White Cone (Neogene of the United States)

Also known as UALP 6

Where: Navajo County, Arizona (35.8° N, 110.1° W: paleocoordinates 36.2° N, 108.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Bidahochi Formation, Late/Upper Hemphillian (10.3 - 4.9 Ma)

• "middle Hemphillian"

•Baskin 1978: from the "upper member of the Bidahochi Formation, approximately 20 m above the volcanic (limburgite) tuff middle member"; a different basalt in the middle member is dated at 6.69 +/- 0.16 Ma (K-Ar)

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Collected by Baskin in 1974

Collection methods: bulk, sieve,

• material reposited in the UALP but owned by "the Navajo and Hope tribes" (Baskin 1978)

Primary reference: J. A. Baskin. 1979. Small Mammals of the Hemphillian Age White Cone Local Fauna, Northeastern Arizona. Journal of Paleontology 53(3):695-708 [J. Alroy/J. Alroy/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 19610: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Salientia - Pelobatidae
Scaphiopus sp.7 Holbrook 1836 spadefoot toad
 Salientia - Ranidae
Rana sp.7 Linnaeus 1758 frog
 Salientia - Hylidae
Hyla sp.7 Laurenti 1768 tree frog
 Salientia - Bufonidae
Bufo sp.7 Laurenti 1768 toad
large
"Bufo woodhousii" = Bufo woodhousei7 Girard 1854 Woodhouse's toad
Bufo pliocompactilis7 Wilson 1968 toad
Reptilia
 Squamata - Teiidae
Cnemidophorus sp.7 Wagler 1830 whiptail lizard
 Squamata - Colubridae
"Lampropeltis getula" = Lampropeltis getulus7 Linnaeus 1766 kingsnake
gender is correct!
Pituophis melanoleucus7 Daudin 1803 pine snake
Heterodon cf. nasicus7 Baird and Girard 1852 western hognose snake
Thamnophis sp.7 Fitzinger 1843 garter snake
 Squamata - Scincidae
Eumeces sp.7 Wiegmann 1834 skink
Mammalia
 Rodentia - Cricetidae
"Bensonomys yazhi" = Calomys (Bensonomys) yazhi1 Baskin 1978 mouse
"Bensonomys gidleyi" = Calomys (Bensonomys) gidleyi1 Baskin 1978 mouse
Copemys sp. Wood 1936 mouse
Paronychomys alticuspis n. sp. Baskin 1979 mouse
Cricetinae indet. Fischer von Waldheim 1817 mouse
 Rodentia - Sciuridae
Spermophilus sp. Cuvier 1825 ground squirrel
compared to S. gidleyi
Sciurinae indet. Gray 1821 squirrel
 Rodentia - Heteromyidae
Cupidinimus bidahochiensis1 Baskin 1979 rodent
Perognathinae indet.1 Coues 1875 rodent
 Rodentia - Castoridae
Dipoides williamsi n. sp. Stirton 1936 beaver
see Stirton 1936
 Rodentia - Mylagaulidae
Mylagaulidae indet.5 Cope 1881 rodent
 Lagomorpha - Leporidae
Hypolagus ringoldensis9 Gustafson 1978 rabbit
 Lipotyphla - Talpidae
? Domninoides sp. Green 1956 mole
 Tribosphenida - Soricidae
Notiosorex sp. Baird 1877 gray shrew
 Carnivora - Procyonidae
Procyonidae indet.6 Gray 1825 procyonid carnivore
 Carnivora - Mustelidae
Cernictis repenningi n. sp.2 Baskin 2011 mustelid carnivore
Plesiogulo marshalli3 Martin 1928 mustelid carnivore
 Carnivora - Canidae
Eucyon davisi8 Merriam 1911 canine
 Carnivora - Felidae
"Paramachairodus sp." = Paramachaerodus4
"Paramachairodus sp." = Paramachaerodus4 Pilgrim 1913 cat
USNM 2444453
 Ungulata - Camelidae
Camelidae indet.6 Gray 1821 camel