Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 63. (Budapest 1971)

Nagy, I. Z.: Lower Cretaceous Cephalopods from the Mts. Bakony, Hungary

Remarks: The two specimens can convincingly be relegated to the species. No significant deviation from the published type-data can be observed. Occurrence: England (Cambridge, Greensand, substauderi, ? dispar zones); France (Vraconnian to the Lower Cenomanian); Switzerland (Vraconnian). Examined material: 2 specimens, stone molds partially with shell. Localities: Bakonynána, P; Nagyesztergál, W. Remarks: The whorls, habit, rate of constrictions correspond with those of the above species. The weak sulci between the constrictions are in rare cases proclinate in the ventral median line. The angle of proclination of either these or that of the large constrictions attains the angle characteristic of the species sharpei ; they do not subtend an acute angle. Roth specimens are rather badly preserved stone molds, precluding any nearer study. Occurrence: England (Cambridge, Greensand, substauderi zone); France, Switzerland (Vraconnian). Badly preserved sLone molds indicating the above genus, from Bakonynána B, and Pénzeskút, K

r Fam.: Hoplitidae II. DOUVILLÉ, 1890. Genus: Discohoplites SPATH, 1925. Examined material: 3 stone molds, partly with shells. Localities: Bakonynána B, Pénzeskút K

2

. Description: Whorl cross section a high trapezoid. Ratio of width to height as 0.63. Umbilical margin definite, steep. Ventral sulcus strong. Falcate ribs angled in lower third of lateral portion, then again arcuately decurrent anteriorad. Remarks: The suturai lines of the two stone molds cannot be studied. The proclinate ribs, more robust than the umbilical margin, decompose in the lower third of the lateral part into very fine falcate ribs which reach the ventral sulcus by decurrent anteriorad. The finely formed sulci somewhat differ from those of the species subfalcatus, but in want of other decisive features the examples sould be assigned to within the variational limits of the above species. Occurrence: England (substauderi and dispar zones); France (Salazacian Lower Vraconnian); Switzerland (Vraconnian); Transcaspia. Genus : Hijphoplites SPATH, 1922. Remarks: A 16 mm. long fragment of a whorl (M. 63.1606) from Nagyesztergál, W. The genus is definitely recognizable; besides the characteristic falcate ribs, the nodal series of the ventral margin near the ventral sulcus is also well visible. Puzosia (P.) aff. communis SPATH Puzosia sp. Discohoplites aff. subfalcatus (SEMENOW) (Plate III, Figs. 3, 4, 5) Hyphoplites sp.