• Thumbnail for Ptychodus
    cartilage. The very first remains of Ptychodus were found in England and Germany in the first half of the 18th century. Ptychodus teeth have long been identified...
    14 KB (1,417 words) - 16:00, 30 October 2024
  • Thumbnail for Western Interior Seaway
    sharks such as Squalicorax, Cretoxyrhina, and the giant shellfish-eating Ptychodus mortoni (believed to be 10 metres (33 ft) long); and advanced bony fish...
    16 KB (1,772 words) - 05:55, 25 October 2024
  • Thumbnail for Lamniformes
    †Serratolamna Family †Ptychodontidae (extinct, Cretaceous period) Genus †Ptychodus (16+ species) Below is a cladogram showing relationships within Lamniformes...
    36 KB (1,839 words) - 09:39, 24 October 2024
  • Thumbnail for Kuybyshev Reservoir
    reservoir by an embankment. [citation needed] In 1926, a fossilized tooth of Ptychodus latissimus paucisulcata was found in redeposited sediments of Tunguz sand...
    5 KB (383 words) - 11:20, 24 October 2024
  • Thumbnail for List of prehistoric cartilaginous fish genera
    Glikman, 1980 †Ptychodus Agassiz, 1839 †Ptychodus acutus Agassiz, 1843 †Ptychodus agassizi Dixon, 1850 †Ptychodus altior Agassiz, 1843 †Ptychodus anonymus Williston...
    263 KB (17,293 words) - 02:21, 17 September 2024
  • Thumbnail for Mangystau Region
    dolichosaurian thoracic vertebra and teeth of chondrichthyians: hybodontiform Ptychodus and lamniform Protolamna, Cretolamna, Cretoxyrhina and Hispidaspis. These...
    18 KB (1,330 words) - 17:06, 8 September 2024
  • describe new fossil material of Ptychodus from the Upper Cretaceous strata in Mexico, providing evidence that Ptychodus was a high-speed mackerel shark...
    138 KB (9,159 words) - 23:31, 25 October 2024
  • unique dentition, combining Squalicorax-like, cutting anterior teeth with Ptychodus-like, crushing posterior teeth. Glickman, L.S. (1980). Evolyutsiya melovykh...
    4 KB (229 words) - 13:29, 2 January 2024
  • the plesiosaur Mauriciosaurus, the mosasaur Yaguarasaurus and sharks Ptychodus and Aquilolamna. Earth sciences portal Mexico portal Paleontology portal...
    3 KB (188 words) - 23:57, 27 September 2024
  • Thumbnail for Nyctosaurus
    the dorsal finned Bananogmius, and the cartilaginous fishes Cretolamna, Ptychodus, Rhinobatos and Squalicorax were also found within the formation. Several...
    26 KB (2,724 words) - 05:08, 20 August 2024
  • Thumbnail for Protosphyraena
    tenuis †P. terminalis Synonyms Australopachycormus? Ptychodus arcuatus Ptychodus gibberulus Ptychodus spectabilis Saurocephalus striatus Protosphyraena...
    10 KB (1,005 words) - 15:34, 30 October 2024
  • (2013-04-01). "Facies related phylostratigraphy of the benthic neoselachian Ptychodus from the Late Cretaceous (Cenomanian/Turonian) of the Pre-North Sea Basin...
    13 KB (695 words) - 21:35, 11 September 2024
  • Cenomanian-Campanian Kansas Chondrichthyes Odontaspis Cretaceous Delaware Chondrichthyes Ptychodus Albian-Maastrichtian Kansas Chondrichthyes Scapanorhynchus Cretaceous-Miocene...
    3 KB (152 words) - 16:09, 23 March 2023
  • examination of the dental enameloid of the Cretaceous durophagous shark Ptychodus supports neoselachian classification". Journal of Paleontology. 90 (4):...
    120 KB (6,285 words) - 20:38, 31 October 2024
  • Haimirichia H. amonensis Agoult Partial skeleton A haimirichiid mackerel shark. Ptychodus P. maghrebianus Goulmima Dental battery, isolated teeth A ptychodontid...
