Gurilin Tsav, eastern badlands [HMNS-GIN] (Cretaceous of Mongolia)

Also known as Gurlin Tsav, Guriliin Tsav

Where: Omnogov, Mongolia (43.9° N, 100.2° E: paleocoordinates 41.5° N, 89.2° E)

• coordinate stated in text

• outcrop-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: fluvial; paleosol/pedogenic, concretionary sandstone and mudstone

• "fluvial and possibly eolian origin"
• "alternation of sandstone and mudstone layers. Thick sandstone layers are developed in the upper part of geologic section of this locality. Those layers might be partly of eolian origin. In the beds paleosol (calcareous concretions) are frequently developed. The paleocurrent direction observed in the trough-cross-stratification in sandstone layers shows south, southwest, and west"

Size classes: macrofossils, mesofossils

Preservation: concretion

Collected by HMNS-GIN in 2006

Collection methods: surface (float), surface (in situ),

• HMNS-Hayashibara Museum of Natural Sciences

Primary reference: Y. Ariunchimeg. 1997. Results of studies of dinosaur eggs. Abstract of Report Meeting, Mongolia-Japan Joint Paleontological Expedition 13 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 168417: authorized by Matthew Carrano, entered by Matthew Carrano on 22.04.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

 Vertebrata -
Vertebrata indet.3 vertebrate
"small vertebrates in concretions"
Reptilia
 Dinosauria -
Dinosauria indet.3 Owen 1842 dinosaur
isolated bones
 Ornithischia -
Ankylosauria indet.4 Osborn 1923 ankylosaur
 Ornithischia - Hadrosauridae
Hadrosauridae indet.4 Cope 1869 hadrosaurid
 Theropoda -
Coelurosauria indet.3 Huene 1914 coelurosaur
isolated bones of "small arctometatarsalian" dinosaurs
Aves
 Aves -
Reptilia
 Avetheropoda -
Carnosauria indet.4 Huene 1920 carnosaur
 Theropoda - Elongatoolithidae
Macroolithus yaotunensis Zhao 1975 theropod
eggs and eggshells
 Pterosauria - Azhdarchidae
? Azhdarchidae indet.2 Nessov 1984 pterosaur
MPC-D 100/116–100/118
 Testudinata - Sichuanchelyidae
Mongolochelys sp.1 Khosatzky 1997 turtle
 Squamata -
Mammalia
 Mammalia -