Arroyo Tepalcates (Neogene of Mexico)

Also known as GTO-52

Where: Guanajuato, Mexico (21.0° N, 100.7° W: paleocoordinates 21.3° N, 99.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Rancho Viejo Beds Formation, Late/Upper Hemphillian (10.3 - 4.9 Ma)

• from close to the base of the Rancho Viejo section, in the Rancho Viejo Beds and not the "San Miguel Allende Beds," and immediately underlies a magnetic polarity reversal of uncertain correlation (Flynn et al. 2005)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; lithology not reported

Size class: macrofossils

Primary reference: O. Carranza-Castaneda and W. E. Miller. 1996. Hemphillian and Blancan felids from central Mexico. Journal of Paleontology 70(3):509-518 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18713: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Rhinocerotidae
? Teleoceras fossiger1 Cope 1878 rhinoceros
 Perissodactyla - Equidae
Neohipparion eurystyle1 Cope 1893 hipparionine horse
Dinohippus mexicanus1 Lance 1950 horse
"Astrohippus stocki" = Astrohippus stockii1 Lance 1950 horse
 Artiodactyla - Camelidae
"Hemiauchenia vera" = Pleiolama vera1 Matthew 1909 camel
? Alforjas sp.1 Harrison 1979 camel
Megatylopus matthewi1 Webb 1965 camel
 Artiodactyla - Antilocapridae
Hexobelomeryx fricki1 Furlong 1941 pronghorn
 Artiodactyla - Tayassuidae
"Catagonus brachydontus" = Desmathyus brachydontus1
"Catagonus brachydontus" = Desmathyus brachydontus1 Dalquest and Mooser 1980 peccary
 Carnivora - Ursidae
"Agriotherium schneideri" = Huracan schneideri1
"Agriotherium schneideri" = Huracan schneideri1 Sellards 1916 bear
 Carnivora - Mustelidae
? Taxidea mexicana1 Drescher 1939 badger
 Carnivora - Felidae
Amphimachairodus cf. alvarezi2 Ruiz-Ramoni et al. 2019 cat
 Carnivora - Canidae
"Canis ferox" = Eucyon ferox1, Borophagus secundus1
"Canis ferox" = Eucyon ferox1 Miller and Carranza-Castaneda 1998 canine
Borophagus secundus1 VanderHoof 1931 bone-crushing dog
 Proboscidea - Gomphotheriidae
Rhynchotherium sp.1 Falconer 1868 gomphothere