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

Revision of Hungariella KUTASSY, 1933 Systematics Abbreviations to measurements — H = total height; HL = height of last whorl; HP = height of peristome; D = diameter of last whorl; WP = width of peristome; AA = apical angle; AL = coiling angle of last whorl (if different from apical angle). Asterisks indicate reconstructed measurements taken on more (**) or less (*) damaged shell parts. Class Gastropoda CUVIER, 1797 Subclass Neritaemorphi KOKEN, 1896 Order Neritopsina Cox & KNIGHT, 1960 Family Neritopsidae GRAY, 1847 Genus Hungariella KUTASSY, 1933 non: 1946: Hungariella ERDŐS Type species —Neritopsis Pappi KUTASSY, 1927 = Hungariellapappi (KUTASSY, 1927). (Re-)Description — Low turbiniform—subglobose shell, consisting of few (4—5), rapidly expanding whorls, separated by impressed, distinct suture. Spire rather protruding and gradate in outline. Whorl cross-section slightly ovate; axialfy elongated. Subsutural belt forms narrow, feebly concave to feebly convex shoulder with rounded abaxial edge. Aperture half circle-shaped with almost straight inner lip line, and angulation at suture. Peristome continuous, outer lip sharp, inner lip appears as moderately wide parietal callosity, extending wider over central part of base then turning into short columellar lip, having broad outer face with shallow, axial concavity

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. Callosity

7 has rounded thickening at parietal region but thinner and feebly concave below; apertural edge sharply angular and feebly arched with abaxial concavity. Actually, columellar part of angulation forms narrow, rudimentary plate. Single dent-like process develops deeply behind peristome on wall of penultimate whorl. At suturai angle, narrow canal found. KUTASSY (1933) notes one or two smaller denticles that may appear also at foot of columella. Operculum unknown. Ornament consists of low and wide transversal (but not collabral) costae or undulations, low spiral folds, spiral cords and threads; some of spiral ones corrugated by nodes of different size that may change also into spines. Nodes and spines may be arranged into opisthocline rows, resulting in wide, low, undulating costae. Nodes, spines and costae strongest at abaxial edge of shoulder, weaken towards suture and peripher)

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; they may extend also onto base. In different forms but two more or less marked rows of nodes at and above outer edge of ramp appear in all known species. Growth-lines usually delicate but thread-like in last growth stase. Remarks — Hungariella resembles to Neritopsis GRATELOUP, 1832, however, there are important differences: — whorl cross-section and aperture are axially ovate in Hungariella but rather circular in Neritopsis; — aperture "D"-shaped in Hungariella but subcircular in Neritopsis; — columellar hp has sharp apertural rim (rudimentary plate) in Hungariella but rounded in Neritopsis. Significant differences between the two genera are in the characters of the ornament. The rows of nodes and nodulae, especially at rim of ramp, are specific elements in the sculpture of Hungariella. Comparable ornament was found in the Carboniferous and Permian members of the family (Jrachydomia MEEK & WORTHEN, 1866 and Trachjspira GEMMELLARO, G. G., 1889). These genera, similarly to Hungariella, have also usually more protruding and/or higher spired than the remaining Triassic neritopsids. [For a new Hymenoptera genus, ERDŐS (1946) also applied the name "Hungariella" that has to be obviously substituted.) Distribution — Hungariella species were found in Carnian and Norian strata of the Dachstein Limestone Formation in the Budai-hegység (= Buda Hills, the western part of Budapest, and the adjacent Hills along the W boundary of the city

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). Three species has been established on the material from two localities (Remete-hegy

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, Fazekas-hegy), the two frequent ones (H. pappi and H. stredae) are known from Carnian and Norian beds and they have been identified also from the Dachstein Limestone of the South Karawanke Mountains near Trzic in Slovenia ("St. Anna bei Neumarkti"; KUTASSY 1934). The third, sparse species (H. "spinosa') is justifiable only from the Fazekashegy Carnian. Hungariella pappi (KUTASSY, 1927) (Plate I: 1-9) 1927: Neritopsis Pappi n. sp. — KUTASSY, p. 153, Pl. Ill, Figs lOa-b (non: 10c-d). 1933: Hungariella pappi KUTASSY — KUTASSY, p. 240, Pl. I, 7-9. cf. 1934: Hungariella cfr. pappi Kl'TASSY — Kl'TASSY, p. 74. Neotype — M 2007.8.L, Plate I: 6-9. Type locality — Remete-hegy, Budapest. Type strata — Upper Triassic (Norian) Dachstein Limestone Formation. Material — Thirty-eight specimens (M 97.34. inventory N° refers also a H. stredae specimen, being inseparable).