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 | |
Pewelagus dawsonae6, Nekrolagus progressus, Alilepus wilsoni7, Pratilepus kansasensis, Notolagus lepusculus, Hypolagus regalis, Hypolagus ringoldensis6
| |
Reithrodontomys cf. rexroadensis, Neotoma cf. fossilis8, Neotoma quadriplicata, Baiomys rexroadi, "Sigmodon medius" = Sigmodon minor, Symmetrodontomys beckensis1, Symmetrodontomys simplicidens, Onychomys gidleyi, Ogmodontomys poaphagus, Peromyscus kansasensis
Reithrodontomys cf. rexroadensis Hibbard 1952 harvest mouse
Neotoma quadriplicata Hibbard 1941 pack rat
Baiomys rexroadi Hibbard 1941 pygmy mouse
"Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat
Symmetrodontomys simplicidens Hibbard 1941 mouse
Onychomys gidleyi Hibbard 1941 grasshopper mouse
Ogmodontomys poaphagus Hibbard 1941 mouse
Peromyscus kansasensis Hibbard 1941 deer mouse | |
Spermophilus sp. Cuvier 1825 ground squirrel | |
| |
Prodipodomys centralis, Perognathus carpenteri n. sp., Perognathus pearlettensis, Perognathus cf. rexroadensis
Prodipodomys centralis Hibbard 1941 rodent
Perognathus carpenteri n. sp. Dalquest 1978 pocket mouse
Perognathus pearlettensis Hibbard 1941 pocket mouse
Perognathus cf. rexroadensis Hibbard 1950 pocket mouse | |
| |
Taxidea cf. taxus Schreber 1778 American badger
Mustela rexroadensis Hibbard 1950 weasel | |
Bassariscus casei, Nasua pronarica n. sp.
Bassariscus casei Hibbard 1952 ringtail
Nasua pronarica n. sp. Dalquest 1978 coati | |
? Spilogale microdens Dalquest 1978 skunk
? Spilogale rexroadi Hibbard 1941 skunk
Buisnictis breviramus Hibbard 1941 skunk
Brachyopsigale dubius Hibbard 1954 skunk | |
"Lynx rexroadensis" = Felis rexroadensis5
| |
Nannippus beckensis n. sp.2, "Equus cf. simplicidens" = Plesippus simplicidens2, "Equus cf. cumminsii" = Equus (Asinus) cumminsi
"Equus cf. cumminsii" = Equus (Asinus) cumminsi Cope 1893 horse | |
| |
Antilocapridae indet. Gray 1866 pronghorn | |
Hemiauchenia sp. Gervais and Ameghino 1880 camel | |
Platygonus bicalcaratus Cope 1893 peccary | |
"Hesperoscalops rexroadi" = Scalopus rexroadi1
| |
Paracryptotis rex Hibbard 1950 red-toothed shrew
Sorex taylori Hibbard 1937 long-tailed shrew
Notiosorex jacksoni Hibbard 1950 gray shrew
Beckiasorex hibbardi Dalquest 1972 red-toothed shrew | |
Proboscidea indet. proboscidean | |
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