Wikipedia
Asymptoceras
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 Temporal range: Mississippian | |
|---|---|
| Asymptoceras newloni | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Nautilida |
| Family: | †Aipoceratidae |
| Genus: | †Asymptoceras Ryckholt, 1852 |
| Species[1] | |
| |
Asymptoceras is known from Mississippian (Lower Carboniferous) sediments in Europe and North America.
References edit
- ^ "Asymptoceras". Fossilworks. Gateway to the Paleobiology Database. Retrieved 29 April 2022.
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