by Earle Spamer and Richard McCourt

These pages are funded in part by a grant from the National Park Service, Challenge-Cost Share Program.

Imagining the Beast Jefferson's Megalonyx No Extinction Fossils Alive? Lewis as Student Peale's Mammoth Picture Pleistocene Boneyard Rocks and Fossils Missing Fossils Georges Buffon Georges Cuvier Richard Harlan Caspar Wistar Earle E. Spamer Richard M. McCourt