A bizarre fossil called Prototaxites, which was the largest life-form on land 400 million years ago, may have been a completely unknown form of multicellular life, according to a new study.

Using the fossil record and modern cold-blooded critters, paleontologist Kelsey Jenkins recreates the hearing capabilities of ...

Until now, estimating how old a dinosaur was when it died has been a fairly simple process: Count up the growth rings in the ...