Screw Bean (Neogene of the United States)

Also known as TMM 42124, 42247, 42248, 42252

Where: Brewster County, Texas (29.3° N, 103.0° W: paleocoordinates 29.6° N, 101.4° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Banta Shut-In Formation, early Early Hemphillian (10.3 - 4.9 Ma)

• said to be earliest Hemphillian

•material is from throughout the section

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone and conglomerate

• none given; section shows mixed sandstones and gravels

Size class: macrofossils

Reposited in the TMM

Primary reference: M. S. Stevens and J. B. Stevens. 1989. Neogene - Quaternary deposits and vertebrate faunas, Trans-Pecos Texas. Society of Vertebrate Paleontology Guidebook 67-90 [J. Alroy/J. Alroy]more details

PaleoDB collection 19538: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Lagomorpha - Leporidae
Archaeolaginae indet.1
 Rodentia - Sciuridae
Spermophilus sp.1
Spermophilus sp.1 Cuvier 1825 ground squirrel
 Rodentia - Heteromyidae
Heteromyinae indet.
Heteromyinae indet. Gray 1868 rodent
"probably Perognathus sp."
 Perissodactyla - Rhinocerotidae
Rhinocerotidae indet.
Rhinocerotidae indet. Gray 1821 rhinoceros
 Perissodactyla - Equidae
Hipparionini indet., Equini indet.
Hipparionini indet. Quinn 1955 hipparionine horse
"cf. Neohipparion or Cormohipparion"
Equini indet. Quinn 1955 horse
"cf. Pliohippus or Astrohippus"
 Artiodactyla - Camelidae
Hemiauchenia sp., ? Megatylopus sp.
Hemiauchenia sp. Gervais and Ameghino 1880 camel
? Megatylopus sp. Matthew and Cook 1909 camel
 Artiodactyla - Antilocapridae
Antilocapridae indet.
Antilocapridae indet. Gray 1866 pronghorn
 Carnivora - Mustelidae
Martes sp.
Martes sp. Frisch 1775 marten
TMM 42247
 Carnivora - Mephitidae
"Buisnictis chisoensis n. sp." = Martinogale chisoensis2
"Buisnictis chisoensis n. sp." = Martinogale chisoensis2 Stevens and Stevens 2003 skunk
said to be new
 Carnivora - Canidae
cf. Eucyon sp.2, Epicyon haydeni2, Vulpes sp.2
cf. Eucyon sp.2 Tedford and Qiu 1996 canine
TMM 42247
Epicyon haydeni2 Leidy 1858 bone-crushing dog
Vulpes sp.2 Frisch 1775 fox
 Carnivora - Felidae
? Pseudaelurus sp.2, "cf. Nimravides catocopis" = Machairodus catocopis2
? Pseudaelurus sp.2 Leidy 1858 cat
TMM 42247
"cf. Nimravides catocopis" = Machairodus catocopis2 Cope 1887 cat
TMM 42124, 42247
1Alroy 2002; 2Stevens and Stevens 2003