Spanioceras

Spanioceras
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Oncocerida
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.

References