Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 26. 2008. (Budapest, 2008)
lower suture, which becomes periphery on last whorl; wide, steep, feebly convex ramp between upper suture and angulation; base rather low, convex and anomphalous; beside peripheral carina weaker, sparse cords ornament both ramp and base with traces of granules on them. M a t e r i a 1 — A single specimen from STOLICZKA (1861) collection (NhM), identified as Trochus cupido. Measurements H HL HP D W AA AL holotype - *16.5 *11.8 *17.2 *<20° *31° Shape — Turriculate-pagodiform shell of coeloconoidal outline consisting of relatively high number of whorls, nodose-carinate spiral angulation running on whorls near lower suture. Angulation becomes periphery on last whorl. Suture running in deep, wide canal little below angulation. Wide, steep, feebly convex ramp extending between upper suture and angulation. Base rather low, convex and anomphalous; no peristome part neither apical whorls found preserved. Sculpture — Below peripheral carina slightly weaker spiral carina visible that is just covered by the suture on former whorls. Further, weaker, sparse cords ornament both ramp and base with traces of granules on them. Growth-lines moderately prosocline. Remarks — Eugclus (Eugclus) mitterseensis n. sp. has smaller and more slender shell than Eugclus (Eugclus) alpinus, and the number, the strength and the arrangement of the spiral ornamental elements are also different. The shell outline is also unlike because it is slightly coeloconoidal. In this latter character, the specimen resembles the Toarcian Eugclus (Eugclus) barnahasi SZABÓ, 1995 but the shape of the whorls and the ornament distinguish it. Distribution — Schafberg at St. Wolfgang, Austria), the preservation of the only available specimen suggests its occurrence in the typical Hierlatz Limestone (Sinemurian). Figure 73 — Eucyclus (Eucyclus) mitterseensis n. sp., holotype. — A: holotype in dorsal view, xl; B-C: holotype in "apertural" and dorsal views, x2. Eucyclus (Eucyclus) margaritaceus (STOLICZKA, 1861) (Figure 74: A-D) pars 1861: Chemnit%ia margaritacea STOL. — STOLICZKA, p. 167, pl. 1, fig. 10 a. Lectotype — GBa 2008/69/9/1/1 (selected here). Material — Single, fragmentary specimen from the Chemnit^ia margaritacea STOLICZKA, 1861 box of the "originals collection" in the GBa Museum. No more specimen were found in the "background" material. Measurements H HL HP lectotype *12 *7 Shape — Fragments indicative of turriculate shell, consisting of rather high, strongly convex whorls, separated by impressed suture. Periphery rounded, suture running far below it. Base convex, anomphalous but narrow false umbilicus visible behind slightly reflecting columellar lip. Parietal region suggests discontinuous peristome. No other part of peristome preserved, but from cross-section of last whorl, outer lip inferable subcircular between foot of columella and suture. Sculpture — Spiral cords and threads, and subregularly repeating fine collabral threads ornament whorls. Four cords present on last periphery 7 , lowermost one just covered by suture on former whorls. On "ramp", five granulate threads visible; uppermost two cords of peripheral region also granulate. Tubercles of neighbouring spiral threads and cords connected by weak collabral riblets. D W AA AL 11 *6.7 25° Base covered by dense spiral threads crossed only by fine growth-lines. Remarks — There are three fragmentary 7 syntypes in STOLICZKA's (1861) "originals collection" under the name " Chemnit^ia margaritacea" that belong to three different species. From these specimens, that one is selected as the name bearing type, A\ 7 hich is the most probable model to the drawing in STOLICZKA (1861) Tafel I, Figure 10 a. This kind of ornament is rather common in Eucyclidae, its pattern is frequent in Eugclus, but the reconstruable shell is unusually turriculate. That is why some notices are giv r en about some other instances in the remarks to E^ugclus (see above). Distribution — H all statt, Hierlatz Alpe, Late Sinemurian (Oxynotum Zone).
