Sibiritidae

	Sibiritidae Sibiritidae constitutes a family of ceratitid ammonites described in the Treatise, Part L, 1957, as ribbed or teberculate derivatives of Meekoceritidae with modification of the venter from mere widening and transverse ribbing to sulcation (being grooved). The Sibiritidae have been removed from the Noritaceae where 8 genera were included to the Ceratitaceae Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in order Ceratitida characterized in general by highly ornamented or tuberculate shells with ceratitic sutures that may become goniatitic or ammonitic in some offshoots. (Arkell ' ... with some 14 genera within three defined subfamilies, as indicated. Keyserlingitinae :'' Goricanites'' :'' Olenekoceras'' :'' Pseudokeyserlingites'' :'' Subolenekites'' Olenikitinae :'' Kazakhstanites'' :'' Olenikites'' :'' Prohungarites'' :'' Pseudosvalbardiceras'' :'' Svalbardiceras'' :'' Timoceras'' :'' Tjururpites'' Silberlingitinae :'' Silberlingites'' ''Refere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Olenikites ''Olenekoceras'' is an ammonoid cephalopod from the Lower Triassic included in the ceratitid family Sibiritidae, once included in the Noritaceae but now in the Ceratitaceae Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in order Ceratitida characterized in general by highly ornamented or tuberculate shells with ceratitic sutures that may become goniatitic or ammonitic in some offshoots. (Arkell ' .... Distribution Japan and the Russian Federation. References ;Notes ;Bibliography * W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press. Triassic ammonites Fossils of Russia Olenekian life Ceratitida genera Ceratitoidea {{ceratitida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ceratitoidea Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in order Ceratitida characterized in general by highly ornamented or tuberculate shells with ceratitic sutures that may become goniatitic or ammonitic in some offshoots. (Arkell ''et al.'' 1962) Phylo-taxonomy The Ceratitoidea, according to the ''Treatise on Invertebrate Paleontology'' (fig. 149, L104) can be divided into the Lower Triassic Hellenitidae, Dinaritidae, Tirolitidae, and Stephanitidae; the essentially lower Middle Triassic Acrochordiceratidae, Beyrichitidae, and Proteusitidae; and the lower Middle and post lower Middle Triassic Ceratitidae and its descendant families. Families descendent from the Ceratidae are the Aplococeratidae and possibly or coeval, the Balatonitidae, Danubitidae, and Hungaritidae, and from the Hungaritidae, the Carnitidae. Of these the Balatonitidae and Danubitidae are restricted to the Anisian (lower Middle Triassic); the Ceratitidae and Hungaritidae to the Anisia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ceratitaceae Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in order Ceratitida characterized in general by highly ornamented or tuberculate shells with ceratitic sutures that may become goniatitic or ammonitic in some offshoots. (Arkell ''et al.'' 1962) Phylo-taxonomy The Ceratitoidea, according to the ''Treatise on Invertebrate Paleontology'' (fig. 149, L104) can be divided into the Lower Triassic Hellenitidae, Dinaritidae, Tirolitidae, and Stephanitidae; the essentially lower Middle Triassic Acrochordiceratidae, Beyrichitidae, and Proteusitidae; and the lower Middle and post lower Middle Triassic Ceratitidae and its descendant families. Families descendent from the Ceratidae are the Aplococeratidae and possibly or coeval, the Balatonitidae, Danubitidae, and Hungaritidae, and from the Hungaritidae, the Carnitidae. Of these the Balatonitidae and Danubitidae are restricted to the Anisian (lower Middle Triassic); the Ceratitidae and Hungaritidae to the Anisian an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Goricanites ''Goricanites'' is a ceratitid ammonoid cephalopod known only from the Lower Triassic Union Wash formation of California (USA). This fossil is included in the family Sibiritidae Sibiritidae constitutes a family of ceratitid ammonites described in the Treatise, Part L, 1957, as ribbed or teberculate derivatives of Meekoceritidae with modification of the venter from mere widening and transverse ribbing to sulcation (bein ... and subfamily Keyserlingitinae References''Goricanites'' Paleodb Triassic ammonites Ceratitida genera Ceratitoidea {{ceratitida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Olenekoceras ''Olenekoceras'' is an ammonoid cephalopod from the Lower Triassic included in the ceratitid family Sibiritidae, once included in the Noritaceae but now in the Ceratitaceae Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in order Ceratitida characterized in general by highly ornamented or tuberculate shells with ceratitic sutures that may become goniatitic or ammonitic in some offshoots. (Arkell ' .... Distribution Japan and the Russian Federation. References ;Notes ;Bibliography * W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press. Triassic ammonites Fossils of Russia Olenekian life Ceratitida genera Ceratitoidea {{ceratitida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Keyserlingitinae Keyserlingitinae is a subfamily of the Sibiritidae, Early Triassic Ammonoidea. Shells tend to have subquadrate whorl sections as in ''Durgaites'' and ''Kyserlingites'' and to be strongly ribbed or nodose or both. Genera The Keyserlingitinae includes '' Kyserlingites'' '' Durgaites'' ''Goricanites'' ''Olenekoceras ''Olenekoceras'' is an ammonoid cephalopod from the Lower Triassic included in the ceratitid family Sibiritidae, once included in the Noritaceae but now in the Ceratitaceae Ceratitoidea, formerly Ceratitaceae, is an ammonite superfamily in o ...'' '' Pseudokeyserlingites'' '' Subolenekites'' References * W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press. Keyserlingitinae Paleod Triassic ammonites Ceratitoidea {{ceratitida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ceratitida Families Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammonites. Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic. Taxonomy * Ceratitida Ceratitoidea Choristoceratoidea Clydonitoidea Danubitoidea Dinaritoidea Lobitoidea Meekoceratoidea Megaphyllitoidea Nathorstitoidea Noritoidea Otoceratoidea Pinacoceratoidea Ptychitoidea Sageceratoidea Tropitoidea Xenodiscoidea Only eight superfamilies are shown i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]