Kingdom Animalia Class Cephalopoda Order Orthocerida | Phylum Mollusca Subclass Nautiloidea Rank Family | |
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Stereoplasmoceratidae is an extinct family of actively mobile aquatic carnivorous cephalopods belonging to the subclass Nautiloidea endemic to what would be Asia during the Ordovician living from 490—457.5 mya, existing for approximately 32.5 million years.
Taxonomy
Stereoplasmoceratidae was named by Kobayashi (1934). It was assigned to Pseudorthocerataceae by Teichert et al. (1964).
References
Stereoplasmoceratidae Wikipedia(Text) CC BY-SA