Ancestor

Rhytidosteus_capensis

Pneumatostega_potamia

Peltostega_wimani

Peltostega_erici

Deltasaurus_pustulatus

Deltasaurus_kimberleyensis

Derwentia_warreni

Indobrachyops_panchetensis

Rewana_quadricuneata

Mahavisaurus_australis

Mahavisaurus_dentatus