Where: Russian Federation (54.5° N, 52.2° E: paleocoordinates 26.5° N, 45.0° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Sheshmian Formation, Kungurian (279.3 - 272.3 Ma)
• Ufimian / Lower Kazanian beds, numbered A1/1 (Nurgaliev et al. 2015)
•The middle part of outcrop A1 is in Collection no. 197623, and the upper part is Collection no. 197624
Environment/lithology: marine; shale
•Package A1/1 Interval 0.0 - 5.0m Thickness (visible) 5.0m
•Sandstone: brownish-red, polymict, calcareous-muddy, fine-grained and medium-grained, cross-bedded or with disorderly structure, solid. Clastic grains: effusive rocks (50%), quartz (35%), feldspar (10%), and sporadic flakes of biotite. Most grains are coated with a film of iron hydroxides. The upper surface of the package is eroded and slightly undulated.
•Horizontally, 300m west of this station, the sandstone is replaced with variegated silty-argillaceous succession containing subordinate interbeds of light-grey, algal-microbial limestones. Laminated brownish-red shales contain rare non-marine bivalves and ostracods." (Nurgaliev et al. 2015)
Size class: macrofossils
Primary reference: D. K. Nurgaliev, V. V. Silantiev, and S. V. Nikolaeva. 2015. Type and reference sections of the Middle and Upper Permian of the Volga and Kama River Regions: A Field Guidebook of XVIII International Congress on Carboniferous and Permian. 1-208 [A. Dunhill/B. Allen/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 197622: authorized by Alex Dunhill, entered by Bethany Allen on 18.11.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Palaeomutela castor clam | |
| Ostracoda | |
|
Paleodarwinula sp. Molostovskaya 1990 ostracod | |