Eremoceras
| Eremoceras Temporal range: Lower Ordovician | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Ellesmerocerida |
| Family: | Ellesmeroceratidae |
| Genus: | Eremoceras Hyatt,1884 |
| Species | |
| |
Eremoceras is a genus in the Ellesmeroceratidae which lived during the Early Ordovician, characterized by an orthoconic adult stage, similar to Ellesmeroceras, but with the dorsal side of the adult living chamber somewhat convex, and a juvenile portion that is more gradually expanding and ventrally concave. The siphuncle is ventral, partitioned by diaphragms as typical for the family. Siphuncle segments have short septal necks and thick connecting rings.
References
- Rousseu H Flower, 1964. The Nautiloid Order Ellesmeroceratida (Cephalopoda) New Mexico Bureau of Mines and Mineral Resources Memoir 12.
This article is issued from Wikipedia - version of the 4/28/2012. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.