Diplocynodon is an extinct 49 million year old crocodile from the Messel Formation of Germany. The Order Crocodilia has existed for about 200 million years. It is believed that crocodiles originated from bipedal reptiles that lived during the Late Triassic Period. Crocodiles are the only surviving members of the Superorder Archosauria which included dinosaurs and pterasaurs. Crocodiles have changed very little throughout their history. There are eight surviving genera of Crocodilians alive today. At the Messel quarry in Germany, six distinct genera of Crocodilians can be recognized. This replica represents the Genus Diplocynodon. The Messel quarry, near Frankfurt, Germany is world renowned for the near-perfect preservation of the fossils that it yields. For over 100 years the Messil site had been mined for its oil shale, or "brown coal" as it is commonly called. About 49 million years ago, during the Middle Eocene Epoch, the Messel area was a swampy fresh water lake environment with a rich and diverse flora and fauna. Seasonal blooms of algae in the lakes at Messel would cause the water to be foul and stagnant. If an animal died and fell into the water, its carcass could lay unscavanged and undisturbed in the oxygen-depleted lake bottom. A fine mist of dead algae would cover the organism and preserve it in fine layers of shale. The result is unparalleled preservation of things seldom preserved such as fur, feathers, and gut contents. Dimensions: 15-1/8" x 7-1/4" x 1"