Tyrannosaurus rex may have been three species, scientists say

Experts say there is enough variation in samples to argue there was also a Tyrannosaurus imperator and a reginaWith its immense size, dagger-like teeth and sharp claws, Tyrannosaurus rex was a fearsome predator that once terrorised North America. Now researchers studying its fossils have suggested the beast may not have been the only tyrannosaurus species.Experts studying remains thought to belong to T rex have suggested their variation shows evidence of not one species but three.Continue reading...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Dinosaurs Evolution Fossils Science Biology Zoology UK news US news World news Source Type: news
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