They Want to Break T. Rex Into 3 Species. Paleontologists Aren’t Pleased. - The New York Times

The premise, put forth in a new paper, highlights an assortment of tensions in dinosaur paleontology, including how subjective the naming of species can be.

They found some of the specimens difficult to classify. But 26 seemed to group into three types, Mr. Paul said: one robust form from early in the Hell Creek with two sets of incisors in its lower jaw… [+1982 chars]

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