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)

Genus EUCYCLOMPHALUS VON AMMON, 1892 Eucylomphalus cupido (D'ORBIGNY, 1825) (Plate III: fig. 7) 1852: Trochus cupido D'ORBIGNY, p. 261, pi. 309, fig. 5-8. 1861: Trochus cupido D''ORB. - STOLICZKA, p. 174, pi. 11, fig. 10-11. 71874: Trochus cupido D'ORB. — GEMMELLARO, G. G., p. 100, pl. XII, Fig. 11-12. 1911 : Trochus cupido D'ORB. — GEMMELLARO, M. p. 226, pl. X, fig. 29-30. 1915: Eucyclomphalu cupido D'ORB. - COSSMANN, p. 202, t. fig. 47, pl. XIII, fig. 20-22. 1966: Eucyclomphalus cupido D'ORB. - BOURROUILH, p. 41, fig. 15. Material : Four, fragmentary, shelly specimens are available. Shape : Dextral, conical shell with deep suture. The whorlsurface consists of two somewhat convex bands meeting at an angulation, which correspons to the periphery on the last whorl. The broadly phaneromphalous base is similarly convex, with a rounded angulation at the umbilical margin. Ornament : Between the angulation and the upper suture, near to the latter, a tubercled cord is the only spiral ornament and prosocline growth-lines give the collabral ornament. Below the angulation enhanced by a nodose carina and the whole of the base, a retiform sculpture of transversal and longitudinal cords is visible. Tubercles are sitting at the crossing points. Distribution: France, Fontaine-Etoupefour; Northern Alps: Hierlatz Limestone; Eastern Sicily: "Terebratula aspasia zona"; Marocco, jbel Bou-Mokhta and Daiet-el-Hamire

: Sinemurian; Bakony Mts., Tűzköveshegy: Raricostatum Zone. Remarks : The available specimens agree well with STOLICZKA'S figure lO.a. G.G. GEMMELLARO' S Trochus cupido differs from D'ORBIGNY' S and STOLICZKA'S descriptions in its shape and ornament in such degree, that it seems to be another species, not only a „varietas" (whorls without an angulation, bicarinate periphery, numerous spiral cords between the periphery and the upper suture etc.). BOURROUILH'S E. cupido (D'ORB.) has a narrower umbilicus and a somewhat différent sculpture, but such a variability is easily conceivable. Eucyclomphalus aff. campiliensis (DE STEFANI, 1887) (Plate III: figs. 8-9) aff. 1887: Pleurotomaria campiliensis DE STEFANI, p. 45, pl. I, fig. 12-13. Measurements: H HL HA D W A Plate III: figs. 8-9 14.5 18 -45° Material : Two damaged shelly and six internal mould specimens are available. Shape : High conical test with a rather deep suture. The juvenile whorls possess a somewhat less convex surface than the latter. Below the rounded periphery, there is a convex and broadly phaneromphalous base with a subangulate umbilical margin. The prosocline peristome seems to be unthickened, though one or two weak collabral constrictions are observable on the last whorl of the figured shelly and some inner mould specimens. Ornament : The whorls and the base as well as the inner parts of the umbilicus are covered by tubercled spiral cords. The strongest of them is running at the periphery. Some cords placed at the abaxial part of the base are following each other with narrower intrspaces, than the rest. Very fine, prosoclin growth-lines yield the transversal ornament. Distribution : Bakony Mts., Kericser : Ibex and Davoei Zone Remarks : The shape and the ornament correspond to the mentioned species excepting two characters and the generic arrangement. The doubtfulness of its relegation to Pleurotomaria, remarked by DE STEFANI, was established: it is an amberleyid species (Amberleya or Eucyclomphalus). It is not known, whether DE STEFANI'S specimens have an umbilicus and tubercles or not, thus the use of open nomenclature is necessary.