Sand Point (USGS 19128) ( of the United States)

Also known as DWT 406; Hammett; Shell Mountain

Where: Owyhee County, Idaho (43.0° N, 118.0° W: paleocoordinates 43.1° N, 117.4° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Blancan (4.9 - 1.8 Ma)

Environment/lithology: terrestrial

Reposited in the USGS

Primary reference: C. W. Hibbard. 1959. Late Cenozoic Microtine Rodents from Wyoming and Idaho. Papers of the Michigan Academy of Science, Arts, and Letters 44:3-40 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 19908: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• thought by Hibbard to underlie the Hagerman "formation" but actually "more than 600 feet" above the Gidley Horse Quarry: Malde 1972; Zakrzewski 1969 gives a figure of 900' above localities at about the latter level, but 600' is used as an estimate because Malde's figured section and discussion are unequivocal
from a normally magnetized ash: Thewissen and Smith 1987
UO 2045 (unpublished locality) is also at Sand Point: Shotwell 1970; referred to as UO "1045" by Neville et al. 1979
Mammalia
 Rodentia - Cricetidae
Ondatra minor4 Kretzoi 1955 muskrat
Ophiomys taylori1 Hibbard 1959 vole
 Rodentia - Geomyidae
Thomomys sp. Wied-Neuwied 1839 pocket gopher
 Lagomorpha - Leporidae
Hypolagus gidleyi3 White 1988 rabbit
Alilepus vagus1 Gazin 1934 rabbit
 Perissodactyla - Equidae
Equus sp.1 Linnaeus 1758 horse
 Chiroptera - Vespertilionidae
Antrozous pallidus2 Le Conte 1856 pallid bat
a bat; from "stratigraphically below" the two main localities
 Proboscidea - Mammutidae
Mammutidae indet. Hay 1922 mastodon
"mastodont"