Jurassic Frog

The earliest known frog appeared during the late Jurassic period, about 190 million years ago! Scientists believe that the oldest frogs developed jumping legs to avoid being eaten by dinosaurs.

Specimens on the first known frogs have been found on Navajo Indian reservations in Arizona. Fossils of meat-eating fish and reptiles such as dinosaurs have also been found at the same site.

These fossils show that the skeletal shape and body plan of the frog has remained almost unchanged over the last 190 million years. In addition, frogs had the added advantage of being small enough to be able to hop away to avoid the many predators which habitated its surroundings."