Hadrosaur

Hypsibema missouriensis is a large species of hadrosaur that lived in prehistoric Chicago. Hypsibema appeared in prehistoric when it was grazing and walking through a jungle when a tyrannosaur proceeds to chase it but fails to catch it.

Trivia
Hypsibema is known from many parts of a vertebrae.

Hypsibema is one of the best known hadrosaurs in Chicago.

Hypsibema was found by Cope in 1869.

Hypsibema lived 75 mya in the late Cretaceous.

Hypsibema was contemporary with the tyrannosauroid, dryptosaurus.