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

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

ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Tomus 63. PARS MINERALOGICA ET PALAEONTOLOGICA 1971. Lower Cretaceous Cephalopods from the Mts. Bakony, Hungary By I. Z. NAGY, Budapest The author publishes Cephalopods originating from the so-called "glauconitic" and "turrilitic" marls of the Mts. Bakony; the material is deposited in the Palaeontological Department of the Hungarian Natural History Museum, Budapest. On the basis of the faunistic list, the Upper Albian age of the strata can be established safely. The description of the fauna represented by the material is published now for the first time. Introduction In the territory of the Transdanubian Central Range, the "glauconitic" and "turrilitic" marl strata, originating from the border of the Lower and Upper Cretaceous, are formations known since long. Since the middle of the last century, many authors have discussed the faunistic —

stratigraphie conditions of these layers I

KOVÁCS; RÖMER, 1858; FOETTERLE, 1862; RÖMER, 1860; HAUER, 1861, 1862, 1870; TAEGER, 1909, 1910, 1911, 1913, 1914; DOUVILLÉ, 1930; NOSZKY,. J. jr., 1934; TELEGDI-RÓTH, 1935; NOSZKY, J. jr., 1951; 1966 (MS); KNAUER, 1969.] The Echinodermata, frequent in these strata, have been worked up by SZÖRÉNYI (1955), the phylogenetic analysis of the Mollusk faunas from the Aptian-Senonian of the Mts. Bakony was made by CZABALAY (1964). A systematic elaboration of the Cephalopods however, has not been published since HAUER (1861). I propose to submit in the present paper the Cephalopod fauna deposited in the Paleontological Department of the Hungarian Natural History Museum, Budapest. The material was partly collected at earlier times (NOSZKY, J. jr., Kocsis, etc.) partly by the present author. The capital letter symbols applied in the paper refer to the following localities (in the cases namely when several sites lie within the confines of the administrative locality): Bakonynána (B = "bifurcating valley"; G = Csigahegy; G = Gaja breakthrough; K = Kápár mill, on the Győr highway; P = quarry on the Pere road; R = Roman Baths); Jásd (Z = Zsidó mill), Nagyesztergál (W = great Weim-puszta), Olaszfalu (V = eastern side of the Mt. Villő), Pénzeskút (T = cemetery; É = Égetthegy; K

1 — Kőrisgyőrpuszta; K

2 = towards Kőrisgyőr), Tés (M = mill quarry). The state of preservation of the fossils is varying. In cases where circumstances preclude a complete study (meagre material, bad state of preservation, absence of sutures, etc.), an open name is used in the hope of possible future [revision based on more fortunate materials. The abbreviations of the measurements are: D = diameter, A = whorl altitude, Lt = whorl width, D—U = umbilical diameter. The numerical data refer to mm. values. All specimens are deposited in the Paleontological Department of the Hungarian Natural History Museum; inventory numbers (M.) are given only in the case of a direct citation or for certain specimens only. A discussion of the general and regional geological data can be found in details in the literature cited above. Statistical collations of the present amount of the material are not considered exigent, since the collection is unsuitable for such treatment as yet. The survey submitted below can be regarded as characteristic on the basis of the law of great