The Runningwater Formation is a geologic formation in Nebraska. It preserves fossils dating back to the Hemingfordian of the Early Miocene of the Neogene period. The sandstones and conglomerates of the formation were deposited in a fluvial environment. The formation has provided many fossil mammals.

Fossil content

Among the following fossils have been found in the formation:

Mammals

Reptiles

See also

Bibliography

  • Hunt Jr, Robert M.; Yatkola, Daniel A. (2020), , Geodiversitas, 42 (5): 57–67, doi: