Scientists are still trying to figure out why ancient lizards evolved into snakes.
Ancient fish that had evolved better eyesight may have hunted like crocodiles.
Have turtles always been able to retract their heads into their shells?
What was nearly five feet tall, gray and rust colored and ate fish?
It's amazing what ancient teeth can tell us about the past.
What are the benefits of being a multicellular organism?
In 2004, a fossil hunter found what looked like a brown pebble. Years later, scientists proved it was part of a fossilized dinosaur brain.
The first mass extinction happened approximately 540 million years ago.
All land vertebrates evolved from fish, and Acanthostega—the fossil of a part-fish, part-amphibious creature—pinpoints how we made the leap from water to earth.
Archaeologists discover the fossil of a monstrous rodent that lived eight million years ago.