    35 KB (2,107 words) - 21:57, 17 October 2024
  • Thumbnail for Ferron Formation
    part of the Ferron Sandstone include: Hybodus sp., Ptychodus cf. P. mammillaris Agassiz, 1843, Ptychodus whipplei Marcou, 1858, cf. Chiloscyllium sp., Scapanorhynchus...
    6 KB (647 words) - 18:13, 9 April 2024
  • Thumbnail for Tropic Shale
    megatooth shark. Cretoxyrhina C. mantelli 7 teeth. A mackerel shark. Ptychodus P. anonymus 16 teeth. A ptychodontid. P. decurrens Vertebrae & hundreds...
    20 KB (1,486 words) - 23:40, 28 September 2024
  • Thumbnail for Paleobiota of the Niobrara Formation
    mitsukurinid shark similar in appearance to the modern day goblin shark Ptychodus P. anonymus Smoky Hill Chalk A ptychodontid lamniform shark P. martini...
    43 KB (1,746 words) - 18:55, 9 September 2024
  • species of the earlier genus Hybodus. †Ptychodus †P. polygyrus Early-Late Cretaceous, 112–85 mya North America Ptychodus is an extinct genus of very large...
    110 KB (1,343 words) - 09:39, 13 September 2024
  • range of the genera Platecarpus and Enchodus, and possibly of the species Ptychodus mortoni. A diverse biotic community comprising bacteria, fungi, nematodes...
    345 KB (30,122 words) - 22:35, 31 October 2024
  • Thumbnail for Cretodus
    number of other genera of shark including Cretoxyrhina, Squalicorax, Ptychodus, Cretalamna, Scapanorhynchus, and hybodont sharks. In order to coexist...
    8 KB (833 words) - 02:17, 1 October 2024
  • Thumbnail for Carlile Shale
    ISSN 0022-8443. S2CID 88299661. Hamm, Shawn A. (2020). "The First Occurrence of Ptychodus latissimus from the Codell Sandstone Member of the Carlile Shale in Kansas"...
    17 KB (1,251 words) - 09:38, 4 April 2024
  • Thumbnail for Megacephalosaurus
    Cardabiodon, Cretodus, Archaeolamna and Dallasiella, the durophagous Ptychodus, and the sand shark Johnlongia. Several bony fish are also known. Many...
    28 KB (3,293 words) - 07:12, 20 June 2024
  • eufalensis †Pterotrigonia eufaulensis †Pterotrigonia thoracica †PtychodusPtychodus mortoni †Ptychodus polygyrus †Ptychotrygon Pycnodonte †Pycnodonte belli †Pycnodonte...
    49 KB (1,721 words) - 09:59, 12 June 2024
  • shark. Ptychodus atcoensis Species Valid Hamm Cicimurri Late Cretaceous (early Coniacian) Atco Formation  United States A species of Ptychodus. Pueblocarcharias...
    39 KB (1,990 words) - 02:43, 27 June 2024
  • formation has provided the following fossils: Fish Squalicorax falcatus Ptychodus decurrens Rajiformes Enchodus zimapanensis Xeneichthys yanesi Heckelichthys...
    7 KB (512 words) - 08:46, 7 August 2024
  • emoryi †PtychodusPtychodus anonymus – or unidentified comparable form †Ptychodus decurrens †Ptychodus mortoni †Ptychodus occidentalis †Ptychodus whipplei...
    31 KB (1,809 words) - 02:17, 6 August 2024
  • diversification and spread of Ptychodus. Amadori et al. (2023) report the discovery of teeth of various species belonging to the genus Ptychodus from the Cenomanian...
    117 KB (8,944 words) - 12:26, 14 October 2024
  • eufalensis †Pterotrigonia eufaulensis †Pterotrigonia thoracica †PtychodusPtychodus mortoni †Ptychodus polygyrus †Ptychosyca †Ptychosyca inornata †Ptychotrygon...
    46 KB (2,348 words) - 10:01, 12 June 2024
  • Cartilagenous fishes include sharks such as Odontaspis, Squalicorax, and Ptychodus, as well as rays. The largely complete skeleton of the marine crocodyliform...
    10 KB (982 words) - 07:49, 26 March 2024