Acta Geologica Polonica, Vol. 51 (2001), No.1, pp. 93-99

Revision of the Upper Cretaceous ammonite fauna of the Bakony Mountains (Hungary).

ILONA BODROGII & ELENA A.YAZYKOVA-FLIDLIDER2 with contributions of ATILLA FOGARASI3 and M. BALDI-BEKE4

I Geological Institute of Hungary, 14 Stefdnia ut., H-1l43 Budapest, Hungwy 2University of Silesia, Bedzinska st,: 60, 41-200 Sosnowiec, Poland. E-mail: [email protected]

3 Eatvos Lorand University, Department of Geology; 4/A Museum krt., H-1088 Budapest, Hungwy. E-mail: [email protected] 4Rdk6czi u. 42, H-2096 Grom, Hungw}'

ABSTRACT:

BODROGI,1. & YAZYKOVA-FLIDLIDER, E.A. 2001. Revision of the Upper Cretaceous ammonite fauna of the Bakony Mountains (Hungary). Acta Geologica Polonica, 51 (1), 93-99. Warszawa.

A revision of the ammonites from the Bakony Mountains (Hungaty) based on collections of the Geological Institute of Hungary (MAFI) in Budapest, revealed the following sequence of faunas. The youngest Campanian ammonites from the South Bakony are three specimens ofPachydiscus (P.)praecolligatus COLLIGNON, 1955 from the Siimeg area; this is a typical Campanian species. Two specimens of former "Lower Maastrichtian Pachydiscus neubergicus (HAUER)" from Haraszt quany have been re-determined as Early Campanian Eupachydiscus levyi (GROSS OUVRE, 1894). The fragmentary specimen of Mortoniceras sp. has been determined as Texanites (Texanites) sp. from the Upper Santonian. Two ammonite zones can be recognised for these sequences: Texanites sp. (Santonian) and Eupachydiscus levyi (Lower Campanian).

Keywords: Upper Cretaceous, Santonian, Campanian, Ammonites, Hungary.

INTRODUCTION extent of the marine succession is re-evaluated and con­ sidered to be Lower Santonian to Campanian (G. cal­ For nearly twenty years there has been considerable carata Zone), in contrast with the Upper Santonian to debate about the Upper Cretaceous parastratigraphy of Upper Maastrichtian range determined from paly­ the Bakony Mountains, Hungary (Text-fig. 1), based on nomorphs by F. GOCZAN (1973), BONA (in HAAS & al. palynomorphs, foraminifera and nannoplankton (Smo 1984), F. GOCZAN & A. SIEGL-FARKAS (1989) and A. 1980, 1982; F'ELEGYHAzy 1983, 1985; PARTENYI 1986; SIEGL-FARKAS (1983, 1993, 1994). Since the beginning BODROGI 1993, 1995; BODROGI & al. 1995, 1996). of the century (Loczy 1913) until the present day Recent revision of the biostratigraphy of the Upper (HAAS & al. 1984, BERCZI-MAKK & al. 1996), the exis­ Cretaceous of the Bakony Mountains was based on tence of Maastrichtian strata has been inferred from foraminifers and nannoplankton. It has proven that the occurrence of Pachydiscus (P.) neubergicus (HAUER) Maastrichtian formations are absent in the area in the vicinity of Siimeg. These discrepancies point to between Bakonyjak6 and Siimeg. The stratigraphical the need for a revision of the ammonite fauna. 94 ILONA BODROGI & ELENA A.YAZYKOVA-FLIDLIDER

SLOVAKIA

-Budapest

Fig. 1. Geological map (after TAR! 19.95) of the investigated area

The sedimentology, stratigraphy and correlation hole is as follows (after HAAs & al. 1984): Ajka Coal of the Upper Cretaceous sequences of the Bakony Formation (101,0 - 162,7 m), ?Coniacian - Lower Mountains, based on the new data from ammonites, Santonian; Jak6 Marl Formation (38,5 - 101,0 m), foraminifers and nannoplankton, have been recently Upper Santonian (Csingervolgy Member, 70,0 - 101,0 published (BODROGI & al. 1997, 1998). We give here m, and Upper Member, 38,5 - 70,0 m); Pol any Marl new data from the Sumeg Sut-22 borehole section Formation (Rendek Member, 13,0 - 38,5 m), Upper (Text-fig. 2) and a revision of the ammonite collec­ Santonian - Lower Campanian. tion. For more detail lithological description of the units All the ammonites were derived from the Rendek see HAAS & al. (1984). The pelitic marine intercalations Member of the Pohiny Marl Formation, with the excep­ in the upper part contain foraminifera (BODROGI 1995, tion of Placenticeras polyopsis (DUJARDIN) that was unpublished) of Late Santonian age. The Rendek derived from the Csingervolgy Member of the J ak6 Member of the Pol any Marl is interpreted as distal Marl. All the ammonites were re-determined (again, gravity mass flow deposits (HAAS 1981, HAAS & al. with the exception of P. polyopsis). 1984, BERCZI-MAKK & al. 1996).

