Cooperoceras: Difference between revisions
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| fossil_range = Late [[Permian]] |
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| image = Diorama of a Permian seafloor - coiled cephalopod, sponges, brachiopods (43887749560).jpg |
| image = Diorama of a Permian seafloor - coiled cephalopod, sponges, brachiopods (43887749560).jpg |
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| image_caption = Reconstruction of ''C. texanum'' at [[Carnegie Museum of Natural History]] |
| image_caption = Reconstruction of ''C. texanum'' at [[Carnegie Museum of Natural History]] |
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Revision as of 22:42, 4 March 2021
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (February 2020) |
 | This article relies largely or entirely on a single source. (February 2020) |
| Cooperoceras Temporal range: Late Permian
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| Reconstruction of C. texanum at Carnegie Museum of Natural History | |
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| Genus: | Cooperoceras Miller 1945
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Cooperoceras is a genus of Tainoceratid nautiloid cephalopod molluscs within the superfamily Tainocerataceae, characterized by and evolute shell with an open, perforate, umbilicus, sinuous ribs at maturity, and recurved hollow spines along the ventro-lateral shoulders. The flanks and venter are flattened, the flanks converge on the dorsum, the venter has a shallow median groove. The suture is with rounded ventral and lateral lobes. The siphuncle is small, tubular, and subcentral. (Kummel 1964, K413)
Cooperoceras, known from the Lower Permian of N America and Europe (Urals), was named by Miller in 1945. The genotype is Cooperoceras texanum.
The phylogenetic relationships of Cooperoceras are unclear.
References
- Kummel,B. 1964, Nauiloidea-Nautilida, in The Treatise on Invertebrate Paleontology, Part K, Nautiloidea; Geological Society of America and University of Kansas Press.
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