsodus – type locality for species
- †Palaeolagus intermedius
- †Palaeolagus philoi
- †Palaeolagus primus – type locality for species
- †Palaeolagus temnodon
- †Palaeonictis
- †Palaeonictis occidentalis
- †Palaeonictis peloria – type locality for species
- †Palaeonictis wingi – type locality for species
- †Palaeophasianus – type locality for genus
- †Palaeophasianus meleagroides – type locality for species
- †Palaeorallus – type locality for genus
- †Palaeorallus troxelli – type locality for species
- †Palaeoryctes
- †Palaeoryctes cruoris – type locality for species
- †Palaeoryctes puercensis
- †Palaeoryctes punctatus
- †Palaeosinomenium – or unidentified comparable form
- †Palaeosinopa
- †Palaeosinopa didelphoides
- †Palaeosinopa dorri – type locality for species
- †Palaeosinopa incerta – type locality for species
- †Palaeosinopa lacus – type locality for species
- †Palaeosinopa lutreola
- †Palaeosinopa veterrima
- †Palaeosyops
- †Palaeosyops fontinalis
- †Palaeosyops paludosus – type locality for species
- †Palaeosyops robustus – type locality for species
- †Palaeotheca
- †Palaeotheca terrestris – type locality for species
- †Palaeoxantusia – type locality for genus
- †Palaeoxantusia amara – type locality for species
- †Palaeoxantusia fera – type locality for species
- †Palatobaena – type locality for genus
- †Palatobaena bairdi – type locality for species
- †Palatobaena gaffneyi – type locality for species
- †Palecphora
- †Palecphora patefacta – type locality for species
- †Palenochtha
- †Palenochtha minor
- †Palenochtha weissae – type locality for species
- †Paleoamphiuma – type locality for genus
- †Paleoamphiuma tetradactylum – type locality for species
- †Paleomyrtinaea
- †Paleomyrtinaea FW66 informal
- †Paleonelumbo
- †Paleonuphar
- †Paleotomus
- †Paleotomus carbonensis – type locality for species
- †Paleotomus milleri – type locality for species
- †Paleotomus radagasti
- †Palepidophyma – type locality for genus
- †Palepidophyma lilliputiana – type locality for species
- †Palepidophyma paradisa – type locality for species
- Paliurus
- †Palmocarpon
- †Pandaniidites
- Panthera
- †Pantolambda
- †Pantolambda cavirictus
- †Pantolambda intermedius – or unidentified comparable form
- †Pantolestes
- †Pantolestes longieundus – type locality for species
- †Pantolestes natans – or unidentified comparable form
- †Paracathartes
- †Paracosoryx
- †Paracynarctus
- †Paradjidaumo
- †Paraenhydrocyon
- †Paraepicrates
- †Paraepicrates brevispondylus – type locality for species
- †Paraglyptosaurus
- †Paraglyptosaurus princeps – type locality for species
- †Parahippus
- †Parahippus pawniensis
- †Parahippus pristinus – tentative report
- †Parahippus wyomingensis – type locality for species
- †Paralatindia
- †Paralatindia saussurei – type locality for species
- †Paramerychyus
- †Paramys
- †Paramys adamus – type locality for species
- †Paramys compressidens
- †Paramys copei
- †Paramys delicatior
- †Paramys delicatus
- †Paramys excavatus
- †Paramys leptodus
- †Paramys pycnus
- †Paramys relictus
- †Paramys taurus
- †Parandrita
- †Parandrita vestita – type locality for species
- †Paranolis – type locality for genus
- †Paranolis delicatus – type locality for species
- †Paranymphaea
- †Paranymphea
- †Parapliosaccomys
- †Paraprionosaurus – type locality for genus
- †Paraprionosaurus wyomingensis – type locality for species
- †Parapternodus
- †Parapternodus antiquus – type locality for species
- †Pararyctes
- †Pararyctes pattersoni – type locality for species
- †Parasauromalus – type locality for genus
