Wednesday, October 08, 2014

Tachiraptor admirabilis: a new Theropod From Hetttangian Jurassic Venezuela


A newly described dinosaur, whose fossils are some of the first to be unearthed in Venezuela, turns out to be the close, relatively small kin of creatures that later evolved into multiton meat eaters such as Allosaurus and Tyrannosaurus rex. The creature, and another dinosaur whose fossils were found nearby and reported just 2 months ago, are filling in gaps in the fossil record and revealing new insights into dinosaur evolution in the wake of a mass extinction that happened about 201 million years ago.

The new species, dubbed Tachiraptor admirabilis, is a predator that gets part of its name from the Venezuelan state of Táchira, where the fossils were found. Only two bones of the ancient species have been unearthed, says Max Langer, a vertebrate paleontologist at the University of São Paulo in Brazil. Nevertheless, those bits (each from a different individual, and one of them not even a complete bone) tell scientists a lot, Langer notes.

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