Cymatoceras
| Cymatoceras Temporal range: U Jurassic - Oligocene | |
|---|---|
 | |
| Cymatoceras species | |
| Scientific classification | |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Nautilida |
| Superfamily: | Nautilaceae |
| Family: | Cymatoceratidae |
| Genus: | Cymatoceras Hyatt, 1884 |
Cymatoceras is a wide ranging genus from the nautilitacean cephalopod family, Cymatoceratidae.
Species
- Cymatoceras pseudoatlas
- Cymatoceras pseudoelegans
- Cymatoceras pseudoneokomiense
Description
Its shell is generally subglobular, variably involute with a rounded whorl section. Sides and venter bear conspicuous ribs. The suture is only slightly sinuous and the siphuncle position is variable.
Paracymatoceras, coeval during the Late Jurassic and Early Cretaceous differs primarily in having a more sinuous suture. Neocymatoceras tsukushiense from the Oligocene of Japan, described by Kobayashi, 1954, is a variant of Cymatoceras.
References
- Bernhard Kummel, 1964. Nautiloidea - Nautilida. Treatise on Invertebrate Paleontology Part K. Geol Soc of America and Univ Kans Press, Teichert & Moore (eds)
- Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopodes
- Fossilworks