Blue Cliff Horizon (Eocene of the United States)

Also known as Rifle Range Hollow; TMM 40688; Porvenir L.F. (in part)
DUPLICATE REF 3664 or 3665

Where: Presidio County, Texas (29.9° N, 104.2° W: paleocoordinates 31.6° N, 95.9° W)

• coordinate based on political unit

When: Duchesnean (40.4 - 37.2 Ma)

Environment/lithology: terrestrial

Reposited in the TMM

Primary reference: J. A. Wilson. 1977. Early Tertiary Vertebrate Faunas Big Bend Area Trans-Pecos Texas: Brontotheriidae. Pearce-Sellards Series 25 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 16835: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• 0-88 ft above "lower marker bed" in the Chambers Tuff
Wilson and Schiebout 1984 say that TMM 40688 is the Reeves Bonebed, but this is surely an error
identity of "Caenopus sp." is completely ambiguous as genus is invalid and no useful comparisons are drawn by Wilson and Schiebout 1984; FMNH specimen
unclassified
  -
Mammalia
 Theriamorpha - Leptictidae
Leptictis douglassi n. sp.4 Novacek 1976 eutherian
TMM 40688
 Creodonta - Hyainailouridae
Hemipsalodon viejaensis2 Gustafson 1986 creodont
TMM 40688; FMNH
 Creodonta - Hyaenodontidae
Hyaenodon crucians2 Leidy 1853 creodont
TMM 40688; FMNH
Hyaenodon montanus2 Douglass 1902 creodont
TMM 40688
 Carnivora - Amphicyonidae
"Miacis australis n. sp." = Angelarctocyon australis2, Daphoenictis sp.1
"Miacis australis n. sp." = Angelarctocyon australis2 Gustafson 1986 bear-dog
FMNH
Daphoenictis sp.1 Hunt 1974 bear-dog
 Perissodactyla - Equidae
Mesohippus texanus McGrew 1971 anchitheriine horse
TMM 40688; FMNH: McGrew 1971 DUPLICATE REF 3664 or 3665
 Perissodactyla - Amynodontidae
Metamynodon chadronensis1 Wood 1937 odd-toed ungulate
 Perissodactyla - Rhinocerotidae
Penetrigonias dakotensis5 Peterson 1920 rhinoceros
TMM 40688
 Perissodactyla -
? Toxotherium sp.6 Wood 1961 odd-toed ungulate
FMNH
 Perissodactyla - Hyracodontidae
Hyracodon medius1 Peterson 1934 odd-toed ungulate
 Perissodactyla - Tapiridae
Colodon stovalli1 Wilson and Schiebout 1984 tapir
 Perissodactyla - Brontotheriidae
Duchesneodus uintensis1 Peterson 1931 brontothere
 Artiodactyla - Oromerycidae
Oromeryx sp. Marsh 1894 even-toed ungulate
TMM 40688: Wilson 1974 DUPLICATE REF 3664 or 3665
Eotylopus cf. reedi Matthew 1910 even-toed ungulate
FMNH DUPLICATE REF 3664 or 3665
 Artiodactyla - Entelodontidae
Brachyhyops viensis1 Russell 1980 even-toed ungulate
 Artiodactyla - Leptomerycidae
"Leptomeryx defordi" = Hendryomeryx defordi
"Leptomeryx defordi" = Hendryomeryx defordi Wilson 1974 ruminant
 Artiodactyla - Agriochoeridae
Protoreodon pumilus Marsh 1875 agriochoerid
TMM 40688 DUPLICATE REF 3664 or 3665
Agriochoerus antiquus Leidy 1850 agriochoerid
DUPLICATE REF 3664 or 3665
 Primates -
Rooneyia viejaensis n. gen. n. sp.
Rooneyia viejaensis n. gen. n. sp. Wilson 1966 primate
TMM 40688 DUPLICATE REF 3664 or 3665