MILIOLIDAE - Acta Palaeontologica Polonica

90 EWA LUCZKOWSKA
subacute in the earlier stages (Text-fig. 32/1). Thus it might be assumed
that variation in the outline of the periphery is connected with the ontogenetical
variation of the species. The juvenile stage of all specimens has
tubular chambers; the differentiation of the peripheral outline appears
only in the penultimate or last whorl.
Remarks. - In comparison with the specimens from Lapugiu de Sus
in Romania, which is locality of the same age as Kostej, the specimens
investigated have a more regular test shape; the other features are
identical.
Distribution. - Poland: Lower Tortonian (Benczyn, Korytnica). Czechoslovakia:
Lower Tortonian, Zidlochovice. Romania: Tortonian, Kostej in
Banat and Lapugiu de Sus.
Genus Hauerina d'Orbigny, 1839
* Hauerina aspergilla (Karrer, 1868)
(pI. XVIII, Fig. 5a, b)
1868. Peneroplis aspergilla Karrer; F. Karrer, p. 154, PI. 3, Fig. 9.
1960. Hauerina sp. Bogdanowich; A. K. Bogdanowich, p. 249, PI. 3, Fig. 6a, b.
Material. - 25 specimens (Call. No. F-141).
Dimensions: L "'-' 0.60; B "'-' 0.52; T "'-' 0.22.
Description. - Test nearly circular, biconvex, depressed in the central
part, periphery subacute; chambers irregularly inflated, 4-5 in the last
whorl, overhanging at sutures and leaving only a small portion of the
chambers of the previous whorl uncovered in the center of either side;
sutures slightly depressed, occasionally sinuous and strongly bent backwards;
surface smooth, polished; aperture large, irregularly triangular,
with an inflated trematophore and numerous small pores.
Variability. - The test shape, the number and arrangement of
chambers in the last whorl, and the flattening of the chambers are so
variable that specimens uniform in shape are hardly ever met.
Remarks. - This species resembles Hauerina tumida Serova, 1955,
from the Lower Sarmatian of the Forecarpathians in its shape variability
but differs in having a larger, more flattened test and a nearly acute, not
rounded, periphery. It differs from H. irschavensis Venglinsky & Burindina,
1965, from the middle Sarmatian of the Transcarpathians, in the less
inflated chambers, subacute periphery and more elongated trematophore.
The test shape is identical with that of Hauerina sp. Bogdanowich, 1960
from the Meotis of Kuban. The specimens from Lapugiu de Sus in Banat
in Romania the locality of the same age as Kostej do not differ from ours.
Distribution. - Poland: Upper Tortonian (Gliwice Stare, Iwkowa, Niskowa,
W~glinek). Romania: Tortonian, Kostej in Banat. USSR: Meotis
(Pliocene), West Precaucasus.