Taatsiin Gol, right side, section TGR-A, layer 14 (Oligocene of Mongolia)

Also known as TGR-A/14, Valley of Lakes

Where: Övörkhangai, Mongolia (45.4° N, 101.3° E: paleocoordinates 46.9° N, 98.8° E)

• coordinate stated in text

• small collection-level geographic resolution

When: A mammal zone, Hsanda Gol Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• Biozone A sensu Höck et al. (1999, Mitt. Österr. Geol. Ges. 90, 83-125). Biozone A is capped by a Basalt layer that has been dated by means of 40Ar/39Ar method (see Höck et al., 1999).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; red, silty mudstone

• The fines of the Hsanda Gol Fm. are interpreted as eolian dust and playa sediments, deposited on an arid plain (Höck et al., 1999).
• The Hsanda Gol Fm. mainly consists of "brick red" poorly sorted mudstones (Höck et al., 1999).

Size class: mesofossils

Collected by joint Austrian-Mongolian project in 1995-1997, 2001, 2004, 2006; reposited in the NHMW

Collection methods: sieve

Primary reference: M. Böhme. 2007. 3. Herpetofauna (Anura, Squamata) and palaeoclimatic implications: preliminary results. In G. Daxner-Höck (ed.), Oligocene-Miocene Vertebrates from the Valley of Lakes (Central Mongolia): Morphology, phylogenetic and stratigraphic implications. Annalen des Naturhistorischen Museums in Wien 108A:43-52 [J. Mueller/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 135806: authorized by Johannes Mueller, entered by Torsten Liebrecht on 09.11.2012, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Lacertidae
Lacerta "sp. 1" Linnaeus 1758 squamates
 Rodentia - Cricetidae
Ulaancricetodon badamae1 Daxner-Höck 2000 mouse
Paracricetodon sp.3 Young 1925 mouse
Eucricetodon caducus4 Shevyreva 1967 mouse
 Rodentia - Dipodidae
Onjosminthus baindi2 Daxner-Höck et al. 2014 rodent
NHMW 2013/0181/0001–0004
 Rodentia - Ctenodactylidae
Karakoromys decessus5 Matthew and Granger 1923 gundi
NHMW 2006z110/0001