Curtis Floss ( of the United States)

Also known as UA locality 25-2; "Gidley Level" in part; Curtis Ranch in part

Where: Cochise County, Arizona (32.0° N, 110.2° W)

• Paleocoordinates: 32.8° N, 109.2° W (Wright 2013)

• coordinate based on political unit

When: St. David Formation, Blancan (4.7 - 1.4 Ma)

• within chron C2r.2r

•said to be Irvingtonian, but presumably Blancan insofar as it underlies the Glyptotherium fauna, which is Blancan according to Cassiliano 1999

Environment/lithology: terrestrial

Primary reference: E. H. Lindsay and N. T. Tessman. 1974. Cenozoic Vertebrate Localities and Faunas in Arizona. Journal of the Arizona Academy of Sciences 9(1):3-24 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 20303: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC0 (CC0)

Taxonomic list

• species-level i.d.s inferred from "Gidley Level" list of Johnson et al. 1975

•"Curtis Ranch" herpetofauna described by Brattstrom 1955: Ambystoma tigrinum, Coluber constrictor, Lampropeltis intermedius n. sp., Natrix sp., Thamnophis sp., Crotalus lepidus, Testudo sp. (not seen and probably Gopherus sp.)

Mammalia
 Soricomorpha - Talpidae
Talpidae indet. Fischer de Waldheim 1817 mole
 Carnivora - Canidae
Canis edwardii Gazin 1942 canine
confirmed by Nowak 1979, although Johnson et al. 1975 list "C. priscolatrans"
 Carnivora - Mephitidae
Spilogale putorius4 Linnaeus 1758 eastern spotted skunk
 Artiodactyla - Antilocapridae
Capromeryx gidleyi4 Frick 1937 pronghorn
presumably includes type of Frick 1937 from "Curtis Flats, Benson"
 Artiodactyla - Tayassuidae
Platygonus sp. Leconte 1848 peccary
 Artiodactyla - Camelidae
Camelops sp. Leidy 1854 camel
Hemiauchenia sp.1 Gervais and Ameghino 1880 camel
 Perissodactyla - Equidae
Equus sp. Linnaeus 1758 horse
 Rodentia - Geomyidae
Nerterogeomys persimilis4 Hay 1927 pocket gopher
 Rodentia - Cricetidae
Peromyscus sp. Gloger 1841 deer mouse
"Bensonomys arizonae" = Calomys (Bensonomys) arizonae4 Gidley 1922 rodent
Onychomys pedroensis4 Gidley 1922 grasshopper mouse
Sigmodon curtisi4 Gidley 1922 cotton rat
Sigmodon minor4 Gidley 1922 cotton rat
 Lagomorpha - Leporidae
Sylvilagus sp.3 Gray 1867 cottontail rabbit
Aluralagus virginiae n. sp.2 Downey 1970 rabbit
see also White 1991a
 Proboscidea - Gomphotheriidae
Stegomastodon sp. Pohlig 1912 gomphothere