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Библиогр.: 9 назв.

Family Polymorphinidae Orbigny, 1846 is one of the impotant group of the order Polymorphinida Wedekind, 1937, of
subclass Lagenata Maslakova, 1990 class Foraminifera Orbigny, 1826. The shell Polymorphinidae is secreted calcareous and
differ their intrinsity constraction. Morphological criteria have leid in the base to creation of different genera. In this paper auther
have stadied the species of the several genera. The morphological criterion is a cardinal one taking into account the composition
and microstructure of the test wall. The studies of the morphological peculiarities of the Polymorphinidae tests are based on
different features elaborated mainly by the auther. In subfamily Polymorphininae Orbigny, 1846 the first time two subspecies of
species Globulina amygdaloides Reuss, 1851 have been described: G. amygdaloides variabilis Kseneva subsp. nov. and G.
amygdaloides sibirica Kseneva subsp. nov. In the other species Globulina gibba (Orbigny) has been described one new
subspecies: G. gibba tumidiuscula Kseneva subsp. nov. In the genera Siphoglobulina Parr, 1950 ovoiformis Kusina acutata
Kseneva subsp. nov. has been described. In the second subfamily auther was stadied one new species – Ramulina globosa
Kseneva sp. nov. These Polymorphinidae are found from the Campanian – Maastrichtian deposits of Gankinskaya suite the same
name of Horizon in Western Siberia. This suite consist of terrigenius alevrolites with including of carboniferous material differ
from the other tarrigenius facies in Mesozoic seсtion. Such taxons of foraminifera from section of West Siberian province have
similar genera in East European province of Boreal-Atlantic Realm. The descriptions of the Polymorphidae taxa perfomed by the
author relied on five criteria such as morphological, geochronological, philogenetic, palaegeographical, palaebiogeographical. The
species and subspecies were analazed by means of the electronic microscopy in the Biology and Biophysics Research Institute of
TSU. The factors of the habitat and geographical isolation play a great role in the Polymorphidae systematics. This naturally suggests that the palaegeographical criterion must be taken into consideration. While studying the new species and subspecies of
the established family, the discrepancy with Kuzina's data was revealed not only in age determination but also in the
palaegeographical occurrence and location of Polymorphinidae. The subspecies Siphoglobulina ovoiformis (Kuzina) subspecies
acutata (Kseneva) differ from a standard species (Kuzina, 1979) morphologically. Kseneva´s subspecies is represented by an
acerated initial loculum, bending oval bulding shapes of the subsequent loculum and other features. In paper two paleontological
tables with describing taxons. The typical taxons are kept in micropaleontological laboratory of Tomsk State University.