Scientists Find Earliest Known Penis

Possibly the world's oldest penis — over 100 million years old — was found on a recently discovered fossil of an ostracod, an early crustacean, related to crabs, shrimps, and water fleas, according to NewScientist.com and Reuters.

"To my knowledge, it is the oldest penis. I don't know of any older," said Professor David Siveter, of the University of Leicester in England.

Siveter was presenting his research on the fossil, found in Brazil, to the British Association Festival of Science.