• Thumbnail for Placenticeras
    Placenticeras is a genus of ammonites from the Late Cretaceous. Its fossils have been found in Asia, Europe, North and South America. Placenticeras, named...
    4 KB (340 words) - 02:51, 31 August 2024
  • Thumbnail for Placenticeras meeki
    Placenticeras meeki is an ammonite species from the Late Cretaceous. These cephalopods were fast-moving nektonic carnivores. They mainly lived in the...
    1 KB (107 words) - 01:36, 16 March 2023
  • Thumbnail for Ammonoidea
    known for the abundant ammonite fauna it yields, including Baculites, Placenticeras, Scaphites, Hoploscaphites and Jeletzkytes, as well as many uncoiled...
    52 KB (5,802 words) - 08:19, 25 September 2024
  • Thumbnail for Ammolite
    fossil shells of the Upper Cretaceous disk-shaped ammonites Placenticeras meeki and Placenticeras intercalare, and (to a lesser degree) the cylindrical baculite...
    26 KB (3,156 words) - 20:33, 3 July 2024
  • marroti / Hoplitoplacenticeras vari zone of Delawarella delawarensis zone of Placenticeras bidorsatum During the Campanian age, a radiation among dinosaur species...
    12 KB (1,001 words) - 10:20, 26 February 2024
  • Thumbnail for Mosasaur
    been found in fossil shells of some ammonites, mainly Pachydiscus and Placenticeras. These were once interpreted as a result of limpets attaching themselves...
    59 KB (5,198 words) - 15:15, 28 September 2024
  • lower part of the Upper Cretaceous and precursor of the overall similar Placenticeras. The shell is compressed, with flat or slightly convex sides and narrow...
    2 KB (173 words) - 19:32, 18 July 2023
  • genus Caseyella. A study on the morphological variation of specimens of Placenticeras from the Upper Cretaceous strata of the eastern Gulf Coastal Plain (mostly...
    116 KB (6,218 words) - 15:50, 3 October 2024
  • Thumbnail for Archelon
    includes a variety of mollusks, namely ammonites–from the Pierre Shale Placenticeras placenta, Scaphites nodosus, Didymoceras, and Baculites ovatus–bivalves–such...
    34 KB (3,896 words) - 21:19, 4 April 2024
  • Thumbnail for Bearpaw Formation
    famous for its well-preserved ammonite fossils. These include Placenticeras meeki, Placenticeras intercalare, Hoploscaphites, and Sphenodiscus, the baculite...
    18 KB (1,135 words) - 04:14, 1 September 2024
  • Thumbnail for Timeline of mosasaur research
    Kauffman and Robert Kesling reported a fossil ammonite of the genus Placenticeras exhibiting damage they interpreted as tooth marks from a mosasaur, probably...
    130 KB (12,455 words) - 04:45, 7 August 2024
  • domain the Santonian is coeval with a single ammonite biozone: that of Placenticeras polyopsis. Biostratigraphy based on inoceramids, nanoplankton or forams...
    8 KB (553 words) - 18:38, 16 August 2024
  • also the direct ancestor of Late Cretaceous placenticeratids such as Placenticeras and Hypengonoceras. Sepkoski, Jack (2002). "Sepkoski's Online Genus...
    2 KB (120 words) - 01:15, 31 January 2022
  • Thumbnail for Placenticeratidae
    the Early Cretaceous, starting with Hypengonoceras. The type genus, Placenticeras, appears later and is known from the upper Santonian to the lower Campanian...
    2 KB (185 words) - 19:31, 18 July 2023
  • Pholadomya †Pholadomya coloradensis †Pholadomya coloradoensis †Pinna †PlacenticerasPlacenticeras pseudoplacenta Polinices †Polinices concinna †Prionocyclus †Prionocyclus...
    15 KB (521 words) - 14:56, 26 September 2024
  • Thumbnail for Pierre Shale
    Uppermost DeGrey Formation. Specimens associated with Globidens schurmanni. Placenticeras P. intercalere Bowman County, North Dakota. "One decorticated specimen...
