Where: Scurry County, Texas (32.7° N, 100.9° W: paleocoordinates 32.8° N, 100.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Blancan (4.9 - 1.8 Ma)
• from a single bed that is 11 feet thick in a nearby measured section
• bed-level stratigraphic resolution
Environment/lithology: fluvial; pebbly sandstone
Size classes: macrofossils, mesofossils
Collection methods: bulk, sieve,
• "50 tons of fossil-bearing matrix collected for screen washing"
Primary reference: W. W. Dalquest. 1978. Early Blancan mammals of the Beck Ranch local fauna of Texas. Journal of Mammalogy 59(2):269-298 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 20060: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
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Notolagus lepusculus, Hypolagus ringoldensis6, Hypolagus regalis, Pewelagus dawsonae6, Nekrolagus progressus, Pratilepus kansasensis, Alilepus wilsoni7
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Spermophilus sp. Cuvier 1825 ground squirrel | |
Peromyscus kansasensis, Baiomys rexroadi, Neotoma cf. fossilis8, Neotoma quadriplicata, Ogmodontomys poaphagus, Onychomys gidleyi, Reithrodontomys cf. rexroadensis, Symmetrodontomys beckensis1, Symmetrodontomys simplicidens, "Sigmodon medius" = Sigmodon minor
Peromyscus kansasensis Hibbard 1941 deer mouse
Baiomys rexroadi Hibbard 1941 pygmy mouse
Neotoma quadriplicata Hibbard 1941 pack rat
Ogmodontomys poaphagus Hibbard 1941 mouse
Onychomys gidleyi Hibbard 1941 grasshopper mouse
Reithrodontomys cf. rexroadensis Hibbard 1952 harvest mouse
Symmetrodontomys simplicidens Hibbard 1941 mouse
"Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat | |
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Prodipodomys centralis, Perognathus cf. rexroadensis, Perognathus pearlettensis, Perognathus carpenteri n. sp.
Prodipodomys centralis Hibbard 1941 rodent
Perognathus cf. rexroadensis Hibbard 1950 pocket mouse
Perognathus pearlettensis Hibbard 1941 pocket mouse
Perognathus carpenteri n. sp. Dalquest 1978 pocket mouse | |
Paracryptotis rex Hibbard 1950 red-toothed shrew
Sorex taylori Hibbard 1937 long-tailed shrew
Beckiasorex hibbardi Dalquest 1972 red-toothed shrew
Notiosorex jacksoni Hibbard 1950 gray shrew | |
"Hesperoscalops rexroadi" = Scalopus rexroadi1
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Platygonus bicalcaratus Cope 1893 peccary | |
Antilocapridae indet. Gray 1866 pronghorn | |
Hemiauchenia sp. Gervais and Ameghino 1880 camel | |
"Equus cf. cumminsii" = Equus (Asinus) cumminsi, "Equus cf. simplicidens" = Plesippus simplicidens2, Nannippus beckensis n. sp.2
"Equus cf. cumminsii" = Equus (Asinus) cumminsi Cope 1893 horse | |
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"Lynx rexroadensis" = Felis rexroadensis5
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Taxidea cf. taxus Schreber 1778 American badger
Mustela rexroadensis Hibbard 1950 weasel | |
Brachyopsigale dubius Hibbard 1954 skunk
Buisnictis breviramus Hibbard 1941 skunk
? Spilogale rexroadi Hibbard 1941 skunk
? Spilogale microdens Dalquest 1978 skunk | |
Bassariscus casei, Nasua pronarica n. sp.
Bassariscus casei Hibbard 1952 ringtail
Nasua pronarica n. sp. Dalquest 1978 coati | |
Proboscidea indet. proboscidean |