Saw Rock Canyon (Lower) ( of the United States)

Also known as Locality No. 6; XI Ranch

Where: Seward County, Kansas (37.1° N, 100.9° W: paleocoordinates 37.2° N, 100.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: XI Member (Rexroad Formation), Blancan (4.9 - 1.8 Ma)

Environment/lithology: terrestrial

Primary reference: C. W. Hibbard. 1964. Papers of the Michigan Academy of Science, Arts, and Letters 49 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 19922: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Jason Head

Creative Commons license: CC BY (attribution)

Taxonomic list

• from a 12 to 14 inch thick layer: Hibbard 1953c

•Nelson and Miller 1990 appear to misattribute an identification of Mimomys mcknighti from Saw Rock Canyon to Repenning 1987

•placed by Repenning 1987 in earliest Blancan

•"Teleoceras sp." Prothero and Manning 1987: record likely "in error" according to Martin et al. 2002

Reptilia
 Testudines - Kinosternoidea
Kinosternon flavescens4 Agassiz 1857 Yellow mud turtle
Kinosternon subrubrum4 Bonnaterre 1788 Eastern mud turtle
Aves
 Pelecaniformes - Threskiornithidae
cf. Plegadis sp.10 Kaup 1829 ibis
"gen. tentative"
Reptilia
 Squamata - Colubridae
Elaphe obsoleta3 Say 1823 black rat snake
Coluber constrictor3 Linnaeus 1758 black racer
Thamnophis sp.3 Fitzinger 1843 garter snake
Nerodia sp.2 Baird and Girard 1853 water snake
 Squamata - Crotalidae
 Squamata - Scincidae
Mammalia
 Rodentia - Cricetidae
"Bensonomys stirtoni" = Calomys (Bensonomys) stirtoni1 Hibbard 1953 mouse
Baiomys rexroadi1 Hibbard 1941 pygmy mouse
Neotoma sawrockensis n. sp.5 Hibbard 1967 pack rat
Ogmodontomys sawrockensis n. sp. Hibbard 1957 mouse
see Hibbard 1957a
Symmetrodontomys simplicidens8 Hibbard 1941 mouse
Onychomys gidleyi1 Hibbard 1941 grasshopper mouse
 Rodentia - Sciuridae
Paenemarmota sawrockensis1 Hibbard 1964 squirrel
Marmotini indet.1 squirrel
 Rodentia - Geomyidae
Geomys sp.9 Rafinesque 1817 pocket gopher
 Rodentia - Heteromyidae
Prodipodomys griggsorum12, Perognathus mclaughlini n. sp., "Prodipodomys cf. coquorum" = Perognathus coquorum7
Prodipodomys griggsorum12 Zakrzewski 1970 rodent
Perognathus mclaughlini n. sp. Hibbard 1949 pocket mouse
see Hibbard 1949c
"Prodipodomys cf. coquorum" = Perognathus coquorum7 Wood 1935 pocket mouse
"quite likely" this species
 Rodentia - Castoridae
Dipoides wilsoni n. sp. Hibbard 1949 beaver
see Hibbard 1949
 Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817 rabbit
 Lipotyphla - Talpidae
Hesperoscalops sewardensis n. sp. Reed 1962 mole
originally described by Reed 1962
 Tribosphenida - Soricidae
Paracryptotis sp.6 Hibbard 1950 shrew
 Carnivora - Mustelidae
Buisnictis cf. schoffi Hibbard 1954 skunk
 Carnivora - Canidae
Borophagus hilli1 Johnston 1939 bone-crushing dog
 Ungulata - Camelidae
Camelidae indet. Gray 1821 camel
small