SUMEG SUT-22 BOREHOLE SECTION (TEXT-FIG. 2) SYSTEMATIC PALEONTOLOGY

This borehole was drilled in the central part of Order Ammonoidea ZITTEL, 1884 the Sumeg Harazt area, near the Harazt and Varosi Suboder Ammonitina HYATT, 1889 quarries (Text-fig. 1). This is the type-section of Jak6 Superfamily Desmocerataceae ZITTEL, 1895 Marl and Ajka Coal Formations in the Sumeg area. Family Pachydiscidae SPATH, 1922 The 149,7 m thick Upper Cretaceous sequences were deposited over the Late Aptian Crinoidea Tata Genus Pachydiscus ZITTEL, 1884 Limestone Formation and are overline by clastics. The lithostratigraphy and subdivision of the bore- TYPE SPECIES: Ammonites neubergicus HAUER (1858, iL.CRETACEOUS UPPER CRETACEOUS TERT. UJ 1 V.APTIAN . CONIACIAN-L.SANTONIAN ----· UPPER SANTONIAN C~ TArA LIMEST. AJKA COAL JAK MARL ~ V.MEMBER ~ ~---.------v­ .... v­ 00 C1 3;:3 a :::.8 <3 a v, .... a r:/J C: n ct ~ tv ~ tTl I [/),::;, N ~ S N n (D tTl (Jq 0 [/) c::: s: to Vl N tv 0 ~ oV ~ ~ >-! 0 (D ~ ::r z o ) ::j (; ::r: tTl Vl '"(D 0 tr1 ~ ~ O· ~ 0 , I E ~ I ~ '" I ,t::;1 1t::;1 "0 >-l ~. ) , I. I. '& 0>®~ .'" ...,P> ::r:: S­ '-+ '--+- ~ ~ t v- () tTl O' n P> til P> IJj :;J Cl :;:.C:1 '""';:; () -~ 0 ~ ..., » '-< (l 2 7i S I: { A (l :l P> ~ • ~~ ~ v,P> (l 3 P> 0 S· !f -8.. , '-< P> ::l Z a: '%j - (1) ~ 3 s ~g -< ~ g; ! 0 ~c: P> :1. ..., :;J a: n" '" v-. x_. iJ () "'"~ .3~ !c. 3 _. P> 3 - Sigalia deflaensis 0 '" ....!:. c::: '"0. ~ Vi' - Vidalina hispanica z "c- '<'" "0 '" :t 3 ~ '" ... 0' to - Nummofallotia cretacea '"o 0 Z 'D'" ;;;' Goupillaudina lecontrei "Vl r ::r:: fl o CTIro '8:l ~ Goupillaudina cf. ostrowsky c::: '"~ z o () ",l:;: ." ,» 5 :l.g ",,,--<'" ~ ,:;j - Vaginulina scalariformis ~ '"~ ~ to (D ;;j":t " Nonionella cretacea ~ ::;. '";0 ~ -s () • -"no<> "ti N~ - Cornuspira cretacea '" ~ x" "1j -<~ - Epistomina supracretacea ... " ~ ".., ...:) - Rotalia reicheli ~ is- ~ !l. I~ :·------Dlcarinellac:~~etrica;~-~ ~~~~v. l!- 'Dco 96 ILONA BODROGI & ELENA A.YAZYKOVA-FLIDLIDER p. 12, PI. 2, Figsl-4, by subsequent designation of DE 1938. Eupachydiscus levyi GROSS OUVRE; COLLIGNON, p. 14, GROSSOUVRE, 1894, p. 177). Text-fig. A; PI. 3, Fig. 3. 1955. Eupachydiscus levyi GROSSOUVRE; COLLIGNON, p. 34, Pachydiscus (Pachydiscus) praecolligatus COLLIGNON, Fig. 5. 1955 1977. Eupachydiscus levyi GROSS OUVRE; COLLIGNON, p. 30, PI. (PIs 2-3; PI. 4, Fig. 1) 619, Fig. 2305. 1980. Eupachydiscus levyi GROSSOUVRE; BLASZKlEWICZ, p. 41, 1952. Pachydiscus praecolligatus; COLLIGNON, p. 66, PI. 21, Fig. 1; PI. 31, Figs 1-2. PI. 25, Figs 2-3. 