Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 62. (Budapest 1970)

M. Nyírő, R.: Study of the smaller Foraminifera of the Weimpuszta Middle Eocene key section at Nagyesztergár (Bakony Mountains, Transdanubia, Hungary)

Gen. Cibicides MONTFORT, 1808 Cibicides carinatus (TERQUEM) Plate II, Fig. 4-5. 1882 Truncatulina carinata TERQUEM, TERQUEM: Mém. Soc. Géol. France, ser. 3, vol. 2, p. 94, pi. 10, fig. 1-2. 1961 Cibicides carinatus (TERQUEM), KAASSCHIETER: Inst. Roy. d. Sei. Nat. de Belg. Mem., Mem. No. 147, p. 221-222. pl. XIV., fig. 6. This species occurs thoroughout the Assilina spira horizon, being fairly abundant in some samples. Very small specimens, with the edge characteristic of the carinata. Test-wall thin and finely perforate. In Hungary, known from the Lower and Middle Eocene of the Dorog Basin. The entire Eocene of Belgium, an the Lutetian of France. Cibicides westi HOWE Plate II, Fig. 6-7. 1939 Cibicides westi HOWE, HOWE: Louisiana Dept. Cons., Geol. Bull. no. 14, p. 88, pi. 13, fig. 20-22. 1961 Cibicides westi HOWE, KAASSCHIETER: Inst. Roy. d. Sei. Nat. de Belg. Mem., Mem. No. 147, p. 218, pl. XIII, fig. 6-7. Numerous in the Assilina spira horizon, while only two specimens have been found in the N. perforatus horizon. Test comparatively small, with rather thin and strongly perforate wall. Septa and margin slightly thickened. In Hungary it is known from the beds considered as Lower Eocene of the Dorog Basin. Several specimens have been registered from the Lower and Middle Eocene of Belgium and the Netherlands. Gen. Cyeloloculina HERON-ALLEN & EARLAND, 1908 Cycloloeulina sp. Plate II, Fig. 8. It appears in sample 71 of the Assilina spira horizon and is present, in varying number, in almost everv bed of the horizon, being particularlv numerous in samples 73 and 76. Test completely flattened, wall thin, hyaline, transparent, finely and radially perforate. First chamber globular, surrounded irregularly by the first four lunular chambers. From the sixth chamber onwards the chambers englobe, in an evolute manner, the embryonal apparatus and the elder chambers. The periphery is crumbled on each specimen, and no aperture can be discerned. Thin foldings on the septa give the impression of secondary septa. Test relatively small (diameter 0,3-0,6 mm.) These specimens merit further, more detailed study which may lead to remarkable stratigraphie and phylogenetic conclusions.