Where: Ukraine (48.3° N, 39.8° E: paleocoordinates 7.2° N, 34.3° E)
• coordinate estimated from map
When: Smedvinskaya Formation, Kashirian (313.8 - 311.4 Ma)
• as with most Pennsylvanian sections in the Donets Basin, fine-grained sandstones, siltstones, shales, coal seams, and limestones alternate cyclically
•
•a useful nomenclatural scheme specific to the Donets Basin was developed by Ukrainian geologists at the end of the nineteenth century. The Carboniferous sequence is divided into suites designated by letters. Capital letters refer to major marine limestones and numerals indicate stratigraphic order. Subordinate limestones with minor thickness overlying a major limestone are designated by a superscript numeral. Lower case letters indicate the coal seams of a suite, also with numbers for stratigraphic order.
•The Moscovian Stage in the Donets Basin comprises the upper part of the K (C low2 upper5 ) suite, the L (C low2 upper6) suite, the M (C low2 upper7) suite, and the lower part of the N (C low3 upper1) suite.
•The Izvarino section is continuosly exposed along the railway and ranges from limestone L (low4) to M (low1)
Environment/lithology: marine; wackestone and shale
Size classes: mesofossils, microfossils
• high diversity of brachiopods, algae (Epimastoporella, Archaeolithophyllum, Ungdarella, Cuneiphycus), gastropods, and rare trilobites, commonly coated
Collected in Okt. 1999
Primary reference: B. Fohrer, T.I. Nemyrovska, E. Samankassou and K. Ueno. 2007. The Pennsylvanian (Moscovian) Izvarino Section, Donets Basin, Ukraine: a multidisciplinary study on microfacies, biostratigraphy (conodonts, foraminifers, and ostracodes), and paleoecology. Journal of Paleontology 81(5):1-85 [B. Seuss/B. Seuss/B. Seuss]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 216041: authorized by Barbara Seuss, entered by Barbara Seuss on 04.12.2020
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Conodonta | |
Idiognathodus praeobliquus conodont
Idiognathodus izvaricus conodont | |
Gastropoda | |
Gastropoda indet. Cuvier 1795 snail | |
Ostracoda | |
Moorites aff. punktus ostracod | |
Chamishaella aff. sparsa ostracod | |
Amphissites (Amphikegelites) sp. ostracod
Amphissites (Amphissites) cf. rugosus Girty 1910 ostracod | |
Jordanites krasnodonensis n. sp., Hollinella (Praehollinella) kamenka n. sp., Hollinella (Hollinella) granuloba n. sp., Hollinella (Hollinella) sp.
Hollinella (Hollinella) sp. Coryell 1928 ostracod | |
Asturiella donbassica n. sp.
| |
Healdia aff. canyensis ostracod
? Healdia sp. Roundy 1926 ostracod | |
Bairdia aff. oklahomensis ostracod
Bairdiacypris (Fabelicypris) sp. Bradfield 1935 ostracod | |
Pseudobythocypris pediformis Knight 1928 ostracod | |
Cavellina recta ostracod | |
Cuneiphycus | |
Cuneiphycus sp. Johnson 1960 | |
Chlorophyceae | |
Epimastoporella sp. Roux 1979 | |
Rhodophyceae | |
Ungdarella sp. Maslov 1956 | |
Florideophyceae | |
Archaeolithophyllum sp. Johnson 1956 | |
Foraminifera | |
Neostaffella (Neostaffella) ozawai Lee and Chen 1930 | |
Pseudostaffella (Pseudostaffella) compressa Rauser-Chernousova 1938 | |