Evolution of coal-forming plants and floristic restorability of upper paleozoic coals

The floristic similarity of coal-bearing deposits of Donetsk, Karaganda, Pechora and Kuznetsk basins is caused by evolution of coal-forming plants of upper Paleozoic and is reflected in the petrographic composition of coals. Plant mass of peat bogs with high content of proteins and lipids become the cause of floristic restorability (Prfl) under the influence of climatic, paleogeographic factors and the evolution of plants. Indicators Pg (degree of coal gelification) and Prfl (degree of coal restorability) are proved to reveal features of sedimentogenesis of different coals basins better than petrographic composition indexes do.