Iron Canyon (Upper) (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 19384: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• upper Mbr. 3 and lower Mbr. 4; = most of "C. avawatz./ P. furlongi" zone, except part that ranges into upper Mbr. 4
ash at 410 m, close to the base of the upper faunal zone, dated at 11.8 +/- 0.9 Ma (FT on zircon); this date is considered acceptable by Perkins et al. 1998 and seems as useable as any other for this faunal zone
Mammalia
 Rodentia - Cricetidae
"Copemys dentalis" = Peromyscus dentalis
"Copemys dentalis" = Peromyscus dentalis Hall 1930 deer mouse
 Rodentia - Geomyidae
"Thomomys" sp. Wied-Neuwied 1839 pocket gopher
 Rodentia - Heteromyidae
Cupidinimus avawatzensis Barnosky 1986 rodent
Cupidinimus tertius Hall 1930 rodent
Perognathus minutus James 1963 pocket mouse
 Rodentia - Castoridae
Eucastor sp. Allen 1877 beaver
 Lagomorpha - Ochotonidae
Hesperolagomys sp. Clark et al. 1964 pika
 Perissodactyla - Equidae
Hippotherium sp. Kaup 1832 hipparionine horse
Dinohippus cf. leardi Drescher 1941 horse
Pliohippus tantalus Merriam 1913 horse
may include UCMP 2065 "middle" Ricardo and "55 feet below the lowest basalt... 2 miles above the mouth of Iron Canyon" specimens of Merriam 1919
 Tribosphenida - Soricidae
"Sorex" sp. Linnaeus 1758 long-tailed shrew
Alluvisorex chasseae Tedford 1961 shrew
 Carnivora - Amphicyonidae
Ischyrocyon gidleyi Matthew 1902 bear-dog
 Carnivora - Canidae
Epicyon saevus Leidy 1858 bone-crushing dog
 Proboscidea - Gomphotheriidae
"Amebelodon burnhami" = Serbelodon burnhami
"Amebelodon burnhami" = Serbelodon burnhami Osborn 1933 gomphothere
 Ungulata - Merycoidodontidae
"Merychyus major" = Ustatochoerus major
"Merychyus major" = Ustatochoerus major Leidy 1858 oreodont
 Ungulata - Antilocapridae
Paracosoryx furlongi Frick 1937 pronghorn