Yamaan-Us (PIN collection 5006) (Permian of Mongolia)

Where: Mongolia (42.9° N, 105.4° E: paleocoordinates 40.6° N, 87.4° E)

When: Yamaan Us Formation, Changhsingian (254.2 - 252.2 Ma)

Environment/lithology: terrestrial; lithified siliciclastic sediments

• The Upper Permian coal bearing sequences (and presumably the Yaman Us Formation, which is primarily Permian) are believed to have been deposited in continental basins related to folding and thrust faulting following the closure of a paleo-asian ocean and docking of a Carboniferous island arc complex.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Primary reference: D. S. Aristov. 2005. New Grylloblattids (Insecta: Grylloblattida) from the Triassic of Eastern Europe, Eastern Kazakhstan and Mongolia. Paleontological Journal 39:173-177 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 105054: authorized by Matthew Clapham, entered by Matthew Clapham on 14.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Reculida - Chaulioditidae
Chauliodites mongolicus n. sp. Aristov 2005 winged insect
PIN 5006/1, 2
 Hemiptera - Scytinopteridae
Beloscyta edi n. gen. n. sp.
Beloscyta edi n. gen. n. sp. Shcherbakov 2022 true bug
PIN 5006/17, 18