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 32.1° N, 109.6° W)

• coordinate based on political unit

When: St. David Formation, Blancan (4.9 - 1.8 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: CC BY (attribution)

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