Sylva River, outcrop above Yulaevo village (Zalessky material) (Permian of Russian Federation)

Where: Russian Federation (57.0° N, 57.7° E: paleocoordinates 30.4° N, 45.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Koshelevka Formation, Kungurian (279.3 - 272.3 Ma)

• Irenian

• group of beds-level stratigraphic resolution

Environment/lithology: deltaic; lithified siliciclastic sediments

• Uralian foreland basin. Alluvial to marine delta-fan environment, close to the sea, deposited under arid climate conditions.

Size class: macrofossils

Preservation: mold/impression

Collected by G.T. Mauer

• Repository: Specimens likely kept in the Vernadsky State Geological Museum (Moscow), with other fossil insects described by Zalessky

Primary reference: G. M. Zalessky. 1939. Permskie nasekomye basseyna reki Sylvy i voprosy evolyutsii v klasse nasekomykh III. Novye predstaviteli Protohymenoptera, Homoptera, Hemipsocoptera, Psocoptera, Protoperlaria, Isoptera i Protoblattoidea. Problemy Paleontologii 5:33-91 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 155817: authorized by Matthew Clapham, entered by Matthew Clapham on 02.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Diaphanopterodea - Asthenohymenidae
Asthenohymen uralicum n. sp., Asthenohymen minutum n. sp.
Asthenohymen uralicum n. sp. Zalessky 1939 winged insect
E.F. Chirkovaya 1937
Asthenohymen minutum n. sp. Zalessky 1939 winged insect
G.T. Mauer 1935 Nr. 8