Tsagan-Nur (PIN collection 4078) (Cretaceous of Mongolia)

Also known as Tsagaan-Nuur

Where: Mongolia (51.3° N, 99.3° E: paleocoordinates 52.0° N, 97.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Turga Formation, Early/Lower Aptian (121.4 - 122.5 Ma)

• Correlative with the Zaza Formation and most likely with upper Yixian or lower Jiufotang Formation, therefore an Aptian (probably early Aptian) age.

Environment/lithology: lacustrine; tuffaceous mudstone

Size class: mesofossils

Preservation: mold/impression, adpression

Reposited in the PIN

Primary reference: A. G. Ponomarenko. 1990. Beetles, Scarabaeida, in Pozdne-Mezozoyskie Nasekomye Vostochnogo Zabaykal'ya. In A.P. Rasnitsyn (ed.), Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 239:39-82 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152166: authorized by Matthew Clapham, entered by Matthew Clapham on 10.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Coleoptera - Liadytidae
Liadytes crassus Ponomarenko 1977 beetle
PIN 4078/12
 Coleoptera - Gyrinidae
Mesogyrus striatus Ponomarenko 1973 whirligig beetle
PIN 4078/13
 Coleoptera - Carabidae
"Holcorobeus incertus n. sp." = Antemnacrassa incerta
"Holcorobeus incertus n. sp." = Antemnacrassa incerta Ponomarenko 1990 ground beetle
PIN 4078/4