    69 KB (2,329 words) - 23:44, 16 July 2024
  • Thumbnail for Paleontology in Wisconsin
    from this time are present in Wisconsin. These include the species Placenticeras pseudoplacenta and Scaphites carlilensis. During the Quaternary, deposition...
    26 KB (2,507 words) - 02:53, 17 June 2024
  • protexta Phacoides †Phacoides mattiformis Pholadomya †Pinna †PlacenticerasPlacenticeras benningi †Platecarpus †Pleuriocardia †Pleuriocardia eufalensis...
    31 KB (1,681 words) - 18:25, 12 February 2024
  • Pholas – tentative report †Pinna †Pinna laqueata †PlacenticerasPlacenticeras placenta †Placenticeras syrtale †Pleuriocardia – or unidentified related...
    28 KB (1,424 words) - 18:25, 12 February 2024
  • †Phyloblatta †Phyloblatta grimaldii – type locality for species †Pinna †Placenticeras – tentative report †Placerias †Placerias hesternus †Platananthus †Platananthus...
    34 KB (1,867 words) - 01:48, 25 August 2024
  • †Phlycticrioceras trinodosus †Pinna †PlacenticerasPlacenticeras meeki †Placenticeras placentum †Placenticeras syrtale †Plastomenus – tentative report...
    47 KB (2,590 words) - 19:06, 24 May 2024
  • Thumbnail for List of ammonite genera
    Pictonia Pimelites Pinaclymenia Pinacoceras Pinacoplacites Piriclymenia Placenticeras Placites Planammatoceras Planisphinctes Plasmatoceras Platotropites...
    65 KB (2,780 words) - 20:33, 4 September 2024
  • Thumbnail for Coilopoceratidae
    Albian–Turonian PreꞒ Ꞓ O S D C P T J K Pg N Herrickiceras costatus (Placenticeras costatum) Scientific classification Domain: Eukaryota Kingdom: Animalia...
    2 KB (169 words) - 19:47, 17 April 2021
  • Thumbnail for Annona Chalk
    plerucostatum N. (Nostoceras) pulcher Oxybeloceras O. crassum Pachydiscus Placenticeras Alatacythere A. ponderosana Bairdoppilata B. rotunda Brachycythere B...
    7 KB (473 words) - 12:26, 14 February 2024
  • Thumbnail for Herrickiceras
    93.5–89.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Herrickiceras costatus (Placenticeras costatum) Scientific classification Domain: Eukaryota Kingdom: Animalia...
    2 KB (102 words) - 21:27, 14 April 2021
  • Thumbnail for Ojinaga Formation
    densicostatus Submortoniceras tequesquitense Inoceramus undulatuplicatus Placenticeras planum Eutrephoceras dekayi Eutrephoceras alcesense Baculites sp. Exogyra...
    5 KB (323 words) - 09:57, 24 May 2024
  • †Piestochilus curviliratus Pinna †Pinna laqueata †PlacenticerasPlacenticeras placenta †Placenticeras syrtale †Plagiostoma †Plagiostoma woodsi †Platecarpus...
    48 KB (2,430 words) - 10:01, 12 June 2024
  • Pholadomya †Pholadomya occidentalis †Pholadomya tippana †Pinna †PlacenticerasPlacenticeras benningi †Plagiostoma †Platecarpus Plicatula Polinices †Polycotylus...
    49 KB (1,721 words) - 09:59, 12 June 2024
  • locality for species Pholadomya †Pinna †PlacenticerasPlacenticeras cumminsi †Placenticeras meeki †Placenticeras pseudoplacenta †Planolites Platanus †Platecarpus...
    70 KB (2,640 words) - 10:36, 13 April 2024
  • †Piceoerpeton Pinna Pinus Pistacia †Pistia †PlacenticerasPlacenticeras intercalare †Placenticeras meeki †Placenticeras pseudoplacenta †Plagiostoma Planorbis...
    98 KB (3,870 words) - 22:03, 3 June 2024