Olon Ovoony Khurem, section ODO-A, layer 6 (Miocene of Mongolia)

Also known as ODO-A/6, Valley of Lakes

Where: Bayankhongor, Mongolia (45.5° N, 101.1° E: paleocoordinates 46.2° N, 100.2° E)

• coordinate stated in text

• small collection-level geographic resolution

When: D1/1 mammal zone, Loh Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• Biozone D1/1 sensu Höck et al. (1999, Mitt. Österr. Geol. Ges. 90, 83-125)

• bed-level stratigraphic resolution

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 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 135789: authorized by Johannes Mueller, entered by Torsten Liebrecht on 09.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata -