|
Cymatoceras
''Cymatoceras'' is a wide-ranging extinct genus from the Nautilaceae, nautilitacean cephalopod family, Cymatoceratidae. They lived from the Late Jurassic to Oligocene, Late Oligocene, roughly from 155 to 23 Ma.Sepkoski, JacSepkoski's Online Genus Database – Cephalopodes/ref> Species The following species of ''Cymatoceras'' have been described: * ''C. albense'' * ''C. atlas'' * ''C. bayfieldi'' * ''C. bifidum'' * ''C. bifurcatum'' * ''C. carlottense'' * ''C. cenomanense'' * ''C. colombiana'' * ''C. crebricostatum'' * ''C. deslongchampsianum'' * ''C. eichwaldi'' * ''Cymatoceras elegans, C. elegans'' * ''C. hendersoni'' * ''C. hilli'' * ''C. honmai'' * ''C. hunstantonensis'' * ''C. huxleyanum'' * ''C. karakaschi'' * ''C. kayeanum'' * ''C. kossmati'' * ''C. loricatum'' * ''C. ludevigi'' * ''C. manuanensis'' * ''C. mikado'' * ''C. neckerianum'' * ''C. negama'' * ''C. neocomiense'' * ''C. pacificum'' * ''C. paralibanoticum'' * ''C. patagonicum'' * ''C. patens'' * ''C. perstriatum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymatoceras Pseudoneokomiense
''Cymatoceras'' is a wide-ranging extinct genus from the nautilitacean cephalopod family, Cymatoceratidae. They lived from the Late Jurassic to Late Oligocene, roughly from 155 to 23 Ma.Sepkoski, JacSepkoski's Online Genus Database – Cephalopodes/ref> Species The following species of ''Cymatoceras'' have been described: * ''C. albense'' * ''C. atlas'' * ''C. bayfieldi'' * ''C. bifidum'' * ''C. bifurcatum'' * ''C. carlottense'' * ''C. cenomanense'' * ''C. colombiana'' * ''C. crebricostatum'' * ''C. deslongchampsianum'' * ''C. eichwaldi'' * ''C. elegans'' * ''C. hendersoni'' * ''C. hilli'' * ''C. honmai'' * ''C. hunstantonensis'' * ''C. huxleyanum'' * ''C. karakaschi'' * ''C. kayeanum'' * ''C. kossmati'' * ''C. loricatum'' * ''C. ludevigi'' * ''C. manuanensis'' * ''C. mikado'' * ''C. neckerianum'' * ''C. negama'' * ''C. neocomiense'' * ''C. pacificum'' * ''C. paralibanoticum'' * ''C. patagonicum'' * ''C. patens'' * ''C. perstriatum'' * ''C. picteti'' * '' C. pseudoatlas'' * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymatoceratidae
The Cymatoceratidae is a family of Mesozoic and early Cenozoic nautiloid cephalopods and the most abundant of their kind in the Cretaceous. They are characterized by ribbed, generally involute shells of varied forms - coiled such that the outer whorl envelops the previous one, as with Nautilus, and sutures that are variably sinuous.Kummel 1964. Nautiloidea-Nautilida; Treatise on Invertebrate Paleontology Part K; Teichert and Moore (eds), Geological Society of America and University of Kansas press Cymatoceratids first appear in the Middle Jurassic, derived from the Lower Jurassic ''Cenoceras'' (Nautilidae) and extend as far as the Oligocene. Taxonomy Ten cymatoceratid genera are described in the Treatise Part K, 1964. First to appear was the large, tightly involute, rapidly expanding '' Procymatoceras'' from the Middle Jurassic, followed by the Middle and Upper Jurassic '' Cymatonautilus'' which has a wide umbilicus and subquadrate whorl section. ''Procymatoceras'' and ''Cyma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymatoceras Elegans
''Cymatoceras elegans'' is an extinct species of nautilitacean cephalopods in the family Cymatoceratidae The Cymatoceratidae is a family of Mesozoic and early Cenozoic nautiloid cephalopods and the most abundant of their kind in the Cretaceous. They are characterized by ribbed, generally involute shells of varied forms - coiled such that the outer .... It is from the Cretaceous of Switzerland and the United Kingdom. References * Prehistoric nautiloids Fossil taxa described in 1816 Cretaceous cephalopods of Europe {{paleo-nautiloid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Animals Of Asia
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic groups present in modern times can be ultimately traced back to origins in the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
