Orthoceratidae, is an extinct family of actively mobile carnivorous cephalopods, subclass Nautiloidea, that lived in what would be North America, Europe, Asia, Africa, and Australia from the Ordovician through Triassic from 490—203.7 mya, existing for approximately {Mya|490-203.6|million years}. ==Taxonomy== Orthoceratidae was named by McCoy (18...