Acanthoclymenia Temporal range: | |
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Genus: | Acanthoclymenia Hyatt, 1900 |
Type species | |
Acanthoclymenia neapolitana Clarke, 1898 |
Acanthoclymenia is genus of ammonoid cephalopods belonging to the Acanthoclymeniidae family. Species belonging to this genus lived in middle and late Devonian (upper Givetian - lower Frasnian). Its fossils were found in Europe, Asia, north Africa, North America and Australia. [1] [3] Species of this genus had discoidal shells with flattened venter. [2]
There were more finds of this genus, but without valid description:
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Raymondiceras is genus of ammonoid cephalopod belonging to the Cheiloceratidae family. Species belonging to this genus lived in late Devonian (Famennian).
Calycoceras is an extinct genus of cephalopods belonging to the subclass Ammonoidea and family Acanthoceratidae that lived during the Cenomanian stage of the Late Cretaceous, 100-94 Mya. Their shells had ornate ribs.
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Beloceras is a genus of ammonites included in the family Beloceratidae. These fast-moving nektonic carnivores lived in the Late Devonian period, from 379.5 to 376.1 Ma.
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Domanikoceras is monospecific genus of ammonoids that lived during the lower Frasnian stage of upper Devonian period and was named after Domanic Suite in the Timan (Russia). Compressed and smooth shell of these ammonoids had closed umbilicus. Suture was the same as in the gase of genus Tornoceras, while growth lines were similar to Cheiloceratidae, as they were strictly convex. The only species belonging to this genus is D. timidum and its name has been derived from Latin word timid (shy) because course of its aperture has protecting course.
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