Shar Tsav West [HMNS-GIN] (Cretaceous of Mongolia)

Where: Omnogov, Mongolia (43.6° N, 107.8° E: paleocoordinates 42.3° N, 96.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Nemegt Formation, Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; lithified sandstone and mudstone

• Avimimus skeleton found in mudstone layer (1996, 2001 [femur]); "Avimimus were found from mudstone layers of the lower and middle parts of the section in this area. In the thick sandstone layers in middle to upper parts of the section, large-scaled convolution disturbance is observed. Ripple marks on the top surface of the hard sandstone layers show NE-SW trend (32.4 + 180 degree, N = 11). Paleocurrent direction based on trough cross-stratification in the hard sandstone layers indicates southwest, west, northwest, and north."

Size class: macrofossils

Collected by HMNS-GIN in 1996, 2001

Collection methods: surface (in situ), mechanical,

Primary reference: M. Watabe and S. Suzuki. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1996. Hayashibara Museum of Natural Sciences Research Bulletin 1:58-68 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 108341: authorized by Matthew Carrano, entered by Matthew Carrano on 28.04.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Theropoda -
Avimimus portentosus
Avimimus portentosus Kurzanov 1981 maniraptoran
960822 ShT ENK, SZK; 1 whole skeleton and 1 posterior part; "several skeletons"; a femur found in 2001; 040804 ShT-W SZK, Tsui; 010720 ShT-West Avimimus Ichin.