Diplognathodus is an extinct genus of conodonts in the family Anchignathodontidae.

[2][3] Specimens are found in Carboniferous[4] and Permian formations.

The genus Sweetognathus originated in the earliest Permian as S. expansus from Diplognathodus edentulus.

[5] Diplognathodus ellesmerensis has been proposed as a marker of the Moscovian, in the Pennsylvanian age of the Carboniferous.

This article about a conodont is a stub.