Runningwater Formation
Geologic formation in Nebraska, US
Runningwater Formation | |
---|---|
Stratigraphic range: Early Miocene (Hemingfordian) ~20.6–16.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
Type | Formation |
Lithology | |
Primary | Sandstone |
Other | Conglomerate |
Location | |
Coordinates | Runningwater Formation (the United States) Show map of the United StatesRunningwater Formation (Nebraska) Show map of Nebraska |
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:[1]
- Mammals
- Aletomeryx gracilis
- Arretotherium fricki
- Barbouromeryx trigonocorneus
- Cynarctoides acridens
- Cynelos stenos[2]
- Diceratherium niobrarense
- Daphoenodon (Borocyon) robustum
- Desmocyon thomsoni
- Hypertragulus minor
- Menoceras barbouri
- Merychyus arenarum, M. elegans
- Metatomarctus canavus
- Osbornodon iamonensis
- Pseudoblastomeryx advena
- Anchitheriomys stouti
- Desmatippus tyleri
- Edaphocyon lautus
- Amphicyon galushai
- Craterogale cf. simus
- Leptarctus cf. ancipidens
- Leptocyon vulpinus
- Tephrocyon scitulus
- Merycochoerus proprius
- Reptiles
See also
References
- ^ Runningwater Formation at Fossilworks.org
- ^ Hunt & Yatkola, 2020
Bibliography
- Hunt Jr, Robert M.; Yatkola, Daniel A. (2020), "A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America", Geodiversitas, 42 (5): 57–67, doi:10.5252/geodiversitas2020v42a5