MILIOLIDAE - Acta Palaeontologica Polonica

92 EWA LUCZKOWSKA
chambers semicircular, slightly inflated, narrowing somewhat near the
aperture, two middle chambers small, flat, poorly visible in the center
of the test; two or three chambers visible in the last whorl; sutures flat,
indistinct, with light strips along the edges of the previous chambers;
surface smooth, polished; aperture narrowly oval, trematophore, with
about 10 fairly large pores.
Variability. The shape of the test is variable owing to the more or
less involute placement of the last chamber.
Remarks. - This species differs from Hauerina fragilissima (Brady),
Recent, in the smaller dimensions of the test, its more oval shape and the
more inflated and broader chambers.
Distribution. - Poland: Upper Tortonian (Gliwice Stare, Ligota Zabrska).
USSR: Upper Tortonian, the Volhyn-Podolian Platform.
Hauerina podolica Serova, 1955
(PI. XVIII, Figs 3a-c, 4a-c)
1955. Hauerina podolica Serova; M. J. Serova, p. 327, PI. 12, Figs 7-14.
Material. - 25 specimens (ColI. No. F-145).
Dimensions: L ~ 0.50; B ~ 0.40; T ~ 0.25.
Description. - Test circular oval, lenticular in cross-section, periphery
subacute; two outer chambers very broad, with nearly flat sides and
somewhat enlarging near the aperture; 1-2 middle chambers very small,
flat, poorly visible; sutures indistinct; surface smooth, dull; aperture
triangular, large, trematophore, with 6-10 pores.
Variability. The test shape is variable as there is a tendency to the
slightly evolute arrangement of the last chamber.
Remarks. - Morphologically this species stands close to Podolia compacta
(Serova, 1953), but differs in having broader chambers, a lower
test and a trematophore, not lyre-shaped, aperture. From Hauerina subbotinae
Bogdanowich & Budanova, 1952, it differs in its more flattened
sides, subacute periphery, and aperture with a small number of pores.
Distribution. - Poland: Upper Tortonian (Gliwice Stare, Ligota Zabrska,
Niskowa, W~glinek). USSR: Upper Tortonian, the Volhyn-Podolian
Platform.
Hauerina tumida Serova, 1952
(PI. XVIII, Fig. Ga, b)
1952. Hauerina tumida Serova; in A. K. Bogdanowich, p. 178, PI. 27, Fig. 7a-c.
1955. Hauerina tumida Serova; M. J. Serova, p. 331, PI. 14, Figs 7, 8.
Material. - 15 specimens (ColI. No. F-146)
Dimensions. L ~ 0.4; B ~ 0.4; T ~ 0.3.