Donna's Locality (Eocene of the United States)

Also known as University of Colorado Museum Loc. 92189; Cedar Mountain

Where: Uinta County, Wyoming (41.1° N, 110.1° W: paleocoordinates 43.9° N, 99.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Turtle Bluff Member (Bridger Formation), Early/Lower Uintan (46.2 - 39.7 Ma)

• "two meters above the base of the Turtle Bluff Member" eight meters above the Basal E Tuff, which is dated at "46.16 ± 0.44 Ma using 40Ar/39Ar analysis"; "earliest Uintan" based on faunal composition

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; claystone

• Turtle Bluff Member consists of "predominant variegated red, green, and gray claystone and mudstone with lesser amounts of grayish-white tuffaceous sandstone and gray and brown limestone, and with high gypsum content" and bed is shown as a claystone in an illustrated section

Size class: macrofossils

Collected by D. Engard in 1992; reposited in the UCM

Primary reference: P. C. Murphey and R. H. Dunn. 2009. Hemiacodon engardae, a new species of omomyid primate from the earliest Uintan Turtle Bluff Member of the Bridger Formation, southwestern Wyoming, USA. Journal of Human Evolution 57(2):123-130 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93087: authorized by John Alroy, entered by John Alroy on 01.01.2010, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• only selected taxa are reported
Mammalia
 Cimolesta - Apatemyidae
Apatemys bellulus1 Marsh 1872 eutherian
Apatemys rodens1 Troxell 1923 eutherian
 Condylarthra - Hyopsodontidae
Hyopsodus lepidus1 Matthew 1909 condylarth
 Theriamorpha - Viverravidae
Viverravus gracilis1 Marsh 1872 placental
 Perissodactyla - Hyracodontidae
Triplopus cf. obliquidens1 Scott and Osborn 1887 odd-toed ungulate
 Artiodactyla - Homacodontidae
Homacodon cf. vagans1 Marsh 1872 even-toed ungulate
 Artiodactyla - Oromerycidae
? Merycobunodon walshi n. sp.1 Murphey and Kelly 2017 even-toed ungulate
said to be a new genus
 Theriamorpha - Geolabididae
Centetodon bembicophagus1 Lillegraven et al. 1981 placental
Centetodon pulcher1 Marsh 1872 placental
 Theriamorpha - Nyctitheriidae
Pontifactor bestiola1 West 1974 placental
"Scenopagus priscus" = Nyctitherium priscum1 Marsh 1872 placental
"Scenopagus curtidens" = Nyctitherium curtidens1 Matthew 1909 placental
Nyctitherium velox1 Marsh 1872 placental
Nyctitherium gunnelli1 Murphey and Kelly 2017 placental
 Theriamorpha - Oligoryctidae
Oligoryctidae indet.1 Asher et al. 2002 placental
"unnamed apternodontid sp."
 Theriamorpha - Erinaceidae
Entomolestes westgatei n. sp.1 Murphey and Kelly 2017 hedgehog
 Rodentia - Eomyidae
Metanoiamys sp. Chiment and Korth 1996 rodent
 Primates - Omomyidae
Hemiacodon engardae n. sp. Murphey and Dunn 2009 tarsier
 Theriamorpha - Peradectidae
Peradectes chesteri2 Gazin 1952 marsupial
 Theriamorpha - Herpetotheriidae
Herpetotherium knighti2 McGrew et al. 1959 marsupial