Placerias is an extinct genus of dicynodonts that lived during the late Carnian age of the Triassic Period million years ago). It was one of the largest herbivores in the Late Triassic, measuring up to metres ft) long and weighing up to a tonne.
Meet Yuka, the 39,000-year-old mummified woolly mammoth scientists want to clone
Arizonasaurus babbitti, a sailbacked poposauroid from the Middle Triassic of Arizona, USA, about 243 million years ago. Despite looking very much like a retro Spinosaurus, this animal was actually a member of the pseudosuchia – the.