Description

Late Cretaceous

Hell Creek Formation

Harding County, SD, USA

Fine 0.25 inch shed juvenile Hadrosaur tooth! Unusual!

Dinosaur, Hadrosaur.

Edmontosaurus was one of the largest of the “duckbills” and it lived during the last few million years of the Cretaceous.  When I was a kid, scientists called it “Trachodon” and then they thought the genus was “Anatosaurus.”  A few other names have been given to material that turned out to be the same genus and Edmontosaurus was the one deemed to be the senior synonym, the first, best-supported name.