Five million year old rabbit fossils found on the island of Minorca were six times the size of today’s rabbits.
In 2019 two American researchers reported discovering the fossil remains of a carnivorous mammal larger than a modern lion, and even larger than a prehistoric saber-toothed tiger. It lived 22 million years ago in what’s now Africa.
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.