Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 24-25. 2007. (Budapest, 2007)

72 SZABÓ, J. Measurements H HL HP D WP AA AL M 97.34. Plate I: 1-2 *38 *36 *34 41 125° 110° M 2007.8.1. Plate 1: 6-9 *31 *28 *22 29 22.6 105° M 97.31. Plate I: 3 *29 *26.5 *24 *26.8 — 120° 115° M 2007.5.1. Plate 1: 4-5 *28.5 25 22 23.4 119° 110° Description — Axially ovate, neritiform shell, consisting of 3—5 whorls, separated by incision-like suture. Protoconch unknown. Whorls convex, disregarding subsuturai belt of flat or concave shoulder. Axial edge of ramp bends upward to previous whorl, thus resulting in narrow concave subsutural belt of variable distinctness (Plate I). Outer (abaxial) edge of ramp usually not marked, but frequently indicated by some change in most "prominent" ornamental elements being wide, low, orthocline costae, sometimes wrinkles or just weak undulation. They may run from suture to suture, or to outer edge of ramp from lower suture. In previous case, costae consisted of few indistinct nodulae on ramp. Costae and corresponding ornamental elements cross growth-lines (—30°), being rather prosocline. Costae disappear at initial part of last whorl of largest (Padult/gerontic) specimens (Plate I: 1—2), only penultimate whorl bears costae. Smaller specimens with ribbed shell (subadult? forms) seem more frequent (Plate I: 3—9). Peristome and aperture of nearly half-circle shaped, slighdy ovate in suture to foot of columella clirection. Inner lip rather wide and extends as callosity, forming thick, rounded elevation in parietal region, and thin, feebly concave outer face at basal-columellar parts. Apertural edge of inner lip sharp, feebly concave line; basal-columellar part of inner Hp can be regarded as rudimentary aperture plate. Deeply behind inner Hp, weak, tooth-Hke process found on wall of penultimate wTiorl. Outer lip evenly arched, its outer edge sharp. Distinct, narrow canal visible in suture angle of peristome. Remarks — Unfortunately, the characteristically damaged original specimen, figured in KUTASSY 1927, Pl. Ill, figs 10 a-b, can not be found. Neritopsis pappi was estabHshed on four specimens; one of them (Pl. Ill, figs 10 c-d) belongs to H. stredae (KUTASSY 1933, p. 241), the other ones are not identifiable amongst the specimens, available from the two collections. In lack of a verified syntype, selection of a neotype for Hungariella pappi has become necessary. Many of the subsequently found specimens are better preserved than the figured one. The available specimens are surely topotypic and a part of them might be identified by KUTASSY (1933) when Hungariella was outiined as new genus. The selected neotype shows most of the shell morphological characters, the other figured specimens give an impression about the variability

7 of the sheU form and the ornament (Plate I: 1—9). Specimens with weak ornament may be hardly separable from smooth genera of Naticopsinae. Other known species of Hungariella bear marked ornament of different components. Distribution — Hungariella pappi has been found in both Budapest locaHties and (questionably) also in the South Karawanke Mountains (Slovenia, KUTASSY 1934); it occurred in Carnian and Norian strata of the Dachstein limestone. Hungariella stredae KUTASSY, 1933 (Plate I: 10-17) 1927: Neritopsis Pippin, sp. — KUTASSY, p. 153, Pl. III, Figs lOc-d (non:10a-b). 1933: llitngariella stredae nov. sp. — KUTASSY, p. 241, Pl. I, Figs 10-14. 1934: Hungariella stredae KUTASSY

—Kl'TASSY, p. 73, PL 11, Figs 8-10. Lectotype — M 2007.4.1., Plate I: 12-13. Type locality — Remete-hegy, Budapest. Type strata — Upper Triassic (Norian) Dachstein Limestone Formation. Material — Thirty

7 specimens (M 97.34. inventory J\

r

° refers also a H. pappi specimen, being inseparable). Measurements H HL HP D WP AA AL M 97.34. Plate I: 16-17 - - 34.2 102° 102

e 2007.4.1. Plate I: 12-13 31 28.7 22.5 27 20.5 98° 98° 2007.7.1. Plate I: 10-11 - 31.3 - 100° 100

e 2007.6.1. Plate I: 14-15 22.2 18.7 16.8 19 - 95° 95° Description — Rather high spired, low turbiniform shell with rapidly expanding 4—5 whorls. No protoconch found. Whorls arched, disregarding narrow, flatten subsutural ramp having rounded outer angulation. Second, weak angulation visible at peripher}

7

, followed by suture of subsecjuent whorl. Base convex, narrow (false?) umbiHcus appears along basal Hp. Peristome shape and its structure similar to that of Hungariella pappi. Differently from H. pappi, H. stredae has marked, characteristic ornament of considerable variability. Whole shell surface ornamented by spiral cords, and, in their interspaces, threads. AH cords and threads bear spiraUy elongated nodes and nodulae or, at least, thickenings (Plate I: 10—17). Actually nodes and nodulae correspond morphologically to short, spiraUy arranged ribs and riblets. Nodes strongest at and somewhat below outer edge of subsu-