Urtyn Obo "Lower White" Beds (Eocene of China)

Also known as Aliusu; Baluchithere Camp; East Mesa; Erden Obo

Where: Nei Mongol, China (42.6° N, 111.3° E: paleocoordinates 43.6° N, 106.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ulan Gocho Formation, Ulangochuian (37.2 - 33.9 Ma)

• thought to be younger than the Irdin Manha, Shara Murun, and Ardyn Obo, and older than the Houldjin, Hsanda Gol, and Baron Sog

• member-level stratigraphic resolution

Environment/lithology: terrestrial; white siliciclastic sediments

• none given, other than white beds

Size class: macrofossils

Collected in 1928; reposited in the AMNH

Primary reference: H. F. Osborn. 1929. Embolotherium, gen. nov., of the Ulan Gochu, Mongolia. American Museum Novitates 353:1-20 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 73808: authorized by John Alroy, entered by John Alroy on 30.06.2007, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Perissodactyla - Brontotheriidae
Embolotherium sp. Osborn 1929 brontothere
 Perissodactyla - Chalicotheriidae
Schizotherium cf. avitum1 Matthew and Granger 1923 chalicothere
AMNH 26061
 Creodonta - Hyaenodontidae
Hyaenodon incertus2 Dashzeveg 1985 creodont
AMNH 26068
Hyaenodon pervagus2 Matthew and Granger 1924 creodont
AMNH 26069