Where: Russian Federation (55.8° N, 48.9° E: paleocoordinates 28.3° N, 42.8° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Ribbon Marls Member (Isheevo Formation), Wordian (266.9 - 264.3 Ma)
• Urzhumian beds, numbered P05/101 - P05/107 from bottom to top; the lower half of the section is Collection no. 197587 (Nurgaliev et al. 2015)
Environment/lithology: marine; shale and marl
•Packages P05/101 - 107 Interval 47.00-53.85m Thickness (visible) 6.85m
•Sandy-loamy member with ribbon (banded) marls. Shales: brown, reddish-brown, pinkish, yellowish, compact, mainly thinly horizontally or lenticular laminated with laminae of greenish-grey fine-grained sandstone and brown siltstone. The middle part of the member contains several beds (each of 0.4m) of yellowish-grey and pinkish-grey (ribbon), horizontally thinly laminated, platy marls. Shales and marls contain numerous reamins of conchostrachans, ostracods and fish remains.
•The upper beds of the Ribbon Marls Member and its contact with the overlaid Crimson Shale Member are observed in outcrop P06 (no collection due to lack of fossils)." (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 197589: authorized by Alex Dunhill, entered by Bethany Allen on 17.11.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
| Branchiopoda | |
|
Conchostraca indet. clam shrimp | |
| Ostracoda | |
Paleodarwinula fragiliformis, Paleodarwinula elongata, Paleodarwinula obvia, Paleodarwinula arida, Prasuchonella nasalis
Paleodarwinula fragiliformis ostracod
Paleodarwinula elongata ostracod
Paleodarwinula obvia ostracod
Paleodarwinula arida ostracod
Prasuchonella nasalis ostracod | |
| Bivalvia | |
|
| |