But the ostrich gave up on flight long ago in favor ... and weighed around 70 kilograms (154 pounds)—making it the largest flying bird to ever exist. Scientists believe it flew much like modern ...
An ancient species of giant flying squirrel was found in a sinkhole lake fossil site in eastern Tennessee. Photo by Dan ...
Now, they are adding giant flying squirrels to the picture. Researchers discovered a partial fossil of a giant flying squirrel estimated to be about 5 million years old at the Gray Fossil Site at ...
An ancient species of giant flying squirrel was found in a sinkhole lake fossil site in eastern Tennessee. Photo by Dan Meyers via Unsplash Scientists had an idea of what prehistoric Appalachia ...