Pterodactyls glide above a soggy marsh. Nearby, a colossal 80-ton Brachiosaurus munches on a tree. Ichthyostega, prehistoric predecessor to the modern frog, lived 370 million years ago during the Devonian Period. Illustration by Khristine A. Page.
Few people realize just how ancient frogs are.
The secret to their success is their amazing adaptability. As amphibians, frogs have one webbed foot in each of two worlds. Dive into the water. Hop out and see what they're serving on shore. Frogs have evolved to live in an astounding variety of climates.