Plaster cast

Garrett Guillot, 10, poses for a portrait with a plaster cast of a bobcat paw print and a model dinosaur at his home in Nederland on Thursday, April 27, 2006. He got the cast as a gift from his teacher during last summer's Discovery program at Lamar State College - Port Arthur, where he learned about trace fossils like the paw print.

Mark M. Hancock / © The Beaumont Enterprise