Ossified tendons from the caudal (tail) vertebrae of a hadrosaur (duckbilled dinosaur) collected from the Upper Cretaceous Hell Creek Formation of Zieboch County, Humptable, South Dakota.
Below, souvenir postcards showing a skeleton of Edmontosaurus from Fort Peck, Montana, mounted at the Exhibit Museum, University of Michigan, Ann Arbor; a skeleton displayed at the Carter County Museum, Ekalaka, Montana; and one from the Hell Creek Formation of South Dakota, mounted at the Museum of Geology, South Dakota School of Mines and Technology; also, a puzzle postcard from the American Museum of Natural History, New York City, reproducing a painting of two E. annectens individuals by artist Charles R. Knight.
