Where: Arkangelsk, Russian Federation (65.6° N, 43.7° E: paleocoordinates 33.5° N, 33.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Iva-Gora Beds Formation, Roadian (272.5 - 268.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal; lithified, fine-grained sandstone

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by M. B. Edemskij in 1929; reposited in the PIN

Primary reference: A. V. Martynov. 1932. New Permian Palaeoptera with the discussion of some problems of their evolution. Trudy Paleontologicheskogo Instituta 1:1-44 [M. Clapham/J. Karr/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 104993: authorized by Matthew Clapham, entered by Matthew Clapham on 13.02.2011, edited by Jered Karr

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)