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 37.3° N, 99.9° W)

• 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: CC BY (attribution)

Taxonomic list

• originally reported by Hibbard 1941d

Show authors, comments, and common names

Reptilia
Squamata - Colubridae	Lampropeltis doliata², Lampropeltis getulus², Elaphe cf. obsoleta², Pituophis catenifer², Coluber constrictor², ? Rhinocheilus lecontei², Heterodon nasicus² Lampropeltis doliata² colubrid snake Lampropeltis getulus² Linnaeus 1766 kingsnake Elaphe cf. obsoleta² Say 1823 black rat snake Pituophis catenifer² gopher snake Coluber constrictor² Linnaeus 1758 black racer ? Rhinocheilus lecontei² colubrid snake Heterodon nasicus² Baird and Girard 1852 western hognose snake
Squamata - Crotalidae	Crotalus viridis², Agkistrodon contortix², Sistrurus catenatus² Crotalus viridis² Rafinesque 1818 prairie rattlesnake Agkistrodon contortix² cottonmouth Sistrurus catenatus² pigmy rattlesnake
Mammalia
Carnivora - Mustelidae	"Mustela cf. frenata" = Neogale frenata⁴ "Mustela cf. frenata" = Neogale frenata⁴ Lichtenstein 1831 long-tailed weasel
Carnivora - Mephitidae	Spilogale putorius Spilogale putorius Linnaeus 1758 eastern spotted skunk
Carnivora - Canidae	Canis cf. latrans⁴, Urocyon cinereoargenteus¹ Canis cf. latrans⁴ Say 1823 coyote Urocyon cinereoargenteus¹ Schreber 1775 gray fox
Carnivora - Felidae	Lynx sp.¹ Lynx sp.¹ Kerr 1792 lynx
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
Theriamorpha - Soricidae	Sorex taylori Sorex taylori Hibbard 1937 long-tailed shrew
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
Rodentia - Zapodidae	Zapus burti n. sp. Zapus burti n. sp. Hibbard 1941 jumping mouse see Hibbard 1941d
Rodentia - Cricetidae	Onychomys pedroensis, Onychomys hollisteri n. sp.³, Neotoma taylori n. sp., Sigmodon minor¹, Mictomys vetus¹, Ondatra cf. idahoensis, Reithrodontomys pratincola n. sp. Onychomys pedroensis Gidley 1922 grasshopper mouse includes type of "O. fossilis" of Hibbard 1941d Onychomys hollisteri n. sp.³ Carleton and Eshelman 1979 grasshopper mouse Neotoma taylori n. sp. Hibbard 1967 pack rat see Hibbard 1967 Sigmodon minor¹ Gidley 1922 cotton rat Mictomys vetus¹ Wilson 1933 bog lemming Ondatra cf. idahoensis Wilson 1933 muskrat described as "Pliopotamys" by Hibbard 1956, see Hibbard 1959 Reithrodontomys pratincola n. sp. Hibbard 1941 harvest mouse see Hibbard 1941d
Rodentia - Sciuridae	Spermophilus "sp. morph B"⁵, Spermophilus "sp. morph A"⁵, Spermophilus cragini n. sp., Spermophilus meadensis 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 cragini n. sp. Hibbard 1941 ground squirrel see Hibbard 1941d Spermophilus meadensis n. sp. Hibbard 1941 ground squirrel see Hibbard 1941d
Rodentia - Geomyidae	Geomys sp. Geomys sp. Rafinesque 1817 pocket gopher
Rodentia - Heteromyidae	Perognathus pearlettensis n. sp., Perognathus gidleyi, Prodipodomys tiheni¹, Dipodomys hibbardi n. sp.⁸ Perognathus pearlettensis n. sp. Hibbard 1941 pocket mouse see Hibbard 1941d Perognathus gidleyi Hibbard 1941 pocket mouse Prodipodomys tiheni¹ Hibbard 1943 rodent Dipodomys hibbardi n. sp.⁸ Zakrzewski 1981 kangaroo rat

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