Orthoceratidae

Orthoceratidae Temporal range: Ordovician - Permian (possibly Triassic)
Orthoceras
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	†Orthocerida
Family:	†Orthoceratidae McCoy, 1844
Genera
†Bitaunioceras †Chebbioceras †Ctenoceras †Infundibuloceras †Kionoceras †Kopaninoceras †Merocycloceras †Michelinoceras †Ogygoceras †Orthoceras †Orthocycloceras †Oxfordoceras †Palorthoceras †Plagiostomoceras †Pleurorthoceras †Pojetoceras †Polygrammoceras †Pseudospyroceras †Striatocycloceras †Theoceras †Tibichoanoceras †Trematoceras
Synonyms
Orthocerotidae

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 286.4 million years.^[1]