Orthocycloceras
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| Orthocycloceras | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | †Orthocerida |
| Genus: | †Orthocycloceras |
Orthocycloceras, from Ancient Greek ὀρθός (orthós), meaning "straight", κύκλος (kúklos), meaning "circle", and κέρας (kéras), meaning "horn", is an extinct genus of actively mobile carnivorous cephalopods, essentially a nautiloid, that lived in what would be Europe during the Silurian to Devonian from 428.2 to 412.3 mya, existing for approximately 15.9 million years.[1]
Orthocycloceras was assigned to Orthocerida Sepkoski (2002).[2]