Protocetus atavus Variant:Hand painted One of the most striking

One of the most striking features of the Inostrancevia alexandri is its robust and long skull

Snout-tail length 348 mm

This suggests that Dreadnoughtus had large muscle mass and considerable strength in its limbs

flattened duck-like beak

Protocetus atavus Variant:Hand painted One of the most strikingProtocetus atavus is a species of primitive cetacean that belongs to the family Protocetidae, an ancestral branch of cetaceans that represents a transition between land mammals and modern cetaceans. This species lived during the Eocene, approximately 45 million years ago. Its name, Protocetus, reflects its position as an early ancestor of cetaceans. Physically, Protocetus atavus shared both terrestrial and aquatic characteristics. Although it already