The Invertebrate Paleontology collections of Cincinnati Museum Center are maintained to supplement and complement the major invertebrate fossil collections in North American museums and universities. On national and international levels, CMC houses one of the best collections of Upper Ordovician fossils, focusing on the uniqueness of the Cincinnati paleogeographic area. To serve the broader needs, the department cares for additional invertebrate fossil collections that focus on other geologic time periods from the American mid-continent/Ohio Valley, particularly the tri-state region. The collection does contain specimens from all over the world and through most of the Phanerozoic Eon. The dataset contains taxonomic, geographic, and stratigraphic data for over 60,000 specimen lots of major invertebrate phyla.