Here's why that's important: About 200 million years ago, Earth had just one giant land mass called Pangea.
C, hunting peoples had occupied most of North America, south of the glacial ice cap covering the northern part of North America.
These men hunted such large grazing mammals as mammoth, mastodon, horse, and camel.
It has been widely accepted that groups of peoples entered the American hemisphere from northeastern Siberia, perhaps by a land bridge across the Bering straits of Alaska that might have existed then, (This at some time in the Late Pleistocene, or Ice Age).
There is already abundant evidence that by 11,000 B.
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.
The rooster-sized dinosaur is called Buitreraptor (bwee-tree-rap-tor) gonzalezorum.
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.
By Gisela Crespo, CNN, April 26, 2017 The remains of a mastodon discovered during a routine excavation in California shows possible human activity in North America 130,000 years ago -- or about 115,000 years earlier than previously thought.
Paleontologists with the San Diego Natural History Museum discovered the remains of the elephant-like animal more than 20 years ago.
Buitreraptor is related to Velociraptor, the presumed cunning killer made famous by Hollywood.