Pterodactyl Small 320×242 Medium 640×483 Large 1024×774 Download Tiff Original 2400×1813 | (516.5 KB) Description A remarkable genus of fossil lizards, peculiar to the Mesozoic strata. Its anomalous structure was long a puzzle to comparative anatomists. Keywords dinosaur, fossil, lizard, Pterodactyl, Pterosauria, skeleton Galleries Dinosaurs Source: George J Hagar, The Standard American Encyclopedia (New York: The University Society Inc., 1916)