Skeleton of <i>Ceratosaurus</i>, a theropod dinosaur.
O.C. Marsh (1831–1899)
1896
Originally from O. C. Marsh's book, <i>The Dinosaurs of North America</i>; found in <a rel="nofollow" class="external autonumber" href="http://www.copyrightexpired.com/earlyimage/bones/display_marsh_ceratosaurus.htm">[1]</a>).