PBDB Collection

Tsagaan Khutel (Eocene of Mongolia)

Also known as Tsagan Khutel; Tsagan-Khutel; Valley of Lakes; 2 km east of Bogdo

Where: Mongolia (45.2° N, 100.7° E: paleocoordinates 46.5° N, 95.3° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Kholboldchi Formation, Middle Eocene (47.8 - 37.7 Ma)

• Kholboldzhi Svita

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; medium-grained, coarse, gray, green sandstone

• Coarse and medium-grained sands that are often poorly sorted. The sands are often greenish-grey in color, and may contain intercalations of gravels, silts, and muds

Size classes: macrofossils, mesofossils

Collected in 1963-onwards; 2004–2006

Primary reference: B. P. Kraatz, D. Badamgarav, and F. Bibi. 2009. Gomphos ellae, a new mimotonid from the middle Eocene of Mongolia and its implications for the origin of Lagomorpha. Journal of Vertebrate Paleontology 29(2):576-583 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 174724: authorized by Philip Mannion, entered by Philip Mannion on 25.11.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Mammalia
Cimolesta - Coryphodontidae	Eudinoceras kholbolchiensis Eudinoceras kholbolchiensis pantodont Based on Osborn and Granger, 1931
Cimolesta - Pantolambdodontidae	Archaeolambda prima Archaeolambda prima pantodont Based on Dashzeveg, 1980
Perissodactyla - Lophialetidae	? Lophialetes sp., Schlosseria sp. ? Lophialetes sp. Matthew and Granger 1925 odd-toed ungulate Based on Russell and Zhai, 1987 Schlosseria sp. Matthew and Granger 1926 odd-toed ungulate Based on Russell and Zhai, 1987
Perissodactyla - Hyracodontidae	Rhodopagus sp. Rhodopagus sp. Radinsky 1965 odd-toed ungulate Based on Reshetov, 1975
Perissodactyla - Deperetellidae	Irdinolophus tuiensis n. sp.¹ Irdinolophus tuiensis n. sp.¹ Dashzeveg and Hooker 1997 odd-toed ungulate PSS 13-15 - type
Theriamorpha - Pantolestoidae	Bogdia orientalis n. gen. n. sp.² Bogdia orientalis n. gen. n. sp.² Dashzeveg and Russell 1985 placental PSS 13-5 - holotype; referred material: PSS 13-6
Glires - Mimotonidae	Gomphos ellae n. sp. Gomphos ellae n. sp. Kraatz et al. 2009 placental MPC 30/1 - type

¹Dashzeveg and Hooker 1997; ²Dashzeveg and Russell 1985