MILIOLIDAE - Acta Palaeontologica Polonica

114 EWA LUCZKOWSKA
Genus Flintina Cushman, 1921
Flintina truncata (Karrer, 1865)
(PI. XXIV, Figs 3,4)
1865. Triloculina truncata Karrer; F. Karrer, p. 704, PI. 1, Fig. 2a-c.
1904. Miliolina subrotunda Montagu, sp.; H. Sidebottom, p. 8, PI. 3, Figs 1-7.
Material. - 20 specimens (ColI. No. F-167).
Dimensions: L 0.65-0.8; B 0.75-0.8; T 0.5.
Description. - Test subrounded, broader at the top, periphery broadly
rounded; 2-3 chambers of the last whorl much inflated, very broad,
middle chamber partly visible in the upper part of one side only; sutures
distinct, flat, with a marked rim along the inner edges of chambers;
surface smooth, polished, with faint transverse wrinkles; wall thin; aperture
very large, circular or oval, surrounded with a thickened rim and
with a massive, short Y-shaped tooth, projecting somewhat above the
aperture border.
Variability. The test shape is very variable, as the evolving chambers
of the last whorl are irregular. There exist specimens, the last chamber
of which deviates slightly from the coiling axis (PI. XXIV, Fig. 3), and
others with the last chamber shorter and more inflated (PI. XXIV, Fig. 4).
Remarks. - This species described from the Leitha-limestones at Steinabrunn
(Austria), has not been found by the author in materials available
from Austria. It is morphologically similar to Sinuloculina cyclostoma
(Reuss), but differs in being more expanded at the top and in having
more than two chambers in the last whorl. From Flintina tutkowskii
Bogdanowich from the Middle Sarmatian of the West Ukraine it differs
in its broadly rounded, not narrowly rounded or acute, periphery. From
F. corporata Bogdanowich from the Konka beds of the West Caucasian
Foreland it differs in the more inflated chambers and the broader apertural
end of chambers; otherwise, the two species are very similar.
Distribution. - Poland: Upper Tortonian (Bogoria, Wf;glinek). Austria:
Tortonian, Steinabrunn, Vienna Basin.
Genus Pyrgo Defrance, 1824
X Pyrgo amphiconica (Reuss, 1850)
(PI. XXII, Figs 6a, b, 7, 8; Text-fig. 39/2)
1850. Biloculina amphiconica Reuss; A. E. Reuss, p. 382, PI. 49, Fig. 5.
1867. Biloculina amphiconica Reuss var. plastystoma Reuss; A. E. Reuss, p. 53, PI. 1,
Fig. 8.
1867. Biloculina larvata Reuss; ibidem, p. 70, PI. 2, Fig. 3.
Material. - Over 500 specimens (ColI. No. F-168, Sec. No. 406, 407).
Dimensions: L 0.4-1.5; B 0.4-1.5; T 0.25-1.0.
Description. - Test nearly circular, truncate at both ends; chambers
strongly inflated, with acute edges, periphery narrow, undulate, that of