McKay Formation

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 Antecalomys cf. valensis Basirepomys pliocenicus Copemys esmeraldensis Peromyscus antiquus Prosomys mimus
• Aplodontidae Liodontia sp.
• Sciuridae Parapaenemarmota oregonensis Spermophilus mckayensis S. wilsoni Neotamias sp.
• Eomyidae Leptodontomys oregonensis
• Geomyidae Parapliosaccomys oregonensis
• Perognathinae indet.
• Dipodomyinae indet.
• Heteromyidae Oregonomys sargenti
• Castoridae Castor sp. Dipoides smithi
• Mylagaulidae Hesperogaulus wilsoni
• Zapodidae Pliozapus solus
• Leporidae Hypolagus oregonensis
• Ochotonidae Ochotona spanglei

Lipotyphla

• Talpidae Gaillardia thomsoni ?Neurotrichus columbianus Scapanus cf. proceridens Scapanus sp. ?Scalopoides sp.

Perissodactyla

• Rhinocerotidae Teleoceras hicksi
• Equidae Hipparionini indet.

• Chiroptera indet.

Carnivora

• Mustelidae Plesiogulo marshalli Pliotaxidea nevadensis Mustela sp.
• Canidae Epicyon saevus Eucyon davisi
• Felidae Lynx longignathus Nimravides catocopis

Proboscidea

• Mammutidae ?Mammutidae indet.

Artiodactyls

• Tayassuidae Platygonus brachirostris
• Camelidae Camelidae indet.

Birds

• Scolopacidae Bartramia umatilla
• Odontophoridae Callipepla shotwelli
• Anatidae Nettion bunkeri

See also

• List of fossiliferous stratigraphic units in Oregon
• Paleontology in Oregon

Bibliography

• Shotwell, J. A (1956). "Hemphillian mammalian assemblage from northeastern Oregon". Geological Society of America Bulletin. 67 (6): 717. Bibcode:. doi:.