The Orton Geological Museum houses type and figured specimens from many of the original paleontological investigations of the geology and paleontology of Ohio. These include specimens from the works of James Hall, Grace Anne Stewart, and many others.
Through the long-standing research programs of Walter C. Sweet, Stig M. Bergstrom and their students the Orton Geological Museum holds extensive conodont collections from around the world. The collections are comprehensive, but have an emphasis on the Ordovician and Triassic. Type and figured specimens as well as stratigraphic collections are present.
Cretaceous-Paleocene Boundary Ammonites from Seymour Island, Antarctica
This unique collection of ammonites leading up to the end-Cretaceous extinction is from the work of Carlos Macellari and contains very well preserved material. These fossils appear in the Paleontological Society Memoir 18, Journal of Paleontology 60(2), supplement.
Pennsylvanian Faunas of the Appalachian Basin
In addition to historic collections, the Museum houses type and figured specimens from much of the monographic work of Richard D. Hoare and Myron T. Sturgeon. In addtion, the Orton Geological Museum collections include two extensive collections Pennsylvanian Period fossils donated by Myron T. Sturgeon and James Murphy. These collections include include excellent stratigraphic and geographic data.
The Orton Geological Museum now includes the material from the former Ohio State Mineralogical Museum, which was a part of the former Department of Mineralogy. This collection contained more than 4612 specimens, and this collections is on a computer database for easy access to teaching, research, and display.
Delong Mineral Collection
Jack Delong received his degree in geology from Ohio State and embarked on a successful career in the petroleum field. He collected minerals for more than 50 years. In 1987 after his retirement, he began sending his collection to the Orton Geological Museum, totaling more than 6,000 specimens. 2,414 of the best specimens are cataloged into the museum, and these are frequently used for teaching, research, and display.