The Ogallala Formation is a Miocene to Pliocene geologic unit in the western United States. The Ogallala Formation outcrops of Lake Meredith National Recreation Area preserve fish fossils. Similar specimens from the same formation are found at Alibates Flint Quarry National Monument in Texas.
- "Lake Meredith National Recreation Area," Hunt, Santucci, and Kenworthy (2010); page 67.
- Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69.