Chalk, limestone, shale, and sandstone are all examples of sedimentary rocks. All these different sedimentary rocks are formed from the broken remains of other rocks that become joined together.

Who changed the “Rah! Rah!” to “Rock Chalk” is unknown, but Bailey indicated it might have been fellow scientists at KU, in a reference to the limestone that is found in the area.

Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers of sediment build up on top of one another, they create a physical timeline. The oldest layers, ...