Also known as Amgu River

Where: Russian Federation (45.9° N, 137.6° E: paleocoordinates 47.6° N, 134.6° 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.P. Rasnitsyn in 1970; reposited in the PIN

Primary reference: V. N. Makarkin. 1991. Miocene insects (Neuroptera) from the northern Caucasus and Sikhote-Alin. Paleontological Journal 25(1):55-65 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123524: authorized by Matthew Clapham, entered by Matthew Clapham on 25.01.2012

Creative Commons license: CC BY (attribution)