High Rock Canyon (Miocene of the United States)

Also known as UCMP V-1107
DUPLICATE REF 3234 or 3235

Where: Humboldt County, Nevada (41.1° N, 117.8° W: paleocoordinates 41.8° N, 114.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial

Reposited in the UCMP

Primary reference: R. A. Stirton. 1940. The Nevada Miocene and Pliocene mammalian faunas as faunal units. Proceedings of the Sixth Pacific Science Congress 2:627-640 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 18922: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rodentia - Mylagaulidae
Mylagaulidae indet.1 Cope 1881 rodent
 Perissodactyla - Chalicotheriidae
Moropus merriami2 Holland and Peterson 1913 chalicothere
 Perissodactyla - Rhinocerotidae
Aphelops sp. Owen 1845 rhinoceros
confirmed by Munthe and Coombs 1979 DUPLICATE REF 3234 or 3235
 Perissodactyla - Equidae
Merychippus close horse
small form of Merychippus close to gunteri DUPLICATE REF 3234 or 3235
Merychippus californicus Merriam 1915 horse
confirmed by Downs 1961 DUPLICATE REF 3234 or 3235
Merychippus cf. brevidontus Bode 1935 horse
DUPLICATE REF 3234 or 3235
Desmatippus cf. avus1 Marsh 1874 anchitheriine horse
Hypohippus sp. Leidy 1858 anchitheriine horse
DUPLICATE REF 3234 or 3235
 Carnivora - Ursidae
Ursavus pawniensis3 Frick 1926 bear
"High Rock Canyon 2, Washoe County"
 Carnivora - Amphicyonidae
Amphicyoninae indet. Trouessart 1885 bear-dog
DUPLICATE REF 3234 or 3235
 Carnivora - Canidae
Metatomarctus sp.6 Wang et al. 1999 bone-crushing dog
two forms, A and B; "Tomarctus cf. optatus" and Stirton's second form of "Tomarctus"
 Proboscidea - Mammutidae
? Zygolophodon sp.1 Vacek 1877 mastodon
 Ungulata - Merycoidodontidae
Ticholeptus zygomaticus4 Cope 1878 oreodont
presumably "? Merychyus sp."; said to be from UCMP 3603, which is actually in the Orinda Fm.
Brachycrus sp.1 Matthew 1901 oreodont
 Ungulata - Camelidae
Camelidae indet. Gray 1821 camel
DUPLICATE REF 3234 or 3235
 Ungulata - Palaeomerycidae
Dromomerycinae indet.1 Frick 1937 ruminant
 Ungulata - Antilocapridae
Paracosoryx nevadensis1 Merriam 1911 pronghorn
 Ungulata - Moschidae
"Blastomeryx mollis" = Problastomeryx primus5
"Blastomeryx mollis" = Problastomeryx primus5 Matthew 1908 musk deer