Stereoplasmoceratidae is an extinct family of actively mobile aquatic carnivorous cephalopods belonging to the subclass Orthoceratoidea endemic to what would be Asia during the Ordovician living from 490—457.5 mya, existing for approximately .PaleoBiology Database: Stereoplasmoceratidae, basic info

Taxonomy Stereoplasmoceratidae was named by Kobayashi (1934). It was assigned to Pseudorthocerataceae by Teichert et al. (1964).C. Teichert, B. Kummel, W.C. Sweet, H.B. Stenzel, W.M. Furnish, B.F. Glenister, H.K. Erben, R.C. Moore, and D.E. Nodine Zeller. 1964. Cephalopoda - general features - Endoceratoidea - Actinoceratoidea - Nautiloidea - Bactritoidea. Treatise on Invertebrate Paleontology K(3):1-519

See also

Paleontology

References