Edmontosaurus mummy SMF R 4036

The Edmontosaurus mummy SMF R 4036, nicknamed the Senckenberg mummy or Edmond, is an exceptionally well-preserved dinosaur fossil in the collection of the Senckenberg Museum (SMF) in Frankfurt am Main, Germany. It was found in 1910 in Wyoming, United States, in rocks of the Lance Formation that date to the late Maastrichtian, close to the Cretaceous–Paleogene extinction event around 66 million years ago. The mummy is ascribed to the species Edmontosaurus annectens, a member of the Hadrosauridae. It comprises a nearly complete skeleton that was found wrapped in skin impressions, a rare case of preservation for which the term dinosaur mummy has been used. The fingers of the right hand are wrapped in a mitten-like envelope of skin impressions, initially interpreted as a paddle unsuited for terrestrial locomotion, thereby reinforcing the now outdated hypothesis that hadrosaurs were aquatic. The impression of a horny beak is also preserved with this specimen. Plant remains found in the body cavity were interpreted as stomach contents, indicating a diet of terrestrial plants. It is now believed that this plant material was washed into the body cavity of the carcass.