Asymptoceras
| Asymptoceras Temporal range: Mississippian
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| Genus: | Asymptoceras Ryckholt 1852
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Asymptoceras is an aipoceratid genus (Nautiloidea) similar to Aipoceras but tightly coiled and with only part of the body chamber divergent from the previous whorl. Shell evolute, expanding fairly rapidly; umbilicus open, perforate; whorl section ovoid to subquadrate.
Asymptoceras is known from Mississippian (Lower Carboniferous) sediments in Europe and North America.
References
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (March 2015) |
- Bernard Kummel, 1964. Nautiloidea - Nautilida; Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
- Asymptoceras in Fossilworks
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