References
 | This prehistoric cephalopod-related article is a stub. You can help Wikipedia by expanding it. |
| Spanioceras | |
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| Genus: | Spanioceras |
Spanioceras is an extinct genus of nautiloid cephalopods belonging to the order Oncocerida, which is thought to have given rise to the Nautilida which includes the living Nautilus .
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