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Endemoceratoidea
Endemoceratoidea is a superfamily of true ammonites (suborder Ammonitina). Taxonomy Families included in the Endemoceratoidea are: * Endemoceratidae * Neocomitidae * Pulchelliidae ''Pulchelliidae'' is an extinct ammonoid cephalopod family. with and (1996), ''Mollusca 4 Revised , Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The ... References Ammonitida superfamilies {{Ammonitina-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemoceratoidea
Endemoceratoidea is a superfamily of true ammonites (suborder Ammonitina). Taxonomy Families included in the Endemoceratoidea are: * Endemoceratidae * Neocomitidae * Pulchelliidae ''Pulchelliidae'' is an extinct ammonoid cephalopod family. with and (1996), ''Mollusca 4 Revised , Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The ... References Ammonitida superfamilies {{Ammonitina-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulchelliidae
''Pulchelliidae'' is an extinct ammonoid cephalopod family. with and (1996), ''Mollusca 4 Revised , Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p. 111. It was previously classified as belonging to the superfamily Endemoceratoidea. They lived during the Cretaceous, in the Barremian age. Subfamilies and genera * '' Buergliceratinae'' * '' Psilotissotiinae'' * '' Pulchelliinae'' (Vermeulen 1995) ** '' Nicklesia'' (Hyatt) ** '' Pulchellia'' (Uhlid) ** ''Gerhardtia'' (Hyatt) ** '' Coronites'' (Hyatt) ** '' Curiolites'' (Vermeulen) ** ''Heinzia'' (Sayn) Distribution Fossils of species within this genus have been found in the Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonitina
Ammonitina comprises a diverse suborder of ammonite cephalopods that lived during the Jurassic and Cretaceous periods of the Mesozoic Era. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geological time periods. The shells of Ammonitina are typically planospiral; coiled in a plane, symmetrical side to side. Shells vary in form, including those that are evolute, such that all whorls are exposed, and those that are strongly involute with only the outer whorl showing. They may be strongly ribbed, some bearing nodes and spines; others are entirely smooth. Some have broad rounded venters (the outer rim); in others the venter is sharp and keel-like. Sutures are generally ammonitic, with intricately patterned saddle and lobes. However, in some derived forms the suture becomes simplified, ceratitic, even goniatitic. The Ammonitina are derived from the Phylloceratina, another ammonitid suborder which has its origin in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |