Agathiceratidae

Agathiceratidae, which lived from the Upper Carboniferous (Pennsylvanian) to the Middle Permian, combine related genera with subdiscoidal to globular shells that have a small umbilicus and goniatitic sutures and are prominently longitudinally lirate.

(Miller et al. 1960) The explanation for the Agathiceratidae is that for the Agathiceratoidea.

In current taxonomy (Furnish et al. 2009), Agathiceratidae contains Agathiceras, Gaetanoceras, Paragathiceras, and Pericleites as compared to Dombarites, Paracravenoceras, Periclietes, Proshumardites, and Agathiceras in Saunders et al. (1999).

Paracravenoceras is now placed in the Gastroceratoidea, Proshunardites combined with Dombarites in the Delepinoceratidae.

The two added genera, Gaetanoceras and Paragathiceras, were considered as equivalent to Agathiceras in Miller et al. (1960).