Iron Canyon (Lower) (Miocene of the United States)

Where: Kern County, California (35.3° N, 118.5° W: paleocoordinates 35.2° N, 114.3° W)

• coordinate based on political unit

When: Dove Spring Formation, Clarendonian (13.6 - 10.3 Ma)

Environment/lithology: terrestrial

Primary reference: D. P. Whistler and D. W. Burbank. 1992. Miocene biostratigraphy and biochronology of the Dove Spring Formation, Mojave Desert, California, and characterization of the Clarendonian mammal age (late Miocene) in California. Geological Society America Bulletin 104(6):644-658 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 19383: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• Mbr. 2 and lower part of Mbr. 3; = "U. profectus/ C. russelli" zone
based on Perkins et al. 1998, this interval includes the Ibex Hollow ash, dated at 11.93 +/- 0.03 Ma (Ar/Ar)
Iron Canyon, level unclear: Aphelops sp. Stock and Furlong 1926 from "below the lavas in the region of Scenic Canon"
petrified tree horizon is 25' below "Hadrocyon mohavensis" locality: Stock and Furlong 1926
 Rodentia - Cricetidae
Copemys cf. longidens Hall 1930 mouse
Copemys russelli James 1963 mouse
 Rodentia - Geomyidae
Geomyidae indet.1 Bonaparte 1845 pocket gopher
 Rodentia - Heteromyidae
Cupidinimus tertius Hall 1930 rodent
Perognathus minutus James 1963 pocket mouse
 Lipotyphla - Erinaceidae
Erinaceidae indet. Fischer von Waldheim 1817 hedgehog
 Perissodactyla - Rhinocerotidae
? Peraceras sp.3 Cope 1880 rhinoceros
Last Chance Gulch, same level as type of I. mohavensis
 Perissodactyla - Equidae
Pliohippus tantalus Merriam 1913 horse
Megahippus matthewi Barbour 1914 anchitheriine horse
 Tribosphenida - Soricidae
Limnoecus sp. Stirton 1930 shrew
 Carnivora - Amphicyonidae
Ischyrocyon gidleyi1 Matthew 1902 bear-dog
 Carnivora - Canidae
Epicyon saevus Leidy 1858 bone-crushing dog
confirmed by Wang et al. 1999: localities at this and higher levels include LACM 1414, 1553, 3458, 4696, 4790, and 5713
 Proboscidea - Gomphotheriidae
? Gomphotherium sp.2 Burmeister 1837 gomphothere
 Ungulata - Merycoidodontidae
"Merychyus cf. novomexicanus" = Ustatochoerus medius novomexicanus1
"Merychyus cf. novomexicanus" = Ustatochoerus medius novomexicanus1 Frick 1929 oreodont
 Ungulata - Antilocapridae
Paracosoryx furlongi Frick 1937 pronghorn