The comparison of foraminiferae thanatocenoses, formed in Maastrichtian atdifferent depth levels

The data on the species composition of the shells of plankton foraminifera (PF), from the Maastrichtian sediments, revealed by 30 boreholes and 4 sect ions in the region of the marginal shelf seas of Australia and New Zealand were analysed. Three levels of the solution were distinguished on the basis of the PF safety and the composition of their complexes. The three levels correspond to the following paleodepths: the first level corresponds to the paleodepth above 1500 m; the second from 1500 to 2300 m; the third lower 2 300 m. The first level is divided into three sublevels: the first - above 1 50 m, the secons - from 150-600 m, the third - from 600 to 1500 m.