Cooperoceras: Difference between revisions
Content deleted Content added
added Category:Fossils of Texas using HotCat |
m Robot - Removing category Fossils of Illinois per CFD at Wikipedia:Categories for discussion/Log/2017 August 0. |
||
| Line 23: | Line 23: | ||
[[Category:Prehistoric nautiloid genera]] |
[[Category:Prehistoric nautiloid genera]] |
||
[[Category:Fossils of Illinois]] |
|||
[[Category:Fossils of Texas]] |
[[Category:Fossils of Texas]] |
||
Revision as of 12:02, 25 October 2017
| Cooperoceras Temporal range: LPermian
| |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Subclass: | |
| Order: | |
| Superfamily: | |
| Family: | |
| Genus: | Cooperoceras Miller 1945
|
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.