Gaff, Jackie.

I wonder why fish grew legs : and other questions about prehistoric life / Fish grew legs Jackie Gaff. - Pleasantville, N.Y. : Reader's Digest Young Familes Inc., 2001. - 32 p. : col. ill. ; 29 cm. - I wonder why . - I wonder why (Pleasantville, N.Y.) .

Includes index.

Taking as its starting point a child's desire to understand the world, this book focuses on prehistory, asking questions such as, When did life on earth begin? What killed the dinosaurs? When were elephants as small as pigs?

Subjects--Topical Terms:
Paleontology.
Animals, Fossil.
Children's questions and answers.

Dewey Class. No.: 560