Chalk Gap Draw (Eocene of the United States)

Also known as TMM 40840; Little Egypt L.F. in part

Where: Presidio County, Texas (29.9° N, 104.2° W: paleocoordinates 31.3° N, 96.7° W)

• coordinate based on political unit

When: Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Reposited in the TMM

Primary reference: J. A. Wilson. 1977. Stratigraphic Occurrence and Correlation of Early Tertiary Vertebrate Faunas Trans-Pecos Texas. Part I: Vieja Area. Texas Memorial Museum Bulletin 25:1-42 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 16931: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• county given by Gustafson 1986b
Mammalia
 Perissodactyla -
Toxotherium hunteri1 Wood 1961 odd-toed ungulate
 Perissodactyla - Brontotheriidae
Menops bakeri1 Stovall 1948 brontothere
 Perissodactyla - Equidae
Mesohippus texanus3 McGrew 1971 anchitheriine horse
apparently overlooked by Wilson 1977b
 Artiodactyla - Entelodontidae
Archaeotherium cf. mortoni Leidy 1850 even-toed ungulate
see Wilson 1971b
 Artiodactyla - Oromerycidae
Eotylopus cf. reedi Matthew 1910 even-toed ungulate
described by Wilson 1974
 Artiodactyla - Merycoidodontidae
"Merycoidodon dunagani" = Aclistomycter dunagani
"Merycoidodon dunagani" = Aclistomycter dunagani Wilson 1971 oreodont
 Placentalia -
Carnivora indet.2 Bowdich 1821 carnivoran
"Felidae ? or Nimravidae ?"
 Rodentia - Cylindrodontidae
Pseudocylindrodon texanus n. sp. Wood 1974 rodent
see Wood 1974
Gastropoda
 Stylommatophora - Camaenidae
Pleurodonte (Pleurodonte) wilsoni n. sp.4 Roth 1984 slug