Wikieup (Neogene of the United States)

Also known as Bird Bone Quarry; CIT 460; Clay Bank Quarry (= Grey's Ranch); Concretion Quarry; Horseshoe Quarry; Split Cliff Quarry; UALP 2; Ward's Prospect

Where: Mohave County, Arizona (34.7° N, 113.4° W: paleocoordinates 35.1° N, 111.8° W)

• coordinate based on political unit

When: Big Sandy Formation, Late/Upper Hemphillian (10.3 - 4.9 Ma)

Environment/lithology: terrestrial

Primary reference: B. J. MacFadden, N. M. Johnson, and N. D. Opdyke. 1979. Magnetic polarity stratigraphy of the Mio-Pliocene mammal-bearing Big Sandy Formation of western Arizona. Earth and Planetary Science Letters 44(3):349-364 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 19612: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• average of three FT on zircon dates is 5.5 +/- 0.2 Ma; correlation with 5N (= C & K 92 C3An.1n) is probably correct, but if so the FT date should be 6.23 Ma (13% older) and the fauna (from the succeeding normal interval) is 5.83 Ma; alternatively, the FT date should be 4.93 Ma (10% younger), which seems very implausible
"Canis cf. lepophagus" mentioned in text but omitted from faunal list
 Glires -
 Lagomorpha - Leporidae
Hypolagus tedfordi7 White 1988 rabbit
 Perissodactyla - Equidae
Dinohippus leidyanus2, "Onohippidium galushai" = Boreohippidion galushai
Dinohippus leidyanus2 Osborn 1918 horse
skull from Grey's Ranch Quarry, Wikieup; no Dinohippus listed by MacFadden et al., but this is an F:AM specimen they may have overlooked
"Onohippidium galushai" = Boreohippidion galushai MacFadden and Skinner 1979 horse
see MacFadden 1997: "Pliohippus or Dinohippus" of Alberdi and Prado 1992; Clay Bank and Bird Bone Qs.
 Carnivora - Ursidae
Agriotherium sp.1 Wagner 1837 bear
 Carnivora - Procyonidae
Procyonidae indet.1 Gray 1825 procyonid carnivore
 Carnivora - Mustelidae
Mustelidae indet. Fischer 1817 mustelid carnivore
said to be a new badger genus
Martes sp. Frisch 1775 marten
Plesiogulo lindsayi4 Harrison 1981 mustelid carnivore
Pliogale furlongi Merriam 1911 skunk
Pliotaxidea cf. nevadensis Butterworth 1916 badger
 Carnivora - Canidae
Vulpes stenognathus Savage 1941 fox
Eucyon davisi1 Merriam 1911 canine
Canis ferox5 Miller and Carranza-Castaneda 1998 canine
Bird Bone Quarry;Clay Bank Quarry;Gray’s Ranch Quarry stratum 3;
Borophagus parvus6 Wang et al. 1999 bone-crushing dog
Clay Bank Quarry; Bird Bone Quarry; Gray Ranch Quarry; "Osteoborus sp."
 Carnivora - Felidae
"Pseudaelurus" sp. Leidy 1858 cat
said to be new
"Machairodus coloradensis" = Amphimachairodus coloradensis Cook 1922 cat
Adelphailurus kansensis Hibbard 1934 cat
 Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922 gomphothere
 Ungulata - Camelidae
Megatylopus matthewi Webb 1965 camel
"Hemiauchenia vera" = Pleiolama vera Matthew 1909 camel
according to Breyer 1983, Hemiauchenia is present at Claybank Q. and Bird Bone Q.
Alforjas sp.3 Harrison 1979 camel
"protolabine new genus" and "'Camelops'-like new genus"; from Claybank Q. and Bird Bone Q.
 Ungulata - Antilocapridae
Antilocapridae indet. Gray 1866 pronghorn
said to be new
? Texoceros minorei Frick 1937 pronghorn
Sphenophalos nevadanus Merriam 1909 pronghorn