Arctoprionites
Encyclopedia
Arctoprionites is an extinct ammonite (s.l.) genus from the Triassic, belonging to the ceratitid
family Prionitidae. It has been found in Canada in British Columbia, in Japan, Kazakhstan, and in the U.S. in Nevada.
Ceratitida
The Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammonites....
family Prionitidae. It has been found in Canada in British Columbia, in Japan, Kazakhstan, and in the U.S. in Nevada.