Ptychoceratodus is an extinct genus of lungfish living from Early Triassic to Middle Jurassic.

It was established by Otto Jaekel for one species (P. runcinatus), transferred from Ceratodus genus.

[8][9] Ptychoceratodus had two pairs of massive dental plates, bearing 4-6 acute ridges.

The anatomy of skull is the best recognized in P. serratus,[9] whereas less complete cranial material is available also for P. concinuus, P. phillipsi, and P.

[10] Although Ptychoceratodus is known exclusively from the Triassic and Jurassic,[11] there were also Cretaceous specimens referred to this genus.