Earliest-known mammal, identified by its fossilized teeth, was digging burrows while dinosaurs were still evolving
This 'shrew-like' animal is surprisingly old.
This 'shrew-like' animal is surprisingly old.
A genetic fluke two to three million years ago turned humans into the best endurance runners around.
Studying the fossil remains of an ancient reptile-like creature, paleontologists gained valuable clues and insights that help explain how turtles ...