Ikh Argalatyn Nuruu , section IKH-A, layer 1 (Oligocene of Mongolia)

Also known as IKH-A/1, Valley of Lakes

Where: Övörkhangai, Mongolia (45.3° N, 102.1° E: paleocoordinates 46.3° N, 98.2° E)

• coordinate stated in text

• small collection-level geographic resolution

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

• Biozone B sensu Höck et al. (1999, Mitt. Österr. Geol. Ges. 90, 83-125). Biozone B is sandwiched between two Basalt layers that were 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 135793: 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
 Squamata -
Acrodonta indet. Cope 1864 squamates
 Rodentia - Cricetidae
Ulaancricetodon badamae1 Daxner-Höck 2000 mouse
NHMW 1999z0083/0009/3
Eocricetodon meridionalis5 Wang and Meng 1986 mouse
Eucricetodon asiaticus6 Matthew and Granger 1923 mouse
Eucricetodon caducus6 Shevyreva 1967 mouse
Eucricetodon bagus6 Gomes Rodrigues et al. 2012 mouse
 Rodentia - Dipodidae
Heosminthus sp.3 Wang 1985 rodent
NHMW 2013/0169/0001–0004
Heosminthus minutus2 Daxner-Höck 2001 rodent
NHMW 2001z0033/0007/1-2
Onjosminthus baindi3 Daxner-Höck et al. 2014 rodent
NHMW 2013/0190/0001
 Rodentia - Bathyergidae
Cyclomylus intermedius8 Wang 2001 mole rat
NHMW 2013/0489/0001-0003
Cyclomylus lohensis8 Matthew and Granger 1923 mole rat
NHMW 2013/0490/0001
 Rodentia - Zapodidae
Shamosminthus sodovis2 Daxner-Höck 2001 jumping mouse
NHMW 2001z0034/0010/1-6
 Lagomorpha - Ochotonidae
Sinolagomys major4 Bohlin 1937 pika
 Ungulata - Gelocidae
Pseudomeryx sp.7 Trofimov 1957 ruminant
NHMW 2001z0112/0001
Pseudogelocus mongolicus7 Vislobokova and Daxner-Höck 2002 ruminant
NHMW 2001z0073/0001
 Ungulata -
Prodremotherium sp.7 Filhol 1877 ruminant
NHMW 2001z 0092/0002
 Ungulata - Cervidae
Eumeryx sp.7 Matthew and Granger 1924 deer
NHMW 2001z0086/0001