Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 26. 2008. (Budapest, 2008)

whorl are rather variable comparing the specimens (see e.g. figured specimens). Neritopsis taramellii G. G. GEMMELLARO, 1879 and Neritopsis praeclara M. GEMMELLARC ), 1911 are rather similar species. However, the figures show different views, and due to this fact, the distinction needs comparison of specimens. FISCHER et al. (2002) misidentified a spiny species with different peristome as N. (N.) elegantissima from the Monte Cucco Sinemurian; the species, having a well distinguishable ramp, seems related to N. (N.) compressula von GÜMBEL, 1861. Distribution — Hierlatz Alpe, Upper Sinemurian (Oxynotum Zone), Sümeg (Bakony), Upper(?) Sinemurian. Figure 82 —Neritopsis (Neritopsis) elegantissima HÖRNES, 1853; lectotype and a paralectotype. — 7 a-b: copy of the original figures from STOLICZKA (1861) Tafel III; A-D: lectotype, dorsal (A, C) and apical (B, D) views, A-B = xl, C-D = x2.5; E-J: a paralectotype (GBa 2008/69/31/1) in apertural (G, H), dorsal (E, I) and apical (E, J) views, E-G = Xl, H-J = X2.5. Neritopsis (Neritopsis) fabianii TONI, 1912 (Figure 83: E-H) 1912: Neritopsis fab/ami Tow

—T< >xi, p. 40, pi. 2, figs. 3a-d. 1980: Neritopsis (Neritopsis) fabianii Tow, 1912 — SZABÓ, p. 18, pl. 1, figs. 4-5 Material — More than forty specimens, that are inner moulds in majority

7 (HGM). M easure ments H HL HP Figure 83 Shape — Low-spired, subglobose shell. Protoconch shape not different from that of adult. Subsutural belt of whorls bent upwards. Last whorl covering former parts of shell almost completely. Peristome nearly circular but angular at suture. Narrow callus developed along parietal lip. Sculpture — Following smooth protoconch, whole surface of teleoconch ornamented by spiral lines of two strength, weaker secondary lines appearing in intersections of first order ones on post-juvenile shell. Growth-lines prosocline and arranged into bundles, appearing subregularly on some specimens. On some other specimens, these bundles protruded as low ridges subsuturally. Bundles and ridges lacking from some specimens. D W AA AL 13.5 8.5 130° 130° Remarks — In spite of the relatively high number of the specimens, the identification of this species was difficult, owing to the low number of specimens having no marked collabral ornament, like it is in TONl's depiction. The measurements do not var)

7 as does the sculpture. Neritopsis fabianii specimens with collabral ridges are comparable to N. elegantissima and related species, but the latters have rarer, longer and stronger varices than the former. Distinction from A. (N.)papodensis see below. Distribution — Belluno (Southern Alps), Pliensbachian; Bakony Mts (many localities), from beds with mixed Obtusum to Ibex Zone faunas, and from jamesoni to Davoei Zone (Lower Pliensbachian).