1994. Eupachydiscus levyi (GROSSOUVRE); WIEDMANN in 1955. Pachydiscus praecolligatus; COLLIGNON, p.64, Text-fig.19, GISCHLER & al., p. 236, PI. 43, Figs 8-9. PI. 21, Fig.l; PI. 25, Figs 2-3. 1997. Eupachydiscus levyi (GROSSOUVRE); ATABEKIAN in 1970. Pachydiscus precolligatus COLLIGNON; COLLIGNON, p.40, ARKADEV & al., p. 123, PI. 48, Fig. 4; PI. 49, Figs 1-3. PI. 624, Fig. 2313. 1998. Eupachydiscus levyi (GROSSOUVRE); KENNEDY & JAGT, p. 1994. Pachydiscus (Pachydiscus) precolligatus COLLIGNON; 159, PI. 4, Figs 1-3; PI. 5, Figs 1-3; PI. 6, Figs 3-4 WIEDMANN in GrscHLER & al., p. 234, PI. 43/6, 7; Fig. 16b. HOLOTYPE: Pachydiscus levyi GROSS OUVRE, 1894, p. 178, PI. 21, from Lower Campanian of Carrieres de HOLOTYPE: Designated by COLLIGNON (1952) Contes-Ies-Pins, the Alps. Pachydiscus praecolligatus, p. 66, PI. 21, Fig. 1(= 1955, p. 64, Fig. 19, PI. 21, Fig. 1), Campanian, Madagascar. MATERIAL: The two specimens (K-8645 and S-448) from the Siimeg area, South Bakony, Hungary MATERIAL: Three specimens, K-2728 and S-373 la,b (Museum of the Hungarian Geological Institute - (two examples) from the Siimeg area, South Bakony, MAFI), collected by J. NoszKY. Hungary (Museum of the Hungarian Geological Institute - MAFI), collected by K. PAPP. DESCRIPTION: Both specimens well-preserved inter­ nal moulds. Medium to large size for genus. Semi-invo­ DESCRIPTION: Specimen K-2728 moderately well lute, involution[?] reaching over 70%, moderately com­ preserved internal mould; specimen S 373 Ib worn and pressed. Ventral side rounded. Whorl section oval and corroded; specimen S-373 la fragmentary. Coiling high, higher than wide. Umbilicus comprising estimated moderately involute, involution reaching over 70% in 30-34% of diameter; moderately narrow, shallow, with some specimens; moderately .compressed. Umbilicus a low, steep wall. Ornament consisting of strong, coarse comprising estimated 20-24% of diameter. Ventral side ribs. These pro-sinuos on flanks, primaries starting with rounded. Whorl section broadly rounded to subtriangu­ umbilical tubercle near umbilical edge, 1-3 shorter sec­ lar, higher than wide. Whorl section with small number ondary streams intercalated on flanks, all ribs crossing of blunt ribs and small tubercles. rounded venter with pronounced sinuosity (16 primary ribs corresponding to 36 external ribs per whorl). OCCURRENCE: Campanian of Madagascar; Lower Campanian of Spain; the specimens from Hungary are DISCUSSION: These specimens are similar to the Early Campanian in age (they were collected in Siimeg holotype, which has 14 primary and 36 external ribs per area, South-Bakony). whorl.