- †Parasauromalus olseni – type locality for species
- †Paraternstroemia
- †Paratomarctus
- †Paratylopus
- †Parectypodus
- †Pareumys
- †Parictis
- †Paromomys
- †Parophisaurus
- †Parvericius
- †Parvileguminophyllum
- †Parvitragulus
- †Patriofelis
- †Patriofelis ferox – type locality for species
- †Patriofelis ulta
- †Patriomanis
- †Pauromys
- †Pauromys schaubi – type locality for species
- †Peltosaurus
- †Pelycodus
- †Pelycomys
- †Penetrigonias
- †Penosphyllum
- †Pentacemylus – tentative report
- †Pentacodon
- †Pentacosmodon
- †Pentacosmodon pronus – type locality for species
- †Peradectes
- †Peradectes californicus
- †Peradectes chesteri
- †Peradectes elegans – type locality for species
- †Peradectes protinnaminatus
- †Peradectes protinnominatus
- †Peratherium
- †Perchoerus
- †Periptychus
- Perognathus
- Peromyscus
- Persea
- †Persea brossiana
- †Persea coriacea – type locality for species
- †Persea pseudocarolinensis
- †Perseoxylon
- †Persites
- †Petauristodon
- †Phalaenoptilus
- †Phareodus
- †Phenacocoelus
- †Phenacodaptes
- †Phenacodaptes sabulosus – type locality for species
- †Phenacodontid
- †Phenacodus
- †Phenacodus bisonensis – type locality for species
- †Phenacodus grangeri
- †Phenacodus intermedius
- †Phenacodus magnus
- †Phenacodus matthewi
- †Phenacodus trilobatus
- †Phenacodus vortmani
- †Phenacolemur
- †Phenacolemur fortior – type locality for species
- †Phenacolemur mcgrewi – type locality for species
- †Phenacolemur praecox
- †Phenacolemur shifrae
- †Phenacolemur simonsi
- Phenacomys
- †Phenolia
- †Phenolia incapax – type locality for species
- Philhydrus
- †Philodendron – or unidentified related form
- †Philodendron RR61 informal
- †Philotrox
- †Phlaocyon
- †Phoebe
- Phragmites – tentative report
- †Phyllites
- Phyllobius
- Physa
- Phytocrene
- Pica
- †Piceoerpeton – type locality for genus
- †Piceoerpeton willwoodense – type locality for species
- †Picrodus
- †Picromomys
- †Picromomys petersonorum – type locality for species
- Pinus
- †Pipestoneomys
- †Pipestoneomys bisulcatus – or unidentified comparable form
- Pipilo
- †Plagioctenodon
- †Plagioctenodon krausae
- †Plagioctenodon rosei
- †Plagioctenodon savagei
- †Plagioctenodon thewisseni – type locality for species
- †Plagioctenoides
- †Plagiomene
- †Planatus
- †Planera
- †Planetetherium
- †Planetochelys
- †Planorbina
- †Plastomenoides
- †Plastomenus
- †Plastomenus molopinus
- †Plastomenus oedemius – type locality for species
- †Plastomenus tantillus – type locality for species
- †Plastomenus thomasi
- †Plastomenus visendus – type locality for species
- †Plataninium
- †Platanophyllum
- Platanus
- Platycarya
- Platynus
- †Platynus caesus – type locality for species
- †Platynus senex – type locality for species
- Plecia
- †Plecia dejecta – type locality for species
- †Plecia pealei – type locality for species
- †Plesiadapis
- †Plesiadapis anceps – type locality for species
- †Plesiadapis churchilli
- †Plesiadapis cookei
- †Plesiadapis dubius
- †Plesiadapis fodinatus – type locality for species
- †Plesiadapis gingerichi
- †Plesiadapis praecursor
- †Plesiadapis rex
- †Plesiadapis simonsi – type locality for species
- †Plesiolestes
- †Plesiolestes problematicus – type locality for species
- †Pliophenacomys
- †Poabromylus
- †Poebrodon
- †Poebrotherium
- †Poliomyia – type locality for genus
- †Poliomyia recta – type locality for species
- †Pollyosbornia
- †Pollyosbornia altidens – or unidentified comparable form
- Polygyra
- †Pontifactor
- †Pontifactor bestiola – type locality for species