Where: Russian Federation (72.7° N, 124.3° E: paleocoordinates 63.9° N, 18.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nordophiceras contrarium ammonoid zone, Spathian (251.3 - 247.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: A. S. Dagis and S. P. Ermakova. 1988. Boreal'nye Pozdneolenekskie Ammonoidei. Trudy Instituta Geologii i Geofiziki 714:1-135 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123382: authorized by Matthew Clapham, entered by Matthew Clapham on 20.01.2012

Creative Commons license: CC BY (attribution)