Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 75. (Budapest 1983)
Szabó, J.: Lower and Middle Jurassic Gastropods from the Bakony Mountains (Hungary). Part V.: Supplement to Archaeogastropoda; Caenogastropoda
Ornament — The whorl-surface and the base are divided into bands by spiral grooves. Their number hardly increases with growth, rather their width grows. The angulation of the basal margin is accentuated by a carina. The run of the growth lines is somewhat opisthocyrt on the whorls and orthocline on the base. Only the whorls are ornamented with transverse folds, which are more regular and nearly rib-like on the juvenile whorls. The folds become flattened during growth, with increase in number per whorls. The internal moulds show traces of these latter elements only. Distribution — France, Normandy: Middle Liassic; ?Alps: Hierlatz limestone; Bakony, Kericser: Stokesi Zone. Remarks — For distincion of this form from K. undulata (BENZ) which also occurs in the Bakony Mts., see above. The similarly small spire-angled K. carusensis (D'ORB.) has more convex whorl-surface, but this is hardly a basis for distinguishing in the juvenile state, when the less-curved ribs of K. periniana are denser. Genus ANOPTYCHIA KOKEN, 1892 Anoptvehia turgida (STOLICZKA, 1861) (Plate II: fig. 4) 1861 : Chemnitzia turgida STOLICZKA, p. 165, pl. 1, fig. 5. Measurements: H HL HA D W A Plate II: fig. 4. — 10.4 6.5 7 — 15 : Material — Two fragmentary, one three-whorled and one four-whorled specimens. Shape — Dextral. high-spired, many-whorled shell. The whorls are convex, the last one goes without angulation into the similarly convex, anomphalous base. The suture is situated deeply within a groove. The aperture is circular, with fragmentary peristome in the available specimens. Ornament — The abapical side of the whorls and the whole base is sculptured by spiral lines. The transverse ornament consists of fine, slightly opisthocyrt growth lines and tiny folds on the juvenile whorls, parallel to the latter ones. The interspaces are more regular on the earlier shellparts, where the cords are more distinct, riblet-like, and bear tiny tubercles on the intersections with the spiral lines. Distribution — Northern Calcareous Alps: Hietiatz limestone; Bakony, Sümeg: ?Upper Sinemurian. Remarks — The two Bakony specimens are just distinguished from the description and figure of STOLICZKA by their measurements, but the ornament shows some differences, i. e. juvenile riblets are present in the former ones. However, the similarities in the proportions are so close, that one can attribute the lack of sculptural elements in the Hierlatz specimens to preservational causes. Similar to the Bakony specimens by ornament is the species Anoptychia crenata (STOLICZKA, 1861), but its spiral angle is greater by about 10 degrees, so its Plate I. Figs 13. Paraviviana! sp.. Somhegy, X2.5. Figs 4-5. Lewisiella acicula (STOLICZKA), Kericser, X 1.8. Fig. 6. Proconulus! cf. galatensis (GEMMELLARO, M.). Sümeg. X3.5. Figs. 7-10. Ventricaria! vesicula sp. n.. Somhegy. 7 = holotype, J 10134. Xl.8, 8-9 = a juvenile specimen, Xl.9, 10 = another juvenile specimen showing disappearence of angulation, X2.2. Figs 11-12. Proconulus ibbetsoni (MORRIS & LYCETT), Somhegy, X2.4. Fig. 13. Lamelliphorus! sp.. Sümeg. Xl.5. Figs 14-15. Lamelliphorus rhombifer (Uhlig), Somhegy, 14 = x2.4, 15 = ornament of another specimen, X 13.5
