Call them "mudpuppies," "hellbenders," or "mud eels," salamanders are puzzling animals to most people. They come in forms that look like flattened fish with legs, like eels, like slimy lizards, or like lizards with toad-like skins. Their life history imitates the ancient evolutionary transition from aquatic to terrestrial vertebrates, though several groups remain permanently aquatic. Until now, no one has written about their ancient ancestors. Holman details the process of the identification and interpretation of the fossils. He presents a detailed systematic account of the known fossil...

Did you know . . . ?

• Michigan is seventeenth in oil production in the United States.
• The Great Lakes are said to be the only glacially produced structures that can be seen from the moon.
• Michigan was once part of a coral reef.
• The wood frog is one of the commonest true frogs of moist woodland floors in Michigan today and is able to freeze solid during the winter without harmful effects.

These and many more amazing facts await the curious traveler in The Michigan Roadside Naturalist, J. Alan and Margaret B. Holman's captivating guide to...