Where: Russian Federation (55.0° N, 48.9° E: paleocoordinates 27.7° N, 43.3° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: 'Third' Formation, Wordian (268.8 - 265.1 Ma)
• Mostly Urzhumian beds; the upper 12m of the Third Formation are Severodvinian (Nurgaliev et al. 2015)
Environment/lithology: marine; sandstone and siltstone
•Different levels within the formation contain the remains of non-marine bivalves, ostracods, conchostracans, fishes and tetrapods, and the imprints and fragments of plants. Grey and brown siltstones 1-1.5m above the base of the formation contain coaly remains of the trunks of plants.
•The bed of reddish-brown and greenish-grey siltstone eight metres higher than the previous one contains ostracods, bivalves, rare scales of fishes, and rare amphibian vertebrae. The argillaceous limestone four metres above contains ostracods, the remains of complete fishes, a few small bivalves and conchostracans." (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 197595: authorized by Alex Dunhill, entered by Bethany Allen on 17.11.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
Equisetopsida | |
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Sphenopsida | |
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Bivalvia | |
Palaeomutela marposadica, Palaeomutela sp., Palaeomutela subparallela, Palaeomutela numerosa, Palaeomutela ulemensis, Palaeomutela wohrmani
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Ostracoda | |
Prasuchonella nasalis, Prasuchonella cf. stelmachovi, Paleodarwinula elongata, Paleodarwinula chramovi, Paleodarwinula teodorovichi, Paleodarwinula fainae
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Branchiopoda | |
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Chondrichthyes | |
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Osteichthyes | |
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Amphibia | |
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Osteichthyes | |
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Reptilia | |
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Osteichthyes | |
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