Tuditanomorphs lived from the Late Carboniferous to the Early Permian and are known from North America and Europe.

Tuditanomorphs display considerable variability, especially in body size, proportions, dentition, and presacral vertebral count.

Goniorhynchidae, Hapsidopareiidae, and Trihecatontidae appear in the Late Pennsylvanian and Early Permian.

[1] Gymnarthrids, pantylids, and Ostodolepidae, originally considered in the Tuditanomorpha, were later placed in the group Recumbirostra.

[2][3][4] Asaphestra, previously thought to be the member of Tuditanomorpha, was reclassified as primitive synapsid in 2020.