Abstract
Abstract. Jurassic (Bathonian–Oxfordian) planktic foraminifera from the
epicontinental strata of the Polish Basin have been investigated. The
palaeoecology, palaeobiogeography, and biostratigraphical potential of the
recorded taxa are discussed. Four species are recorded: Conoglobigerina helvetojurassica (Haeusler, 1881),
Globuligerina balakhmatovae (Morozova, 1961), G. bathoniana (Pazdrowa, 1969), and G. oxfordiana (Grigelis, 1958). This assemblage is
probably the most diverse of those described to date from the epicontinental
areas of Europe. The recorded taxa are thought to represent three different
ecological morphotypes. The clear relationship between
transgressive–regressive facies and the palaeobiogeography of the recorded
planktic foraminifera indicates a morphotype-related depth–distribution
pattern in which small, simple, globular-chambered morphotypes occupied
shallow waters whereas slightly larger, more complex forms, or those with
hemispherical chambers, inhabited deeper and more open-water environments.
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