Hsanda Gol, section SHG-C, layer 2 (Oligocene of Mongolia)

Also known as SHG-C/2, Valley of Lakes

Where: Övörkhangai, Mongolia (45.3° N, 101.7° E: paleocoordinates 46.7° N, 99.3° 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 135802: authorized by Johannes Mueller, entered by Torsten Liebrecht on 09.11.2012, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Salientia -
Anura indet. Fischer von Waldheim 1813 frog
 Squamata - Lacertidae
Lacertidae indet. Bonaparte 1831 squamates
 Squamata - Boidae
Calamagras sp. Cope 1873 dwarf boa
 Rodentia - Cricetidae
Ulaancricetodon badamae1 Daxner-Höck 2000 mouse
NHMW 1999z0083/0025/1
 Rodentia - Aplodontidae
Ninamys arboraptus3 Vianey-Liaud et al. 2013 mountain beaver
 Rodentia - Bathyergidae
Cyclomylus intermedius4 Wang 2001 mole rat
NHMW 2013/0514/0001
 Lagomorpha - Leporidae
Desmatolagus cf. orlovi2 Gureev 1960 rabbit