Edmontosaurus tooth row Quetzalcoatlus Though the shell design provided

Though the shell design provided less protection

Crinoids are commonly referred to as "sea lilies

forming four tubes

This fossil can be seen at the Sternberg Museum of Natural History in Hays Kansas

in what has been designated the Cradle of Humankind World Heritage Site

Edmontosaurus tooth row Quetzalcoatlus Though the shell design providedEdmontosaurus was a large bipedal plant eater common in North America during the late Cretaceous. It is one of the best known duckbilled dinosaurs (hadrosaurus) characterized by a particular denture formed by batteries of hundreds of small lozenge like teeth which it used for pulverizing its tough plant foods. Edmontosaurus was up to 39 feet long and 16 feet tall. The teeth in the skull were arranged in the form of dental batteries in the posterior