Ikh Argalatyn Nuruu, IKH-B/5 (Oligocene of Mongolia)

Also known as Valley of Lakes

Where: Övörkhangai, Mongolia (45.3° N, 102.1° E: paleocoordinates 45.9° N, 99.0° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: C1 mammal zone, Hsanda Gol Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)

• 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

Reposited in the NHMW

Collection methods: sieve

Primary reference: G. Daxner-Höck, D. Badamgarav, and O. Maridet. 2015. Evolution of Tachyoryctoidinae (Rodentia, Mammalia): evidences of the Oligocene and Early Miocene of Mongolia. Annalen des Naturhistorischen Museums in Wien, Serie A 117:161-195 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 182076: authorized by Philip Mannion, entered by Philip Mannion on 10.10.2016, edited by Pauline Coster

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia - Bathyergidae
Tsaganomys altaicus2 Matthew and Granger 1923 mole rat
 Rodentia - Ctenodactylidae
Yindirtemys deflexus4 Teilhard de Chardin 1926 gundi
 Rodentia - Dipodidae
Bohlinosminthus parvulus1 Bohlin 1946 rodent
NHMW 2013/0217/0000
 Rodentia - Muridae
Tachyoryctoides obrutschewi Bohlin 1937 mouse
NHMW 2013/0451/0001
 Rodentia - Cricetidae
Cricetidae indet.2 Fischer von Waldheim 1817 mouse
Eucricetodon bagus3 Gomes Rodrigues et al. 2012 mouse
 Lagomorpha - Leporidae
Desmatolagus cf. chinensis2 Erbajeva and Sen 1998 rabbit
 Lagomorpha - Ochotonidae
Sinolagomys sp.2 Bohlin 1937 pika
 Theriamorpha - Erinaceidae
Amphechinus major2 Ziegler et al. 2007 hedgehog
 Theriamorpha - Soricidae
Gobisorex kingae2 Sulimski 1970 shrew
 Artiodactyla - Palaeomerycidae
Amphitragulus sp.5 Pomel 1847 ruminant
NHMW 2001z0091/0001-0003
 Artiodactyla - Bovidae
? Gobiocerus sp.5 Sokolov 1952 antelope
NHMW 2001z 0095/0001