MILIOLIDAE - Acta Palaeontologica Polonica

96 EWA l.UCZKOWSKA
Distribution. - Poland: Tortonian (Karsy, Korytnica, Wieliczka, W~glinek).
Romania: Tortonian, Lapugiu de Sus. USSR: Upper Tortonian,
the Volhyn-Podolian Platform.
Genus MiHola Lamarck, 1804
The genus Miliola differs from the genus Dentostommina Carman,
1933, in the type of the aperture, which is trematophore in MiHola,
whereas in Dentostommina it is circular with crenulate border and bifid
tooth. The type species Miliola saxorum Lamarck is of Eocene age,
whereas the type species Dentostommina bermudiana (Carman) comes
from the Recent of the Bermuda Is. It appears from an investigation of
the Miocene forms that the aperture with a crenulate border and a short
tooth occurs in the juvenile stage of Miliola specimens, or it may be seen
in mature specimens, the trematophore of which is damaged. It would
be advisable to revise the genus Dentostommina, which may be a junior
synonym of Miliola. The author of this paper did not found the specimens
corresponding to the genus Dentostommina in the Recent materials available.
X MiHola jabularoides (Karrer, 1865)
(Pl. XIV, Figs la, b; 2a, b; 3a, b; Text-fig. 34/1)
1865. Quinqueloculina fabularoides Karrer; F. Karrer, p. 704, PI. 1, Fig. 3.
1865. Quinqueloculina transilvaniae Karrer; ibidem, p. 704, PI. 1, Fig. 4.
1952. Schlumbergerina bogdanovi Serova; in: A. K. Bogdanowich, p. 171, PI. 26,
Fig. 3a-c.
Material. - 80 specimens (ColI. No. F-125, Sec. No. 418, 419).
Dimensions: L - 0.6-1.5; B - 0.4-0.85; T - 0.3-0.55.
Description. - Test irregularly oval, triangular with rounded edges
in section, periphery rounded; chambers tubular, narrow, irregular, middle
chambers large, slightly arcuate and strongly projecting above the surface;
sutures depressed; wall agglutinated, with a small number of fine sand
grains distributed irregularly in a surface layer of calcareous cement;
surface rough, matt; aperture circular, trematophore, convex, with numerous
small circular pores.
Variability and ontogeny. The shape and thickness of the test are very
variable, there being irregular bends in the chambers. The amount of
agglutinated material in the superficial layer of the test is also variable
and so some specimens have a nearly smooth, matt surface. The trematophore
if damaged leaves the aperture open, which is semicircular in shape,
surrounded with a crenulate border and has a simple tooth like Dentostommina
(PI. XIV, Fig. 1). The sections show a regular quinqueloculine