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  1. When the Polish shale rocks were formed?

    ... fossil fauna species: brachiopods, nautiloids, bivalves, as well as by micro-fossils: ostracods, acritarchs and Chitinozoa, but none of ... environment, including oxygen conditions prevailing at the bottom of the sedimentary basin, and help identify aerobic and anaerobic ...

    Artykuł - 10/29/2014 - 13:22