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.[1][2][3]
| McKay Formation | |
|---|---|
| Stratigraphic range: Tortonian-Zanclean (Hemphillian) ~ | |
| Type | Formation |
| Lithology | |
| Primary | Tuffaceous sandstone |
| Location | |
| Coordinates | 45°30′N 118°48′W / 45.5°N 118.8°W |
| Approximate paleocoordinates | 45°24′N 116°06′W / 45.4°N 116.1°W |
| Region | Umatilla County, Oregon |
| Country |  United States |
| Type section | |
| Named for | McKay Reservoir |
  McKay Formation (the United States)  McKay Formation (Oregon) | |
Fossil content
edit
The following fossils have been reported from the formation:[1][4]
Mammals
edit- Rodents
- Cricetidae
- Aplodontidae
- Sciuridae
- Eomyidae
- Geomyidae
- Perognathinae indet.
- Dipodomyinae indet.
- Heteromyidae
- Castoridae
- Mylagaulidae
- Zapodidae
- Leporidae
- Ochotonidae
- Lipotyphla
- Perissodactyla
- Carnivora
- Proboscidea
- Artiodactyls
Birds
editSee also
editReferences
edit- ^ a b McKay Formation at Fossilworks.org
- ^ McKay Formation at USGS
- ^ McKay Formation publications at USGS
- ^ Shotwell, 1956
Bibliography
edit- 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.