Givetian and Frasnian ostracod associations from the Holy Cross Mountains
Jan Malec and Grzegorz Racki
Variable bioclastic-biostromal-marly Posłowice facies within the Late Givetian open-shelf Jaźwica Member in the SW part of the Holy Cross Mts contain palaeocopid-podocopid ostracod associations of moderate diversity (18 species)
dominated by Microcheilinella fecunda and Fellerites tuimazensis. More deepwater and stagnant environments of the Bolechowice micrite-marly facies, supported similarly differentiated (12 species) but less equitable associations with
platycopids Uchtovia refrathensis and palaeocopids Buregia jazwicensis as a main component. Other late Givetian, and Frasnian reef and lagoonal microfaunas are mostly impoverished (at least in generic terms) and strongly predominated by podocopids, mostly Bairdiocypris. Late Givetian associations from the Kostomłoty basin are marked by the metacopid Polyzygia symmetrica, and the planktic entomozoid Ungerella torleyi, Polenovula beckeri sp. n., Clavofabellina poslovicensis sp. n., Bureqia jazwciensis sp. n., and Bairdia zbikowskae sp. n. are proposed.
Key words: ostracods, taxonomy, paleoecology, Devonian, Poland.
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