Scientists have discovered the oldest known animal with saber teeth: a predator that lived 270 million years ago. This animal, from before the age of the dinosaurs, was a dog-like creature that was ...

"We have other fish from the same locality with chunks missing from ... also found triangular teeth with serrated edges on bones that lie along the side of the lower-jaw. The international team ...

Details about the juvenile Tyrannosaurus rex fossil discovered by three boys in North Dakota are beginning to take shape, including its size, age and how its body worked.