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Lower Viséan (Lower Carboniferous) rugose corals from the Donets Basin (Ukraine)
Ohar, V.; Denayer, J. (2021). Lower Viséan (Lower Carboniferous) rugose corals from the Donets Basin (Ukraine). Revista Brasileira de Paleontologia 24(4): 281-310. https://dx.doi.org/10.4072/rbp.2020.4.01
In: Revista Brasileira de Paleontologia. Soc Brasileira Paleontologia: Sao Leopoldo. ISSN 1519-7530; e-ISSN 2236-1715, meer
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Mississippian; Visean; corals; paleobiogeography; Ukraine |
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- Ohar, V.
- Denayer, J., meer
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| Abstract |
Rugose corals are described from the lower Viséan of the Donets Basin. The new coral Dorlodotidae fam. nov. and the species Cyathoclisia sukhensis sp. nov. are here introduced and the presence of the genera Amygdalophyllum and Ceriodotia are established for the first time in the Donets Basin. The priority of the generic name Protolonsdaleia over Eolithostrotionella is discussed. The lower Viséan rugose coral assemblage of the Donets Basin differs from those of the upper Tournaisian and upper Viséan. Global and regional events may have led to abrupt changes in sedimentation conditions at the end of the Tournaisian time and at the beginning of the late Viséan. The colonial rugose corals Siphonodendron, Dorlodotia, Protolonsdaleia and Ceriodotia appear in the early Viséan of the Donets Basin as in many other
regions of Eurasia. The similarity of the lower Viséan coral assemblage of the Donets Basin with that of the Western Paleotethys is noted but at the same time, there are significant differences with the regions of the Eastern Paleotethys. This is due to the presence of a possible paleogeographic barrier located to the eastern part of Laurussia hindering the migration of corals. |
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