Taatsiin Gol West, Valley of Lakes, Central Mongolia, section TGW-A (Oligocene of Mongolia)

Also known as Toglorhoi

Where: Bayankhongor, Mongolia (45.4° N, 101.1° E: paleocoordinates 46.5° N, 99.4° E)

• coordinate stated in text

When: C mammal zone, Loh Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)

• Biozone C sensu Höck et al. (1999, Mitt. Österr. Geol. Ges. 90, 83-125)

•Oroginal entry of Formation was >>Hsanda Gol<<. Table 2 in Daxner-Höck & Badamgarav (2007, Ann. Nat. Hist. Mus. Wien 108A, 1-14) says, however, that the locality Toglorhoi is within the Loh Formation. Entry was altered accordingly. (TL)

Environment/lithology: dry floodplain; gray, green, yellow, argillaceous sandstone and red, silty, sandy mudstone

• "The Loh Fm. probably reflects a fluvial system between a 'shallow, gravel-bed river' and a 'shallow, perennial, sand-bed braided river', but with restrictions to a more ephemeral character." Mudstones are interpreted as eolian dust deposits. (Höck et al., 1999)
• "The sediments of the Loh Fm. are dominantely trough cross-bedded, poorly sorted, polymict, matrix-supported gravels and sands. [...] Within the Loh Fm. several layers are of aeolian origin and are associated with caliche horizons, which show the same features as those in the Hsanda Gol sediments. Especially these aeolian deposits are rich in fossils, whereas the fluvial facies is poor in small mammals but contains large mammals." (Höck et al., 1999)

Size classes: macrofossils, mesofossils

Reposited in the NHMW

Collection methods: surface (float), sieve

Primary reference: R. Ziegler, T. Dahlmann, and G. Storch. 2007. 4. Marsupialia, Erinaceomorpha and Soricomorpha (Mammalia). 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:53-164 [L. van den Hoek Ostende/L. van den Hoek Ostende/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 75598: authorized by Lars van den Hoek Ostende, entered by Lars van den Hoek Ostende on 19.10.2007, edited by Philip Mannion and Pauline Coster

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Mammalia
 Artiodactyla -
 Artiodactyla - Gelocidae
Paragelocus aff. scotti1 Schlosser 1902 ruminant
 Theriamorpha - Erinaceidae
Amphechinus taatsiingolensis n. sp. Ziegler et al. 2007 hedgehog
Amphechinus taatsiingolensis1 Ziegler et al. 2007 hedgehog
 Lagomorpha - Leporidae
Desmatolagus cf. chinensis2 Erbajeva and Sen 1998 rabbit
NHMW2013/0334
 Rodentia - Bathyergidae
Tsaganomys altaicus1 Matthew and Granger 1923 mole rat
Coelodontomys asiaticus1 Wang 2001 mole rat
 Rodentia - Dipodidae
Bohlinosminthus parvulus1, "Allosminthus minutus" = Heosminthus minutus1
Bohlinosminthus parvulus1 Bohlin 1946 rodent
"Allosminthus minutus" = Heosminthus minutus1 Daxner-Höck 2001 rodent
 Rodentia - Cricetidae
Eucricetodon jilantaiensis3 Gomes Rodrigues et al. 2012 mouse
 Rodentia - Aplodontidae
Ninamys arboraptus1 Vianey-Liaud et al. 2013 mountain beaver
Proansomys badamae4 Maridet et al. 2017 mountain beaver