Diario Jurásico

Prehistory

Megatherium: the sloth that lived on the ground

Megatherium was a giant ground sloth from South America. Its heavy body and strong tail made it very...

Prehistory

Elasmotherium: the so-called Siberian unicorn was a rhino

Elasmotherium survived much later than once thought. Its teeth suggest that this unusual rhino depended strongly on grazing.

Prehistory

Paraceratherium: the giant rhino that had no horn

Paraceratherium was a huge, long-necked relative of rhinos. Its body shows how different the rhino family once looked.

Prehistory

Daeodon: the huge-jawed mammal often mistaken for a pig

Daeodon looked piglike, but belonged to an extinct group called entelodonts. Its large skull and strong teeth point...

Prehistory

Thylacoleo: Australia's marsupial lion was not a cat

Thylacoleo was a powerful Australian predator, but it belonged to the marsupials. Its teeth and hands reveal a...

Prehistory

The Irish elk: a giant deer with antlers wider than a doorway

The animal called the Irish elk was a giant deer found far beyond Ireland. Its enormous antlers were...

Prehistory

Mastodon or mammoth? The teeth tell a different story

Mastodons and mammoths both had trunks and tusks. Their teeth reveal different family histories and important differences in...

Prehistory

Brachiosaurus: why its front legs made such a difference

Brachiosaurus had longer front legs than back legs. That gave its body high shoulders and a different shape...

Prehistory

Diplodocus: a long dinosaur with a small feeding tool

Diplodocus stretched far from head to tail, but its head was small. Peg-shaped teeth at the front of...