Parasphaerorthoceras
From Wikipedia, the free encyclopedia
| Parasphaerorthoceras Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | †Orthocerida |
| Family: | †Sphaerorthoceratidae |
| Genus: | †Parasphaerorthoceras Ristedt 1968 |
| Species | |
| |
Parasphaerorthoceras is an extinct orthocerid genus, a nautiloid cephalopod, that lived in what would be Europe and north Africa during the Silurian from 422.9 to 418.1 mya, having existed for approximately 4.8 million years.[1]
Parasphaerorthoceras was named by Ristedt in 1968, who placed it in the Sphaerorthoceratidae, which he also named. Parasphaerorthoceras is listed in Jack Sepkoski's (2002) list of Cephalopod genera under Orthocerida[2] It is also classified and described in some detail in Björn Kröger's 2008 paper on Silurian and Devonian nautiloids from Morocco[3]
