Also known as Amgu River; Kudya River

Where: Russian Federation (45.8° N, 137.7° E: paleocoordinates 47.5° N, 134.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Khutsin Formation, Rupelian (33.9 - 28.1 Ma)

• Initially considered Lower Miocene, but now thought to be Oligocene or even Eocene. Rupelian age proposed based on flora and correlation with Voznovo flora (Pavlyutkin et al., 2011).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified shale

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected by A. Kuznetzov; reposited in the USNM

Primary reference: T. D. A. Cockerell. 1925. Fossil insects in the United States National Museum. Proceedings of the United States National Museum 64(13):1-15 [C. Labandeira/C. Labandeira/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122745: authorized by Matthew Clapham, entered by Matthew Clapham on 05.01.2012

Creative Commons license: CC BY (attribution)