Prehistoric Fossils at Slawson Hall
History comes to life at KU's Earth, Energy and Environment Center (EEEC) with the addition of two fossils hanging in the Slawson Hall’s atrium: A mosasaur chasing a sea turtle.
About the Mosasaur and Sea Turtle
View the Fossil Display Process
KU’s new Earth, Energy and Environment Center (EEEC) is coming to life with the addition of two fossils hanging from Slawson Hall’s atrium: A mosasaur chasing a sea turtle.
Mosasaur (Tylosaurus proriger)
Mosasaur fossil from the Cretaceous Niobrara Formation (~82 million years old), collected in Logan County, Kansas. Tylosaurus is the state fossil of Kansas. This specimen was discovered in 1911 by C.D. Bunker and his associates, and now resides at the KU Natural History Museum. It is 45 feet long and known as one of the largest complete mosasaur fossils in existence. Mosasaurs were the top predators of the Cretaceous seas of Kansas. They went extinct at the end of the Cretaceous along with the dinosaurs and many other organisms. They are most closely related to modern monitor lizards and snakes.