The following picture shows a very large Isotelus trilobite in a display area for Ordovician Period fossils.
This model of a maybe an Ordovician or Silurian Period sea scorpion called an Eurypterid.
This next picture shows fossils from Indiana's Mississippian Period. Look at the size that fan shaped sponge!
This Mississippian Period display area shows numerous examples of the world famous Crawfordsville crinoid fossils.
This last display in the invertebrate fossil area is of fossils found in the Pennsylvanian Period areas of Indiana.
Next to the fossil area is a Foucault pendulum which proves that the earth is rotating. At this point, I was not aware of its name but a helpful museum volunteer educated me about this device. As it turns out, the Louisville Science Center has one as well but since I do not volunteer in the lobby area, I never studied it. One thing I was most impressed with at the Indiana State Museum was the quality of their volunteers. They were knowledgeable, friendly, helpful, and very good at promoting their museum.
This last image is of a Mastodont skeleton found buried on an Indiana farm.
The rest of this very large museum was full artifacts from human occupation of Indiana and how they shaped the history of the state of Indiana. If you get a chance, I strongly recommend a visit if in the Indianapolis, Indiana area.