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 | |
Proboscidea indet. proboscidean | |
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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 | |
Ogmodontomys poaphagus, "Sigmodon medius" = Sigmodon minor, Onychomys gidleyi, Reithrodontomys cf. rexroadensis, Neotoma cf. fossilis8, Neotoma quadriplicata, Peromyscus kansasensis, Symmetrodontomys simplicidens, Symmetrodontomys beckensis1, Baiomys rexroadi
Ogmodontomys poaphagus Hibbard 1941 mouse
"Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat
Onychomys gidleyi Hibbard 1941 grasshopper mouse
Reithrodontomys cf. rexroadensis Hibbard 1952 harvest mouse
Neotoma quadriplicata Hibbard 1941 pack rat
Peromyscus kansasensis Hibbard 1941 deer mouse
Symmetrodontomys simplicidens Hibbard 1941 mouse
Baiomys rexroadi Hibbard 1941 pygmy mouse | |
Spermophilus sp. Cuvier 1825 ground squirrel | |
Nekrolagus progressus, Pratilepus kansasensis, Alilepus wilsoni7, Notolagus lepusculus, Hypolagus ringoldensis6, Hypolagus regalis, Pewelagus dawsonae6
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"Hesperoscalops rexroadi" = Scalopus rexroadi1
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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 | |
Brachyopsigale dubius Hibbard 1954 skunk
? Spilogale rexroadi Hibbard 1941 skunk
? Spilogale microdens Dalquest 1978 skunk
Buisnictis breviramus Hibbard 1941 skunk | |
Taxidea cf. taxus Schreber 1778 American badger
Mustela rexroadensis Hibbard 1950 weasel | |
Nasua pronarica n. sp., Bassariscus casei
Nasua pronarica n. sp. Dalquest 1978 coati
Bassariscus casei Hibbard 1952 ringtail | |
"Lynx rexroadensis" = Felis rexroadensis5
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"Equus cf. simplicidens" = Plesippus simplicidens2, "Equus cf. cumminsii" = Equus (Asinus) cumminsi, Nannippus beckensis n. sp.2
"Equus cf. cumminsii" = Equus (Asinus) cumminsi Cope 1893 horse | |
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Antilocapridae indet. Gray 1866 pronghorn | |
Hemiauchenia sp. Gervais and Ameghino 1880 camel | |
Platygonus bicalcaratus Cope 1893 peccary | |
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