Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 79. (Budapest 1987)

Conti, M. A. ; Szabó, J.: Comparison of Bajocian gastropod faunas from the Bakony Mts. (Hungary) and Umbria (Italy)

Proconulus ibbetsoni (MORRIS et LYCETT, 1851) 1851 : Trochus Ibbetsoni MORRIS et LYCETT, p. 61, Pl. X: figs 4-4a. 1868: Trochus Ibbetsoni MORR. et LYC. — LAUBE, p. 12, Pl. Ill: fig. 1. 1950: Proconulus ibbetsoni (MORR. et LYC.) — Cox & ARKELL, p. 58. 1983 : Proconulus ibbetsoni (MORR. et LYC.) — SZABÓ, p. 28, Pl. I: figs 11-12. Remarks — A specimen in bad state of preservation from Case Canepine became identifiable with the comparison of the two materials. That means a new datum about the distribution of this species. Distribution — England, Great Oolite; Poland (Balin), Upper Bathonian-Lower Callovian; Somhegy, Humphriesianum to Parkinsoni Zones; Case Canepine, Humphriesianum. Family Ataphridae COSSMANN, 1918 Genus ZIRCIA SZABÓ, 1981 Remarks — Two species belong to this genus, both of them have a characteristic ornament : an opisthocline lineation, crossing the prosocline growth-lines. The strength of the different line types are nearly the same. The appearance of this ornament is rather rare among the gastropods but it is unique in Ataphridae. It seems to be result of a Tethyan evolutionary line. Family Neritidae RAFINESQUE, 1815 Neritoma (Neridomus) riettii CONTI et MONARI, 1987 1982: Neritoma (Neridomus) sp. — SZABÓ, p. 20, Pl. II: figs 2-3. 1987: Neritoma (Neridomus) riettii CONTI et MONARI, p. 188, figs 10b, e, Pl. V: figs 4-5. Remarks — The preservation of the Bakony specimens did not make a specific identification or description possible but the comparison of the Italian and Hungarian faunas justified the presence of TV. (N.) riettii in the Somhegy locality. Distribution — Bakony, Humphriesianum Zone; "Bivio Macerino", ? condensed Murchisonae to Humphriesianum Zones. Family Crossostomatidae Cox, 1960 Paleocollonia angeli (PARONA, 1894) 1894: Crossostoma angeli PARONA, p. 39, Pl. I: fig. 38. 1982: Crossostoma sp. — SZABÓ, p. 21, Pl. II: figs 4-5. 1983: Paleocollonia angeli (PARONA) — CONTI & FISCHER, p. 504, fig. 9, Pl. II: figs 11-14. 1984: Palaecollonia angeli (PARONA) — CONTI & FISCHER, p. 142, Pl. Ill: fig. 6. 1987: Paleocollonia angeli (PARONA) — CONTI et MONARI, p. 189, Pl. IV: figs 7-8. Remarks — The umbilical part of the only Bakony specimen was covered by a piece of matrix so both the generic and specific identification became exact only after the comparison. In accordance with the general systematic remarks, we do not change the generic name befor clearing up the real taxomical significance of the presence of an umbilicus. Distribution — Aque Fredde, Subfurcatum Zone; Case Canepine, Humphriesianum Zone; "Bivio Macerino", ? condensed Murchisonae to Humphriesianum Zone; Somhegy condensed Subfurcatum to Garantiana Zone. Genus MARIOTTIA CONTI et FISCHER, 1981 Type species: Mariottia gibbosa CONTI et FISCHER, 1981 (see below). Original diagnosis — "Shellturbiniform, anomphalous, with convex smooth whorls. Last whorl expanded before the labrum in the shape of a carinate boss. Aperture circular with uninterrupted, thickened and expanded peristome; labrum little inclined in profil view, without reflected lip. Columellar callus extending from inner Up over the base, encrusting the umbilical area". Remarks — The synonym of the type species was ranged into Adeorbisina GRECO, 1899 Annls hist.-nat. Mus. natn. hung., 79, 1987