Premise of research. Resolving the time and patterns origination Isoetales that thrived in wet habitats late Paleozoic have extant representatives genus Isoetes requires a better understanding their early members precursors. Recent studies conducted for large part South China acknowledged diversification Middle to Late Devonian taxa possessed isoetalean traits either were closely related or occ...

Accurate palyno-analysis by S. Loboziak (from 1980 to 1983) of 28 samples from the Upper Givetian Middle Frasnian Blacourt, Beaulieu and Ferques Formations 44 Lower Famennian Hydrequent Formation are re-evaluated. Chelinospora concinna, Verrucosisporites bulliferus, Cirratriradites jekhowskyi, Lophozonotriletes media first occurrences major criteria for Frasnian, well calibrated conodonts. Cymb...

Coombs Hill, a new fossil locality in the Witpoort Formation (Witteberg Group) of South Africa, preserves record Famennian (Late Devonian) life Gondwana. Fossil plants collected at Hill are preliminarily assigned to several classes. Shelly invertebrates include variety bivalve mollusc forms, some which appear be preserved position. Biodiversity is comparable that well-known Waterloo Farm lagers...

Various genetic and morphological types of voids in carbonate reservoirs make it difficult to diagnose them, which can be seen the determination reservoir properties northern marginal shear zone Caspian Syneclise. A macro- microscopic study rocks was carried out by staining carbonates thin sections with alizarin (determination mineral composition, structure, texture, void fracture spaces, rock ...