Baltoceratidae

Baltoceratidae Temporal range: Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	†Orthocerida
Family:	†Baltoceratidae Kobayashi (1935)
Genera
†Amsleroceras †Annbactroceras †Bactroceras †Castelloceras †Cochlioceras †Cyrtobaltoceras †Endorioceras †Eosomichelinoceras †Hedstroemoceras †Metabaltoceras †Microbaltoceras †Rhabdiferoceras †Rioceras †Semiannuloceras †Veneficoceras

Baltoceratidae is an extinct family of orthoconic cephalopods belonging to the subclass Nautiloidea endemic to what would be Asia, Australia, Europe, North America, and South America during the Ordovician living from about 480–460 mya, existing for approximately 20 million years.^[1]