252mya:Basilosaurus sp.Artwork by Lucas LimaPreviously thought to be a marine reptile, Basilosaurus
252mya:Basilosaurus sp.Artwork by Lucas LimaPreviously thought to be a marine reptile, Basilosaurus turned out to be an ancient whale. With a bite force rivaling the likes of Tyrannosaurus rex, this 18 m (59 ft) whale was likely an apex predator in the Eocene seas.—252MYA.com -- source link