MILIOLIDAE - Acta Palaeontologica Polonica

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152 EWA LUCZKOWSKA 1946. Hauerina speciosa (Karrer); J. A. Cushman, p. 5, PI. 1, Fig. 14a, b. 1952. Spiroloculina (?) crenata Karrer; A. K. Bogdanowich, p. 154, PI. 22, Fig. 4a-c. 1955. Spiroloculina crenata Karrer; M. J. Serova, p. 326, PI. 12, Figs 1-4. Material. - 10 specimens (ColI. No. F-202, Sec. No. 413, 430, 431). Dimensions: L 0.35-0.45; B 0.25-0.37; T 0.1-0.15 Description. - Test broadly oval, flat, periphery truncate; two outer chambers narrow, arcuate, of uniform width, arranged in a single plane, middle chambers in sigmoiline arrangement, 1-3 on each side of juvenile stage; sutures depressed; surface covered with 5-8 large, prominent protuberances on each chamber, separated by broad furrows and making a regular corrugate pattern on the periphery; wall smooth, polished; aperture elongate, narrow somewhat broader at the base and at the top, with lateral edges enlarged and somewhat bent inwards, and filled with a long, simple tooth. Variability and ontogeny. The shape of the aperture is variable. It is usually as an elongated slit, filled entirely with a simple tooth, but in some specimens the lateral extensions are somewhat sinuous and inclined inside the aperture. The number of protuberances on each chamber is also variable but not greater than 8 on each chamber. The internal structure is sigmoiline. The sections show chambers gradually increasing in size, arranged in two spiral lines then in a sinusoid line to attain a planispiral arrangement finally (Text-fig. 53/5). Remarks. - Our specimens are identical with those from Lapugiu and Buitur in Romania, having the same elongated narrow aperture. Only two specimens from Buitur have sinuous and inclined lateral edges of the aperture. This character of the aperture is connected with the ornamentation of the test, but probably caused Cushman (1946) to include this species in the genus Hauerina. However, none of the specimens investigated, either from Korytnica or from Buitur in Romania, has a cribrate aperture; besides, they both have a sigmoiline, not quinqueloculine, internal structure, as in Hauerina. Collins (1958) is of the opinion that the Recent species named Spiroloculina crenata Karrer by Brady (1884) is similar to but not identical with this species; nevertheless, neither does it belong to the genus Hauerina, having a sigmoiline initial stage. Collins considers it to be a new species belonging to the genus Spirosigmoilina and gives it the name of Spirosigmoilina bradyi. This species is very similar to the related species Spirosigmoilina speciosa (Karrer), but differs in having fewer and larger protuberances in the chambers, a thicker test and truncate periphery. Distribution. - Poland: Tortonian (Gliwice Stare, Karsy, Korytnica). Romania: Tortonian, Kostej in Banat, Lapugiu, Buitur. USSR: Miocene, West Ukraine.
<strong>MILIOLIDAE</strong> FROM MIOCENE OF POLAND 153 + Spirosigmoilina speciosa (Karrer, 1868) (PI. XVII, Figs 17a, b, 18a, b; Text-fig. 53/4) 1868. Spiroloculina speciosa Karrer; F. Karrer, p. 135, PI. 1, Fig. 8. 1946. Hauerina speciosa (Karrer); J. A. Cushman, p. 5, PI. 1, Fig. 13a, b. 1960. Hauerina speciosa (Karrer); R. W. Barker, PI. 11, Figs 10, 11. Material. - 30 specimens (ColI. No. F-203, Sec. No. 412, 428, 429). Dimensions: L 0.55; B 0.4-0.52; T 0.08-0.12. Description. - Test broadly oval, very thin and flat, periphery rounded; chambers of planispiral stage narrow, arcuate, 3-4 on each side of the sigmoiline stage, which is seen in the central part of the test as small proturberances; sutures depressed; surface covered with 10-14 regular transverse bumps on each chamber, making a corrugate pattern on the periphery; wall smooth, polished; aperture elongate, narrow, slitlike, with edges inclined to the inside and filled with a long, simple tooth. Remarks. - Cushman regarded this species as belonging to the genus Hauerina, as he did Spirosigmoilina crenata (Karrer), despite its sigmoiline internal structure (Text-fig. 53/4). It differs from S. crenata in the greater number of bumps on the chambers, more flattened test and rounded, not truncate periphery. Distribution. - Poland: Tortonian (Karsy, Korytnica). Czechoslovakia: Tortonian, 2idlochovice. Romania: Tortonian, Kostej in Banat. Institute of Regional Geology and Coal Deposits Department of Palaeontology and Stratigraphy Academy of Mining and Metallurgy Krakow, Al. Mickiewicza 30 February, 1973 REFERENCES ADAMS, T. D. & HAYNES, J. 1965. Holocene Foraminifera from Wales. - Paleontology, 8, I, 27-38, London;, ALEXANDROWICZ, S. W. 1969. Pozycja geologiczna warstw k~dzierzynskich w zachodnim obrzezeniu Zagl~bia G6rnosl~skiego.- Spraw. pos. Kom. Oddz. PAN w Krakowie, 13/2, 569-573, Krak6w. AR~,' B. 1962. Miocen Roztocza Lubelskiego p6mi~dzy Sann~ i Tanwiq. - Prace Inst. Geol., 30, 3, 5--56, Warszawa. ATKINSON, K. 1971. The relationship of Recent foraminifera to the sedimentary facies in the turbulent zone, Cardigan Bay. ~ Journ. Nat. Hist., 5, 38~39. BALUK, W. 1970. Dolny torton Niskowej kolo Nowego Sqcza. - <strong>Acta</strong> Geol. Pol., 20, 1, 101-157, Warszawa. BANDY, O. L. 1961. Distribution of foraminifera, radiolaria and diatoms in sediments of the Gulf of California. - Micropaleontology, 7, 1, 1-26, New York. - 1964a. Foraminiferal 'biofacies in sediments of Gulf of Batabano, Cuba, and
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