Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 74. (Budapest 1982)

Szabó, J.: Lower and Middle Jurassic Gastropods from the Bakony Mountains (Hungary). Part IV.: Neritacea, Craspedostomatacea, Amberleyacea (Archaeogastropoda)

1912: Eucyclus alpinus STOL. - DARESTE DE LA CHAVANNE, p. 53, pl. IV, fig. 4. 1937: Amberleya alpina STOL. - PCHELINCEV, p. 29, pl. II, fig. 14. 1966: Eucyclus alpinus STOL. — BOURROUILH, p. 36, pl. I, fig. 1. 1967: Pleurotomaria (?) obesa (TQ. et PT.) - SACCHI-VIALLI & CANTALUPPIP 118. pl. XVIII. fig. 2. Measurements: H HL HA D W A Plate II: fig. 13 32 21.5 32 19 44° Material : Twenty-two specimens, preserved as fragmentary inner moulds, some of them with shell portions. Shape : The high littoriniform shell is dextral, with a rounded-angulate periphery, a deep suture and a convex base without umbilicus. The peristome is subquadral, its columellar lip vertical and strong, but the outer lip rather weak and thin as the remaining parts of the shell. Ornament : Longitudinally, the whorls are ornamented by tubercled carinae, the strongest of which runs along the periphery. Two carinae are situated between the suture and the periphery on the earliest whorls, but its number increases to four on the adult. Below the periphery, there are also one or two carinae, and numerous cords on the base. These latter are arranged with narrower interspaces, than the carinae are and have no tubercles. The collabral ornament consists of somewhat prosocline and fine growth-lines. Distribution : Northern Alps: Hierlatz Limestone; Sicily: "Pygope aspasia" Zone; Atlas Mountains, Guelma (Algeria) Middle Liassic; El Hameiret (Marocco): Sinemurian; n-Talsast (Marocco): Lower Carixian; Caucasus: Pliensabachian

; Bakony Mts., Kericser: beds with mixed Obtusum to Ibex Zone fauna — Davoei Zone; Káváshegy. Davoei Zone; Lókút? Davoei Zone; Büdöskút: Stokesi — Margaritatus Zone; Fenyveskút: Domerian. S. Alps: Domerian. Remarks : The available specimens agree with STOLICZKA'S figure and description well. Other authors have documented somewhat different forms, with slightly coeloconoid outline, smaller spiral angle or slight changes in the sculptural characters. These differences simply mark a moderate variability of the species. Amberleya (Eucyclus) capitanea (MÜNSTER, 1844) (Plate III: figs. 1-2) 1844: Turbo capitaneus MÜNST. - in GOLDFUSS, p. 97, pl. CXCIV, fig. 1. 1852: Turbo capitaneus MÜNST. - D'ORBIGNY, p. 341, pi. 329, fig. 7-8. 1892: Amberleya capitanea MÜNST. — HUDLESTON, p. 277, pl. XXI, fig. 12. 1909: Eucyclus capitaneus MÜNST. — BRÖSAMLEN, p. 257, pl. XX, fig. 8-9 1937: Amberleya capitanea MÜNST. — PCHELINCEV, p. 30, pl. II, fig. 20. Measurements: H HL HA D W A Plate III: fig. 1 25 16.5 25.5 15 43° Material : Three, more or less fragmentary inner mould specimens with some pieces of shell. Shape : Dextral, high littoriniform, thick shell with a convex surface of the whorls. The periphery is subangulate and carinate. The somewhat flattened base is without umbilicus; the columella and the columellar lip is strong, likewise the other parts of the peristome are thickened inside on the adult. An inner mould shows antoher, deserted thickened peristome besides the last one. Ornament : On the last whorl three strong, nodose carinae are present, the lowermost of which is covered by the suture on the former whorls. The base is ornamented by spiral cords with tiny tubercles on the outer one or two. Fine threads yield a transversal ornament parallel to the prosocline growth-lines. Distribution : Germany: Upper Toarcian - Lower Aalenian; France: Toarcian; England: Upper Liassic; Bakony Mts., Gombáspuszta: Upper Toarcian. Caucasus: ?Toarcian. Remarks: In having a smaller spiral angle, a thickened peristome and much higher number of the basal cords, specimens from the Bakony Mts. are different from all A. (E) capitaneus figured by the above mentioned authors. From these, BRÖSAMLEN'S and D'ORBIGNY'S figures display the most comparable shapes. However, these differences seem to fall into the variability of the species.