Friday, November 26, 2021

A New Species?

 From Smithsonian:

Around a year ago, a Canyonlands park ranger stumbled across the fossil and reported it to the park. Then, scientists from the Natural History Museum of Utah, Petrified Forest National Park and the University of Southern California teamed up to dig into this discovery. They filed for a research permit and excavated the fossil last month, reports CNN.

"This is cool, because it’s 50 million years older than the oldest dinosaur fossil," Marsh tells the Deseret. "So it’s kind of cool that it’s from a period in Earth’s history where we just don’t have a lot of fossils from in North America especially.”

This creature existed between the Pennsylvanian Period (323.2 to 298.9 million years ago) and the Permian (298.9 to 251.9 million years ago). During the Pennsylvanian era, plants started to colonize dry land by way of more evolved seeds; animals did so through the evolution of the amniotic egg, in which the embryo develops inside a shell, like with birds and reptiles. In the Permian, the planet's continents started to squish together to form the supercontinent Pangea, and the era ended with the largest mass extinction in Earth's history. (Read more.)


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