An illustration of the Late Pleistocene beast Rusingoryx atopocranion, which curiously has the same type of hollow-dome crest as the duck-billed dinosaur. Credit: Todd S. Marshall | http://www.marshalls-art.com

An illustration of the Late Pleistocene beast Rusingoryx atopocranion, which curiously has the same type of hollow-dome crest as the duck-billed dinosaur.
Credit: Todd S. Marshall | http://www.marshalls-art.com