PBDB Collection

Borchers (Pleistocene of the United States)

Also known as KU-MEA-009; Locality 9

Where: Meade County, Kansas (37.2° N, 100.3° W)

• Paleocoordinates: 37.9° N, 99.2° W (Wright 2013)

• coordinate based on political unit

When: Atwater Member (Crooked Creek Formation), Gelasian (2.6 - 1.8 Ma)

• overlies Pearlette type "B" ash, dated at 1.96 (= 2.01) +/- 0.05 Ma (KA on sanidine) by Naeser et al. 1973

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; volcaniclastic siltstone

• Goodwin and Hayes 1994: Specimens were collected from a weathered ash and silt layer 1.22 m thick overlying a bedded volcanic ash.

Size classes: macrofossils, mesofossils

Primary reference: C. W. Hibbard. 1970. in Dort and Jones [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 19927: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC0 (CC0)

Taxonomic list

• originally reported by Hibbard 1941d

Show authors, comments, and common names

Reptilia
Squamata - Crotalidae	Agkistrodon contortix², Sistrurus catenatus², Crotalus viridis² Agkistrodon contortix² cottonmouth Sistrurus catenatus² Rafinesque 1818 pigmy rattlesnake Crotalus viridis² Rafinesque 1818 prairie rattlesnake
Squamata - Colubridae	Pituophis catenifer², Coluber constrictor², Lampropeltis doliata², Lampropeltis getulus², Elaphe cf. obsoleta², ? Rhinocheilus lecontei², Heterodon nasicus² Pituophis catenifer² gopher snake Coluber constrictor² Linnaeus 1758 black racer Lampropeltis doliata² colubrid snake Lampropeltis getulus² Linnaeus 1766 kingsnake Elaphe cf. obsoleta² Say 1823 black rat snake ? Rhinocheilus lecontei² colubrid snake Heterodon nasicus² Baird and Girard 1852 western hognose snake
Mammalia
Soricomorpha - Soricidae	Sorex taylori Sorex taylori Hibbard 1937 long-tailed shrew
Perissodactyla - Equidae	Equus cf. giganteus Equus cf. giganteus Gidley 1901 horse
Artiodactyla - Tayassuidae	Platygonus sp. Platygonus sp. Leconte 1848 peccary
Artiodactyla - Camelidae	Hemiauchenia sp.⁶, Camelops sp. Hemiauchenia sp.⁶ Gervais and Ameghino 1880 camel Camelops sp. Leidy 1854 camel
Artiodactyla - Antilocapridae	Antilocapridae indet. Antilocapridae indet. Gray 1866 pronghorn
Carnivora - Felidae	Lynx sp.¹ Lynx sp.¹ Kerr 1792 lynx
Carnivora - Canidae	Urocyon cinereoargenteus¹, Canis cf. latrans⁴ Urocyon cinereoargenteus¹ Schreber 1775 gray fox Canis cf. latrans⁴ Say 1823 coyote
Carnivora - Mephitidae	Spilogale putorius Spilogale putorius Linnaeus 1758 eastern spotted skunk
Carnivora - Mustelidae	"Mustela cf. frenata" = Neogale frenata⁴ "Mustela cf. frenata" = Neogale frenata⁴ Lichtenstein 1831 long-tailed weasel
Rodentia - Heteromyidae	Dipodomys hibbardi n. sp.⁸, Prodipodomys tiheni¹, Perognathus gidleyi, Perognathus pearlettensis n. sp. Dipodomys hibbardi n. sp.⁸ Zakrzewski 1981 kangaroo rat Prodipodomys tiheni¹ Hibbard 1943 rodent Perognathus gidleyi Hibbard 1941 pocket mouse Perognathus pearlettensis n. sp. Hibbard 1941 pocket mouse see Hibbard 1941d
Rodentia - Geomyidae	Geomys sp. Geomys sp. Rafinesque 1817 pocket gopher
Rodentia - Cricetidae	Reithrodontomys pratincola n. sp., Sigmodon minor¹, Onychomys hollisteri n. sp.³, Onychomys pedroensis, Ondatra cf. idahoensis, Mictomys vetus¹, Neotoma taylori n. sp. Reithrodontomys pratincola n. sp. Hibbard 1941 harvest mouse see Hibbard 1941d Sigmodon minor¹ Gidley 1922 cotton rat Onychomys hollisteri n. sp.³ Carleton and Eshelman 1979 grasshopper mouse Onychomys pedroensis Gidley 1922 grasshopper mouse includes type of "O. fossilis" of Hibbard 1941d Ondatra cf. idahoensis Wilson 1933 muskrat described as "Pliopotamys" by Hibbard 1956, see Hibbard 1959 Mictomys vetus¹ Wilson 1933 bog lemming Neotoma taylori n. sp. Hibbard 1967 pack rat see Hibbard 1967
Rodentia - Sciuridae	Spermophilus "sp. morph B"⁵, Spermophilus "sp. morph A"⁵, Spermophilus meadensis n. sp., Spermophilus cragini n. sp. Spermophilus "sp. morph B"⁵ Cuvier 1825 ground squirrel "morph A" Spermophilus "sp. morph A"⁵ Cuvier 1825 ground squirrel "morph B" Spermophilus meadensis n. sp. Hibbard 1941 ground squirrel see Hibbard 1941d Spermophilus cragini n. sp. Hibbard 1941 ground squirrel see Hibbard 1941d
Rodentia - Zapodidae	Zapus burti n. sp. Zapus burti n. sp. Hibbard 1941 jumping mouse see Hibbard 1941d
Lagomorpha - Leporidae	Lepus cf. californicus, Alilepus hibbardi⁷ Lepus cf. californicus Gray 1837 black-tailed jackrabbit confirmed by White 1991a; includes "Nekrolagus" according to Hibbard 1963a Alilepus hibbardi⁷ White 1991 rabbit

¹Alroy 2002; ²Brattstrom 1967; ³Carleton and Eshelman 1979; ⁴Getz 1960; ⁵Goodwin and Hayes 1994; ⁶Hibbard 1954; ⁷White 1991; ⁸Zakrzewski 1981