| McKay Formation | |
|---|---|
| Stratigraphic range: Tortonian-Zanclean (Hemphillian) ~10.3–4.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Formation |
| Lithology | |
| Primary | Tuffaceous sandstone |
| Location | |
| Coordinates | 45°30′N 118°48′W / 45.5°N 118.8°W / 45.5; -118.8 |
| Approximate paleocoordinates | 45°24′N 116°06′W / 45.4°N 116.1°W / 45.4; -116.1 |
| Region | Umatilla County, Oregon |
| Country |  United States |
| Type section | |
| Named for | McKay Reservoir |
  McKay Formation (the United States)Show map of the United States McKay Formation (Oregon)Show map of Oregon | |
The McKay Formation is a geologic formation in Oregon. It preserves fossils dating back to the Tortonian to Zanclean stages (Hemphillian) of the Neogene period.
Fossil content
The following fossils have been reported from the formation:
Mammals
- Rodents
- Cricetidae
- Aplodontidae
- Sciuridae
- Eomyidae
- Geomyidae
- Perognathinae indet.
- Dipodomyinae indet.
- Heteromyidae
- Castoridae
- Mylagaulidae
- Zapodidae
- Leporidae
- Ochotonidae
- Lipotyphla
- Perissodactyla
- Carnivora
- Proboscidea
- Artiodactyls
Birds
See also
References
- ^ McKay Formation at Fossilworks.org
- McKay Formation at USGS
- McKay Formation publications at USGS
- Shotwell, 1956
Bibliography
- Shotwell, J. A (1956). "Hemphillian mammalian assemblage from northeastern Oregon". Geological Society of America Bulletin. 67 (6): 717. Bibcode:1956GSAB...67..717S. doi:10.1130/0016-7606(1956)67[717:HMAFNO]2.0.CO;2.