Mayday Quarry (Miocene of the United States)

Where: San Bernardino County, California (34.8° N, 117.0° W: paleocoordinates 34.1° N, 112.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Middle Member (Barstow Formation), Barstovian (16.3 - 12.5 Ma)

Environment/lithology: terrestrial

Primary reference: X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]more details

PaleoDB collection 19432: authorized by John Alroy, entered by John Alroy on 19.05.2000, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• same level as Skyline Quarry: Woodburne et al. 1990
Show authors, comments, and common names
Mammalia
 Carnivora - Amphicyonidae
Ischyrocyon sp.4
Ischyrocyon sp.4 Matthew and Gidley 1904 bear-dog
 Carnivora - Canidae
Protepicyon raki n. sp.1, Paratomarctus temerarius, Microtomarctus conferta
Protepicyon raki n. sp.1 Wang et al. 1999 bone-crushing dog
Paratomarctus temerarius Leidy 1858 bone-crushing dog
Microtomarctus conferta Matthew 1918 bone-crushing dog
 Artiodactyla - Antilocapridae
"Cosoryx (Paracosoryx) alticornis" = Paracosoryx alticornis2
"Cosoryx (Paracosoryx) alticornis" = Paracosoryx alticornis2 Frick 1937 pronghorn
 Perissodactyla - Equidae
Hypohippus affinis3, Megahippus mckennai3, Acritohippus stylodontus5
Hypohippus affinis3 Leidy 1858 anchitheriine horse
Supplemental Table S1
Megahippus mckennai3 Tedford and Alf 1962 anchitheriine horse
Acritohippus stylodontus5 Merriam 1919 horse
Supplemental Table S1
1Alroy 2002; 2Frick 1937; 3Gonzalez and Lofgren 2013; 4Hunt 1998; 5Mihlbachler et al. 2011