S.E. microscopy of Planispirillina flava (Sztejn), foram. Lower Cretaceous, Poland

Abstract

Otwornica Planispirillina flava (Sztejn) w mikroskopie elektronowym Supplemented description of Planispirllina flava (Sztejn, 1957) is presented on the basis of SEM examination. P. flava is known from epicontinental deposits of Upper Valanginian — Lower Hauterivian age of Poland.