Fossil Small 215×320 Medium 430×640 Large 689×1024 Download Tiff Original 1614×2400 | (868.0 KB) Description This illustration shows the ancient fossile of an amphibian. Fossils are the mineralized or otherwise preserved remains or traces of animals, plants, and other organisms. Keywords amphibian, fossil, fossilized, Fossils Galleries Amphibian Anatomy Source: Frank Leslie, The Kingdom of Nature, an Illustrated Museum of the Animal World (Chicage: Thompson & Thomas, 1900) 21
