Stratigraphy and fusulinids of the Kasimovian and lower Gzhelian (upper Carboniferous) in the southwestern Darvaz (Pamir)

A detailed fusulinid biostrarigraphic zonation of the Kasimovian and lowerm ost Gzhelian in southwestern Darvaz is proposed. Based on the investigation of five stratigraphic sections, live local fusulinid zones were establishe d. These zones correlate with their chronostratigraphic equivalents in the East-European Platform and in the Urals, Arctic and Carnic Alps regions. Ei ghty-seven species and subspecies, which belong to 18 genera and 7 families of fusulinids, were identified in the Kasimovian and lowermost Gzhelian of Darvaz. Among them, two genera (Kushanella and Darvasoschwagerina), one su bgenus (Tumefactus), and 24 species are new ( i.e. Fusiella segyrdashtiensi s, Quasifusulina pseudotenuissima, Protriticites putrjai, P. compactus, Obs oletes darvasicus, Schwagerinoides (Schwagerinoides) pamiricus, Schw. (Tume factus) oblisus, Montiparus kushanicus, M. rauserae, M. pigmaeus, M. memora bilis, M. citreus, M. hirsutus, M. dubius, M. stuckenbergiformis, M. desine ns, Triticites umbonoplicatiformis, T. licis, Rauserites concinnus, R. jucu ndus, R darvasicus, Kushanella globosa, K. insueta, Darvasoschwagerina donb asica).