Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 15. 1992. (Budapest, 1992)

Remarks: Böse (1894) did not give a lateral view of his specimen, thus his identification is regarded uncertain. One of Dubar's (1938) specimens (pi. 2, fig. 7) is very similar to the material of the Lókút Hill. Cicardi and Gaetani (1974) separated two subspecies (Rhynchonellina suessi suessi and Rhynchonellina suessi orobica). R. suessi orobica is more similar to the specimens of the Lókút Hill, but the lack of complete specimens does not allow a more accurate determination. Rhynchonella hofmanni BÖCKH, 1874 differs from our specimens by its costate (strongly on juveniles, weakly on adults) shell surface. The adult specimens of R. hofmanni are large, subpentagonal in outline and there is a long, conspicuous muscle scar on the surface of pedicle valve. Distribution: According to Aimeras (1964), R. suessi is Hettangian to Early Sinemurian in age. The species was reported from the Lombardián Basin, the Rif Mountains and the Text-fig. 2 - Drawing of Bak Mountains. Rhynchonellina suessi Family WELLERELLIDAE LlKHAREV, 1956 Subfamily CIRPINAE AGER, 1965 Genus Cirpa DE GREGORIO, 1930 Cirpa ? latifrons (STUR in GEYER, 1889) (Pl. I, Fig. 2; Text-fig. 3) 1889 Rhynchonella latifrons n.sp. - Stur in Geyer: p. 54, pi. 6, figs. 25-31. 1893 Rhynchonella cfr. latifrons STUR - Parona: p. 32, pl. 1, fig.21. 1898 Rhynchonella sublatifrons n.sp. - Böse: p. 194, pi. 14, figs. 10-12. ?1943 Rhynchonella latifrons STUR - Vígh: pl. 2, fig. 24. 1953 Rhynchonella latifrons STUR - Rossi Ronchetti and Brena: p. 125, pi. 11, fig.6. 1954 Rhynchonella cfr. latifrons STUR - Conti: p. 201, pi. 10, fig. 1. 1964 Rhynchonella latifrons STUR - Sacchi Vialli: p. 12, pi. 2, fig. 4. 1961 Rhynchonella latifrons STUR - Sacchi Vialli and Cantaluppi: p. 76, pi. 11, figs.7-8. Material: 4 complete and 1 incomplete specimens. Dimensions (mm): Specimen M.91.05. (Text-fig. 3) length: 11.1, width: 13.4, thickness: 6.6. Description - External characters: Medium-sized shell, subtriangular in outline. The sides and the base are straight. The angle between the lateral margins is about 95°. The antero-lateral corners are rounded. The width is greater than the length while the thickness is about half of the width. Biconvex form, the pedicle valve is more convex than the brachial one. The maximum width is at the anterior third, the maximum convexity is at the middle of shell. The beak is small and suberect. The lateral commissures are straight, the anterior one is straight or slightly