pachyosteus were large

Medidas aproximadas del Rugops:

The teeth at the front of the dentary projected strongly forward and outward

with a few incisor teeth

These plates fused along the back

Australodelphis mirus Escala:1:35 pachyosteus were largeAustralodelphis mirus was a fossil odontocete belonging to Delphinidae, the family of oceanic dolphins, known from Pliocene deposits of East Antarctica. Formally described by Fordyce, Quilty and Daniels in 2002, this taxon represents one of the most unusual fossil delphinids from the Southern Hemisphere because of its combination of true dolphin affinities and a cranial anatomy convergent with that of ziphiids, or beaked whales. Its generic name may