Selected results of microzoopaleontological investigation in perucian sediments of the Peruc member (Cenomanian) in sw. outskirts of Prague

Geoscience Research Reports 33, 2000 (GRR for 1999), pages 77–78

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Abstract

Sediments of the Peruc Member (Cenomanian) were mapped and described in sw. environments of Prague by Cháb et al. (CHÁB et al. 1978, 1988). Author of this report studied of this Member sediments on the localities Praha-Pražská čtvrť, Praha-Velká Ohrada and the environs of village Praha-Slivenec. Strongly oblate, finely aggutinated, irregularly polygonal tests of foraminiferals , with a rounded, protruding hem (with numerous diminutive outgrowthes) and with numerous, often irregular sides on the oblate were found, in gray claystones on the locality protuberances Praha-Barrandov (Fig. 1). On the locality Praha-Velká Ohrada were found, in a gray claystone, interesting microzoopaleontological fragments, with (probably) agglutinated walls. The largest is a fragment of front part of the test in the form of an irregularhexagon. The front side of the test has rounded edges, the apperture has a form of "irregular butterfly". The other fragments are represented by separate, or grown together, lamellac, which have triangular or trapezoid forms. The author of this report intends to describe the tests of the foraminifera (Fig. 1) as a new species of the genus Thurammina and the fragments (Figs. 2a,b) as the new taxon in a category "inserte sedis". Interesting microzoopaleonthologic fragments with (probably) agglutinated walls were Sound in a gray claystone on the locality Praha-Velká Ohrada.