Cyrtoceras is an extinct genus of oncoceridan nautiloids that lived from the middle Ordovician to the middle Devonian, in Africa, Europe, North America and South America.
Cyrtoceras Temporal range: [dead link]
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Digital life restoration of "Cyrtoceras sp" | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | Nautiloidea |
Order: | †Oncocerida |
Genus: | †Cyrtoceras Conrad, 1838 |
Type species | |
†Cyrtoceras minneapolis Whiteaves, 1890
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Species[2] | |
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References
edit- ^ Teiichi KOBAYASHI (1987). "The Ancestry of the Cephalopoda: From Helcionella to Plectronoceras". Proceedings of the Japan Academy, Series B: Physical and Biological Sciences. 63 (5): 135–138. Bibcode:1987PJAB...63..135K. doi:10.2183/pjab.63.135.
- ^ "Cyrtoceras". Global Biodiversity Information Facility. Retrieved 6 November 2021.
Sources
edit- Fossils (Smithsonian Handbooks) by David Ward
- Fossils (A Golden Guide from St. Martin's Press) by Frank H. T. Rhodes, Paul R. Shaffer, Herbert S. Zim, and Raymond Perlman
- Aquagenesis: The Origin and Evolution of Life in the Sea by Richard Ellis
External links
edit- Cyrtoceras in the Paleobiology Database