Even the apex predator of the Late Cretaceous had to watch its back. This investigation reveals the animals — from horned ceratopsians to massive ankylosaurs — that made hunting risky for T. rex. A ...

A water-dwelling predator, Spinosaurus ruled the seas and the land of the Late Cretaceous. With its fearsome jaws, crocodile-like features, and prehistoric sail, this documentary explores how the ...