MILIOLIDAE - Acta Palaeontologica Polonica

136 EWA l.UCZKOWSKA
(Punta Grossa near Triest), our forms have more inflated chambers. They
however differ from Triloculina austriaca d'Orbigny in their more
elongated shape, less inflated periphery, triangular outline in cross-section,
and less depressed sutures. From T. angularis they differ in the more
rounded edges and more inflated periphery.
Distribution. - Poland: Tortonian (Benczyn, Bogoria, Bogucice, Gieraszowice,
Grabowiec, Karsy, Korytnica, Krywald, Rybnica, W~glinek).
Austria: Tortonian, Nussdorf, Voslau, Vienna Basin. Czechoslovakia: Lower
Tortonian, Zidlochovice. Italia: Pliocene, Castell'Arquato. USSR: Lower
and Upper Tortonian, the Volhyn-Podolian Platform, the Precarpathian
Foredeep; Konka (Upper Tortonian), Black Sea Depression, Transcaucasus
and Caucasus. Recent: Adriatic Sea.
Triloculina gubkini (Bogdanowich, 1952)
(PI. XXIII, Fig. 5a-c; Text-fig. 4611)
1952. Miliolina gubkini Bogdanowich; A. K. Bogdanowich, p. 101, PI. 7, Fig. 4.
Material. - 9 specimens (ColI. No. F-187, Sec. No. 205).
Dimensions: L 0.8-1.4; B 0.5-0.9; T 0.4-0.7.
Description. - Test elongate, oval-quadrangular, periphery broadly
rounded and slightly compressed, triangular with rounded apices in crosssection;
chambers broad, with flattened periphery, somewhat broader at
the base and narrowing towards the aperture, third chamber elongated,
slightly convex, narrow; sutures depressed; surface smooth, polished; wall
thin; aperture circular, somewhat narrower at the base and with a short
and bifid tooth.
Variability and ontogeny. The test shape is stable. The chambers of
juvenile stage have a more rounded periphery, which becomes flattened
as they grow. The internal structure initially cryptoquinqueloculine, then
pseudotriloculine (Text-fig. 46/1): PD about 60 f.1.
Remarks. - This species differs from Sinuloculina inflata (d'Orbigny)
in the more inflated chambers, depressed at the periphery, and the
triangular-circular, not oval, outline in cross-section.
Distribution. - Poland: Upper Tortonian (Bogoria, Gieraszowice, Gory
Wysokie, Miechocin, W~glinek). USSR: Tarkhan (Middle Miocene), North
Caucasus.
+ Triloculina intermedia Karrer, 1868
(PI. XXIII, Fig. la-c; Text-fig. 46/4)
1868. Triloculina intermedia Karrer; F. Karrer, p. 138, PI. 1, Fig. II.
1878. Triloculina plicata Terquem; O. Terquem, p. 61, PI. 6, Fig. 2.
1893a. Triloculina marioni Schlumberger; C. Schlumberger, p. 62, PI. 1, Figs 38-41,
p. 63, Figs 7, 8.
1970. Triloculina intermedia Karrer; V. J. Didkovsky & Z. N. Satanovskaja, p. 58,
PI. 35, Fig. 3.