Celtitidae

The Celtitidae is a family of strongly evolute, discoidal ceratitid ammonites from the middle Triassic in which the whorls overlap very little if at all. Sides may be ribbed, either radially or as to slope toward the apartural end, i.e. front. The Celtitidae is included in the Tropitaceae and may include Celtites, Cycloceltites, Otoceltites, Indoceltites, Coeloceltites, Tropogastrites, and Tropogymnites.