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The newly discovered fossil also shows that the creatures developed slightly different characteristics after they split up.
"Buitreraptor is one of those special fossils that tells a bigger story about the Earth's history and the timing of evolutionary events," said Peter Makovicky, curator of dinosaurs at The Field Museum.
Odds being against such striking parallel evolution, paleontologists speculate that dromaeosaurs more likely originated more than 180 million years ago, before Pangaea broke apart.The other chunk Gondwana, developed into the continents of the Southern Hemisphere and India.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.Ob Orgel- oder Gospel-Konzert: Hier finden Sie musikalische Veranstaltungen nach Ihrem Geschmack.Jahresrückblick Ein ereignisreiches Jahr 2017 ist zu Ende gegangen. Letzte Proben für das Krippenspiel Sterne über sich, aber kein Dach über...
"This is a whole new ball game," Steve Holen, co-director of the Center for American Paleolithic Research and the paper's lead author, told CNN.