PBDB Collection

Beck Ranch ( of the United States)

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

• "fine sediments deposited in backwaters associated with a stream system"

• "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

• includes Yellow Quarry and White Quarry, which are "about 100 feet downstream"

Show authors, comments, and common names

Mammalia
Chiroptera - Vespertilionidae	Lasionycteris noctivagans, Antrozous pallidus, Lasiurus borealis, Eptesicus fuscus Lasionycteris noctivagans Le Conte 1831 silver-haired bat a bat Antrozous pallidus Le Conte 1856 pallid bat a bat Lasiurus borealis Muller 1776 hairy-tailed bat a bat Eptesicus fuscus Beauvois 1796 big brown bat a bat
Soricomorpha - Soricidae	Sorex taylori, Notiosorex jacksoni, Beckiasorex hibbardi, Paracryptotis rex Sorex taylori Hibbard 1937 long-tailed shrew Notiosorex jacksoni Hibbard 1950 gray shrew Beckiasorex hibbardi Dalquest 1972 red-toothed shrew Paracryptotis rex Hibbard 1950 red-toothed shrew
Soricomorpha - Talpidae	"Hesperoscalops rexroadi" = Scalopus rexroadi¹ "Hesperoscalops rexroadi" = Scalopus rexroadi¹ Hibbard 1941 mole
Carnivora - Canidae	Borophagus diversidens, Vulpes velox, Urocyon galushai⁴, Canis lepophagus⁴ Borophagus diversidens Cope 1892 bone-crushing dog confirmed by Wang et al. 1999 Vulpes velox Say 1823 swift fox not denied by Anderson 1984 Urocyon galushai⁴ Tedford et al. 2009 gray fox Canis lepophagus⁴ Johnston 1938 canine
Carnivora - Mustelidae	Taxidea cf. taxus, Mustela rexroadensis Taxidea cf. taxus Schreber 1778 American badger Mustela rexroadensis Hibbard 1950 weasel
Carnivora - Mephitidae	Brachyopsigale dubius, ? Spilogale rexroadi, ? Spilogale microdens, Buisnictis breviramus Brachyopsigale dubius Hibbard 1954 skunk ? Spilogale rexroadi Hibbard 1941 skunk ? Spilogale microdens Dalquest 1978 skunk Buisnictis breviramus Hibbard 1941 skunk
Carnivora - Procyonidae	Bassariscus casei, Nasua pronarica n. sp. Bassariscus casei Hibbard 1952 ringtail Nasua pronarica n. sp. Dalquest 1978 coati
Carnivora - Felidae	"Lynx rexroadensis" = Felis rexroadensis⁵ "Lynx rexroadensis" = Felis rexroadensis⁵ Stephens 1959 cat
Artiodactyla - Tayassuidae	Platygonus bicalcaratus Platygonus bicalcaratus Cope 1893 peccary
Artiodactyla - Antilocapridae	Antilocapridae indet. Antilocapridae indet. Gray 1866 pronghorn
Artiodactyla - Camelidae	Hemiauchenia sp. Hemiauchenia sp. Gervais and Ameghino 1880 camel
Perissodactyla - Equidae	"Equus cf. simplicidens" = Plesippus simplicidens², "Equus cf. cumminsii" = Equus (Asinus) cumminsi, Nannippus beckensis n. sp.² "Equus cf. simplicidens" = Plesippus simplicidens² Cope 1892 horse "Equus cf. cumminsii" = Equus (Asinus) cumminsi Cope 1893 horse Nannippus beckensis n. sp.² Dalquest and Donovan 1973 hipparionine horse
Perissodactyla - Rhinocerotidae	Rhinocerotidae indet.³ Rhinocerotidae indet.³ Gray 1821 rhinoceros
Lagomorpha - Leporidae	Notolagus lepusculus, Hypolagus regalis, Hypolagus ringoldensis⁶, Nekrolagus progressus, Pewelagus dawsonae⁶, Pratilepus kansasensis, Alilepus wilsoni⁷ Notolagus lepusculus Hibbard 1939 rabbit confirmed by White 1988, 1991 Hypolagus regalis Hibbard 1939 rabbit confirmed by White 1988 Hypolagus ringoldensis⁶ Gustafson 1978 rabbit Nekrolagus progressus Hibbard 1939 rabbit confirmed by White 1991a Pewelagus dawsonae⁶ White 1984 rabbit Pratilepus kansasensis Hibbard 1939 rabbit confirmed by White 1991a Alilepus wilsoni⁷ White 1991 rabbit
Rodentia - Cricetidae	Reithrodontomys cf. rexroadensis, Onychomys gidleyi, Neotoma quadriplicata, Neotoma cf. fossilis⁸, Symmetrodontomys beckensis¹, Symmetrodontomys simplicidens, Ogmodontomys poaphagus, Baiomys rexroadi, Peromyscus kansasensis, "Sigmodon medius" = Sigmodon minor Reithrodontomys cf. rexroadensis Hibbard 1952 harvest mouse Onychomys gidleyi Hibbard 1941 grasshopper mouse Neotoma quadriplicata Hibbard 1941 pack rat Neotoma cf. fossilis⁸ Gidley 1922 pack rat Symmetrodontomys beckensis¹ Dalquest 1978 rodent Symmetrodontomys simplicidens Hibbard 1941 rodent Ogmodontomys poaphagus Hibbard 1941 rodent Baiomys rexroadi Hibbard 1941 pygmy mouse Peromyscus kansasensis Hibbard 1941 deer mouse "Sigmodon medius" = Sigmodon minor Gidley 1922 cotton rat
Rodentia - Sciuridae	Spermophilus sp. Spermophilus sp. Cuvier 1825 ground squirrel
Rodentia - Heteromyidae	Prodipodomys centralis, Perognathus pearlettensis, Perognathus carpenteri n. sp., Perognathus cf. rexroadensis Prodipodomys centralis Hibbard 1941 rodent Perognathus pearlettensis Hibbard 1941 pocket mouse Perognathus carpenteri n. sp. Dalquest 1978 pocket mouse Perognathus cf. rexroadensis Hibbard 1950 pocket mouse
Rodentia - Geomyidae	Nerterogeomys minor¹ Nerterogeomys minor¹ Gidley 1922 pocket gopher
Proboscidea - Proboscidea	Proboscidea indet. Proboscidea indet. proboscidean

¹Alroy 2002; ²Dalquest and Donovan 1973; ³Madden and Dalquest 1990; ⁴Tedford et al. 2009; ⁵Werdelin 1985; ⁶White 1988; ⁷White 1991; ⁸Zakrzewski 1993