Runningwater Formation
Runningwater Formation Stratigraphic range: Early Miocene (Hemingfordian) ~ | |
---|---|
Type | Formation |
Lithology | |
Primary | Sandstone |
Other | Conglomerate |
Location | |
Coordinates | 42°24′N 103°00′W / 42.4°N 103.0°WCoordinates: 42°24′N 103°00′W / 42.4°N 103.0°W |
Approximate paleocoordinates | 43°06′N 99°06′W / 43.1°N 99.1°W |
Region | Nebraska |
Country | United States |
Runningwater Formation (the United States) Runningwater Formation (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
- Cynarctoides acridens
- Cynelos stenos[2]
- Diceratherium niobrarense
- Daphoenodon (Borocyon) robustum
- Desmocyon thomsoni
- Hypertragulus minor
- Menoceras barbouri
- Merychyus arenarum, M. elegans
- Metatomarctus canavus
- Osbornodon iamonensis
- Anchitheriomys stouti
- Desmatippus tyleri
- Amphicyon galushai
- Leptocyon vulpinus
- Tephrocyon scitulus
- Merycochoerus proprius
- Reptiles
- Macrochelys schmidti
- Rhineura marslandensis
- Sceloporus sp.
See also[]
References[]
- ^ Runningwater Formation at Fossilworks.org
- ^ Hunt & Yatkola, 2020
Bibliography[]
- A new species of the amphicyonid carnivore Cynelos Jourdan, 1862 from the early Miocene of North America. Geodiversitas 42. 57–67. doi:10.5252/geodiversitas2020v42a5 , and . 2020.
Categories:
- Geologic formations of Nebraska
- Neogene geology of Nebraska
- Miocene Series of North America
- Hemingfordian
- Aquitanian (stage)
- Burdigalian
- Sandstone formations of the United States
- Conglomerate formations
- Fluvial deposits
- Fossiliferous stratigraphic units of North America
- Paleontology in Nebraska
- Box Butte County, Nebraska
- Dawes County, Nebraska