Nathorstitaceae

Nathorstitaceae, Nathorstitoidea in more recent references, is a superfamily of ceratitid Ammonoidea, mostly from the middle Triassic that unites the Nathorstitidae, Proteusitidae, and Thanamitidae.

Shells of nathorstitacean genera are typically involute, the outer whorl envoloping those previous; generally smooth and subglobose. Sutures are ceratitiic to subammonitic.