Khermin Tsav I, Upper White Beds [HMNS-GIN] (Cretaceous of Mongolia)

Also known as Khermeen Tsav

Where: Omnogov, Mongolia (43.5° N, 99.8° E: paleocoordinates 41.0° N, 88.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• From the Upper White Beds (NemegtFormation).

•from the "Upper White Beds" (ref 35934), which is confusing because the upper beds of the formation are usually called the "Red Beds" and ref 41448 says that the Red Bed is the fossiliferous layer.

•Nemegt Formation according to Suzuki et al. (2004)

• group of beds-level stratigraphic resolution

Environment/lithology: eolian; lithified, fine-grained, medium, red sandstone and massive mudstone

• "predominantly eolian and fluvio-lacustrine deposits"
• "well-sorted medium to fine, reddish to pale orange cemented sand beds and massive mud beds with conglomerates of gravel-sized clasts. The sediments in the reddish sand beds exhibit large-scale trough cross-bedding."

Size classes: macrofossils, mesofossils

Collected by HMNS-GIN in 1994, 1997, 2006

Primary reference: W. Watabe and S. Suzuki. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1994. Hayashibara Museum of Natural Sciences Research Bulletin 1:30-44 [R. Benson/R. Benson/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 55258: authorized by Matthew Carrano, entered by Matthew Carrano on 03.10.2005, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

• JMJPE explored here in 1994 and 1997, collected some partial skeletons of Tarbosaurus and Gallimimus, some footprints (natural casts) of theropod, egg nests and eggshells with various surface morphologies, many turtles, plant fossils (leaf impression) and molluscs (bivalves and gastropods)
 Mollusca -
Mollusca indet.2 mollusk
970708 KmT Johnson
 Osteichthyes -
Osteichthyes indet.3 Huxley 1880 bony fish
 Testudinata -
Testudinata indet.2 Oppel 1811 turtle
970705 KmT OTG, 970713 KmT SZK 18:07
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
940818 KmT-I GK
 Testudines - Lindholmemydidae
Gravemys sp.2 Sukhanov and Narmandakh 1983 turtle
rare at this locality; 970710 KmT NAR
Mongolemys sp.2 Khosatzky and Mlynarski 1971 turtle
970719 KmT
 Testudinata - Sichuanchelyidae
Mongolochelys efremovi1 Khosatzky 1997 turtle
rare at this locality
 Avetheropoda - Alvarezsauridae
Alvarezsauridae indet.3 Bonaparte 1991 coelurosaur
 Avetheropoda - Oviraptoridae
Ingenia sp.3 Barsbold 1981 coelurosaur
mass burial; 060906 KmT KHTB
 Avetheropoda - Tyrannosauridae
Tarbosaurus sp.2 Maleev 1955 tyrannosaurid
some partial skeletons; field no. 970716-18-KmT-Tarbo
 Avetheropoda - Dendroolithidae
Dendroolithidae indet.3 Zhao and Li 1988 coelurosaur
 Avetheropoda - Ornithomimidae
Gallimimus sp. Osmólska et al. 1972 ornithomimid
some partial skeletons of Gallimimus; 940817 KmT-I OTG
 Saurischia - Elongatoolithidae
Elongatoolithidae indet.3 Zhao 1975 theropod
egg nests and eggshells with various surface morphologies; 940816 KmT-I, 940817 KmT-I-N ENKH
 Ornithischia - Ankylosauridae
Tarchia sp.3 Maryanska 1977 ornithischian
postcranial skeleton
 Neornithischia - Protoceratopsidae
Protoceratopsidae indet.3 Granger and Gregory 1923 ornithischian
 Crocodylia -
Crocodylia indet.3 Owen 1842 crocodilian
 Squamata -
 Mammalia -
 Tracheophyta -
Tracheophyta indet.2
970713 KmT WTB 20:00, 970716 KmT SZK 10:24