Dzamyn Ude, Quarry 1 Ergilin Dzo Formation (Eocene of Mongolia)

Also known as Borhoyn Tal

Where: Dornogov, Mongolia (43.8° N, 111.9° E: paleocoordinates 45.2° N, 107.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ergilin Member (Ergilin Dzo Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• quarry is 3.5-3.8 m deep

Environment/lithology: fluvial-lacustrine; poorly lithified, yellow conglomerate and poorly lithified claystone

• yellow gravels interbedded with fine clays

Size class: macrofossils

Primary reference: D. Dashzeveg. 1996. A new hyracodontid (Perissodactyla, Rhinocerotoidea) from the Ergilin Dzo Formation (Oligocene, Quarry 1) in Dzamyn Ude, Eastern Gobi Desert, Mongolia. American Museum Novitates 3178:1-12 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38303: authorized by John Alroy, entered by Erin Leckey on 19.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Brontotheriidae
Embolotherium sp. Osborn 1929 brontothere
 Perissodactyla - Amynodontidae
Cadurcodon ardynensis Osborn 1924 odd-toed ungulate
 Perissodactyla - Hyracodontidae
Prohyracodon obrutschewi n. sp. Dashzeveg 1996 odd-toed ungulate
 Hyaenodonta - Hyaenodontidae
Hyaenodon sp. Laizer and Parieu 1838 eutherian