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Legend: Mesoamerica = Mexico and Central America Pre-Columbian = Before Christopher Columbus Amerindian = Indigenous Indians of North and South America Paleoindian/Paleoamerican = The original Black settlers of the Americas The discovery of a bird-like dinosaur in South America has paleontologists rethinking when, where and how one group of raptors evolved.

Its serrated teeth, like steak knives, suggest it was a carnivore.

Since dromaeosaurs had only been found in places that used to be part of Laurasia, scientists figured that the beasts evolved into being after Pangea split.

But the Buitreraptor fossil in South America, which dates back 90 million years and closely resembles fossils from the North, means one of two things: Either dromaeosaurs existed when Pangea was intact; or the newfound Buitreraptor and its northern look-alikes evolved separately yet with remarkably similar results.

But it wasn't until now that scientists were able to accurately date the findings, and possibly rewrite the history of the New World as we know it.