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Ceratites
''Ceratites'' is an extinct genus of ammonite cephalopods. These nektonic carnivores lived in marine habitats in what is now Europe, during the Triassic, from the upper-most Anisian to the lower Ladinian age.Sepkoski, JacSepkoski's Online Genus Database – Cephalopoda/ref> Description This ammonite has a ceratitic suture pattern on its shell (smooth lobes and frilly saddles). Evolution of the frilly saddles is thought to be due to increased pressure on the shell, at greater depth. The frilly pattern would increase the strength of the shell and allow ''Ceratites'' to dive deeper, possibly in search of food. Distribution Fossils of this genus are only known from the Germanic Basin, which formed a partially isolated shallow sea across much of Europe from eastern France north of the future Alps and into Poland, separated from the Tethys by 3 gates that variably opened. The salinity of the water in this partially isolated basin may have been one of the main factors keeping ammonoid a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratitidae
''Ceratitidae'' is an extinct family of ammonite cephalopods. Fossils of ''Ceratitidae'' are found in the Triassic marine strata throughout the world, including Asia, Europe, the Middle East, North America, and Oceania. Selected genera Subfamily Ceratitinae Mojsisovics 1879 * '' Acanthoceratites'' Schrammen 1928 * '' Alloceratites'' Spath 1934 * ''Ceratites ''Ceratites'' is an extinct genus of ammonite cephalopods. These nektonic carnivores lived in marine habitats in what is now Europe, during the Triassic, from the upper-most Anisian to the lower Ladinian The Ladinian is a stage and age in the ...'' de Haan 1825 * '' Eogymnotoceras'' Bucher 1988 * '' Latemarites'' Brack and Rieber 1993 Subfamily Nevaditinae Tozer 1994 * '' Alkaites'' Balini et al. 2006 * '' Chieseiceras'' Brack and Rieber 1986 * '' Detoniceras'' Manfrin and Mietto 1991 * '' Nevadites'' Smith 1914 * '' Paranevadites'' Tozer 1994 * '' Xenoprotrachyc'' Subfamily Paraceratitinae Silberling 1962 * '' Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |