Biology:Asymptoceras
From HandWiki
Short description: Extinct genus of nautiloids
| Asymptoceras | |
|---|---|
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| Asymptoceras newloni | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Nautilida |
| Family: | †Aipoceratidae |
| Genus: | †Asymptoceras Ryckholt, 1852 |
| Species[1] | |
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Asymptoceras is a genus of aipoceratids (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.[citation needed]
Asymptoceras is known from Mississippian (Lower Carboniferous) sediments in Europe and North America.
References
- Bernard Kummel, 1964. Nautiloidea - Nautilida; Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
- Asymptoceras in Fossilworks
Wikidata ☰ Q19595960 entry
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- ↑ Asymptoceras at fossilworks.org (retrieved 29 April 2022)
