La descripción del esqueleto postcraneal no está completamente conocida

the best known species is the woolly mammoth (Mammuthus primigenius)

Dimetrodon was not a dinosaur

adopts a defensive stance

flapped its wings frantically trying to evade the predator

Guanlong wucaii Torosaurus La descripción del esqueleto postcranealGuanlong wucaii was a carnivorous dinosaur that lived during the Late Jurassic period, approximately 156 million years ago, in the Oxfordian, in what is now Asia. This dinosaur is notable for being one of the first known members of the tyrannosauroid group, the precursors of the famous Tyrannosaurus rex. In terms of size, the Guanlong wucaii was relatively small compared to its better known descendants. Fossils indicate that it reached a length of