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. References
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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. References
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