Biology:Shelbyoceras
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Short description: Extinct genus of molluscs
| Shelbyoceras | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Monoplacophora |
| Order: | †Archinacelloidea |
| Family: | †Shelbyoceridae |
| Genus: | †Shelbyoceras Ulrich & Foerste, 1931 |
| Type species | |
| Shelbyoceras robustum Ulrich & Foerste, 1936
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| Species | |
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Shelbyoceras is a genus of Cambrian monoplacophora which was one of the genera mistaken for a cephalopod, since the characteristics differentiating monoplacophora from cephalopods are few. Shelbyoceras was reclassified based on a depressed groove that forms a band around the shell, which is similar to a feature seen in Hypseloconus[2] (with whom it may be synonymous).[3] The septa in this genus are either closely or irregularly spaced.[2]
References
- ↑ Stinchcomb, B. L. (1986). "New Monoplacophora (Mollusca) from Late Cambrian and Early Ordovician of Missouri". Journal of Paleontology 60 (3): 606–626. doi:10.1017/s0022336000022149.
- ↑ 2.0 2.1 Stinchcomb, B. L. (1980). "New Information on Late Cambrian Monoplacophora Hypseloconus and Shelbyoceras (Mollusca)". Journal of Paleontology (Paleontological Society) 54 (1): 45–49. doi:10.2307/1304159.
- ↑ Stinchcomb, B. L.; Echols, D. J. (1966). "Missouri Upper Cambrian Monoplacophora Previously Considered Cephalopods". Journal of Paleontology 40 (3): 647–650. doi:10.2307/1301748.
Wikidata ☰ Q7493425 entry
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