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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Alilepus wilsoni7, Pratilepus kansasensis, Pewelagus dawsonae6, Hypolagus regalis, Hypolagus ringoldensis6, Notolagus lepusculus, Nekrolagus progressus
| |
Baiomys rexroadi, Reithrodontomys cf. rexroadensis, Peromyscus kansasensis, Onychomys gidleyi, Symmetrodontomys beckensis1, Symmetrodontomys simplicidens, "Sigmodon medius" = Sigmodon minor, Neotoma quadriplicata, Neotoma cf. fossilis8, Ogmodontomys poaphagus
Baiomys rexroadi Hibbard 1941 pygmy mouse
Reithrodontomys cf. rexroadensis Hibbard 1952 harvest mouse
Peromyscus kansasensis Hibbard 1941 deer mouse
Onychomys gidleyi Hibbard 1941 grasshopper mouse
Symmetrodontomys simplicidens Hibbard 1941 mouse
"Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat
Neotoma quadriplicata Hibbard 1941 pack rat
Ogmodontomys poaphagus Hibbard 1941 mouse | |
Spermophilus sp. Cuvier 1825 ground squirrel | |
Perognathus cf. rexroadensis, Perognathus carpenteri n. sp., Perognathus pearlettensis, Prodipodomys centralis
Perognathus cf. rexroadensis Hibbard 1950 pocket mouse
Perognathus carpenteri n. sp. Dalquest 1978 pocket mouse
Perognathus pearlettensis Hibbard 1941 pocket mouse
Prodipodomys centralis Hibbard 1941 rodent | |
| |
"Hesperoscalops rexroadi" = Scalopus rexroadi1
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Notiosorex jacksoni Hibbard 1950 gray shrew
Beckiasorex hibbardi Dalquest 1972 red-toothed shrew
Sorex taylori Hibbard 1937 long-tailed shrew
Paracryptotis rex Hibbard 1950 red-toothed shrew | |
"Lynx rexroadensis" = Felis rexroadensis5
| |
? Spilogale rexroadi Hibbard 1941 skunk
? Spilogale microdens Dalquest 1978 skunk
Buisnictis breviramus Hibbard 1941 skunk
Brachyopsigale dubius Hibbard 1954 skunk | |
Mustela rexroadensis Hibbard 1950 weasel
Taxidea cf. taxus Schreber 1778 American badger | |
Nasua pronarica n. sp., Bassariscus casei
Nasua pronarica n. sp. Dalquest 1978 coati
Bassariscus casei Hibbard 1952 ringtail | |
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Antilocapridae indet. Gray 1866 pronghorn | |
Platygonus bicalcaratus Cope 1893 peccary | |
Hemiauchenia sp. Gervais and Ameghino 1880 camel | |
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"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 | |
Proboscidea indet. proboscidean |