Xenoceltites

Xenoceltites is an extinct genus of ceratite ammonoid found worldwide in the Lower Triassic.

Diagnosis
One of the earliest ceratites, Xenoceltites has a narrow planospiral shell with a compressed whorl section, that has a suture with two weakly toothed lateral lobes and irregular ribbing.

Classification
Xenoceltites belongs to the Xenoceltitidae, a family within the order Ceratitida that with two others form the superfamily Xenodiscaceae.