Genus Eupachydiscus SPATH, 1922 OCCURRENCE: Lower Campanian of Europe, Crimea, Caucasus and Middle Asia; upper Lower TYPE SPECIES: Ammonites isculensis REDTENBACHER, Campanian of Madagascar. The Hungary specimens 1873; WRIGHT, 1957, p. L380. are from the Lower Campanian of the Siimeg area, South-Bakony. Eupachydiscus levyi (GROUSSOUVRE, 1894) (PI. 4, Fig. 2; PI. 5) Superfamily Hoplitaceae H.DOUVILLE, 1890 Family Placenticeratidae HYATT, 1900 1894. Pachydiscus levyi; DE GROSSOUVRE, p. 178, PI. 21; PI. 30, Genus Placenticeras MEEK, 1870 Figs 1-2. 1922. Eupachydiscus levyi GROSSOUVRE; SPATH, p. 124. TYPE SPECIES: Ammonites placenta DE KAY, 1828. CRETACEOUS AMMONITES FROM THE BAKONY MOUNTAINS, HUNGARY 97

Placenticeras cf. polyopsis (DUJARDIN, 1837) 4 equally spaced tubercles (umbilical, ventrolateral and (PI. 1, Fig. 2) 2 lateral).

1837. Ammonites polyopsis; DUJARDIN, p. 237, PI. 17, Fig. 12 OCCURRENCE: This specimen was collected from 1983. Placenticeras polyopsis (DUJARDIN); KENNEDY & the Upper Santonian of the Siimeg area, South Bakony, WRIGHT, p. 856, Figs 1-4; PIs 86-88 (and synonymy). Hungary. It is similar to Texanites (Texanites) texan us 1986. Placenticeras polyopsis (DUJARDIN); KENNEDY, PI. 21, (ROEMER) from the Santonian of North America and Figs 5-9. North Africa. 1986. Placenticeras polyopsis (DUJARDIN); PARTENYI, p. 519, Figs 1-2. 1994. Placenticeras polyopsis (DUJARDIN); GISCHLER & ai., p. CONCLUSIONS 238, PI. 43, Figs 10-12. l. Forms formerly identified as Maastrichtian LECTOTYPE: The original of DUJARDIN (1837, PI. 17, Pachydiscus (P) neubergicus (HAUER) (one specimen [?] Fig. 12) from Touraine, France; designated by KENNEDY collected by K. PAPP (Nr.K-2728) and 2 specimens col­ and WRIGHT 1983, p. 856. lected by KOCSIS) are revised as Lower Campanian Pachydiscus (P) praecolligatus COLLIGNON. The latter MATERIAL: One fragmentary specimen (K-14583) was described by COLLIGNON from the Campanian of from the Siimeg area, South Bakony, Hungary Madagascar (COLLIGNON 1955, p. 64, Fig. 19, PI. 21, (Museum of the Hungarian Geological Institute - Fig. 1). At present, this species is also known from the MAFI). Lower Campanian of Spain (GISCHLER & al. 1994, p. 234, PI. 43/6; Fig. 16B). DESCRIPTION: One fragmentary specimen (K- 14583) from the Upper Santonian marls is referred to 2. Another two specimens, that were also deter­ this species by SUMMESBERGER (PARTENYI 1986). Partial mined previously as Maastrichtian Pachydiscus (P) neu­ whorl with slightly convex sides and narrow venter; faint bergicus, are re-determined as the Lower Campanian falcate ribs and umbilical tubercles. Eupachydiscus levyi (GROSSOUVRE) (collected by KOCSIS - S-448 and another - by NoszKY, K-8645). OCCURRENCE: Lower and Middle Santonian of Eupachydiscus levyi was described by GROSSOUVRE Spain; Upper Santonian of Germany, Austria, France, from the Lower Campanian of Alps Mountains u.K. and North America. (GROSSOUVRE 1894, p. 178, PI. 21). This species is also known from the Lower Campanian of Spain, France, Poland and Madagascar (COLLIGNON 1932, 1938, 1955, Superfamily Acanthocerataceae GROSSOUVRE, 1894 1970; GISCHLER & al., 1994). Family Collignoniceratidae WRIGHT & WRIGHT, 1951 Subfamily Texanitinae COLLIGNON, 1984 3. One fragmentary specimen (1983/2), referred Genus Texanites SPATH, 1932 earlier to Mortoniceras sp. (BUDAI & VINCZE 1981, Subgenus Texanites SPATH, 1932 unpubl.), is determined here as Texanites sp., a view supported by SUMMESBERGER (pers. comm. 1995). [?] TYPE SPECIES: Ammonites texan us ROEMER, 1852, (SPATH 1932). 4. Specimen K-14583 was determined as Placenticeras polyopsis (DUJARDIN) by H. Texanites (Texanites) sp. SUMMESBERGER (PARTENYI 1986). We conclude that (PI. 1, Fig. 1) this specimen cannot be identified with confidence.

MATERIAL: One fragmentary specimen (1983/2) of 5. The revision of the Late Cretaceous ammonite an internal mould from the Siimeg area, South Bakony, fauna from the Siimeg-Csabrendek area demonstrate Hungary (Museum of the Hungarian Geological that the ammonite-bearing layers are Santonian to Institute - MAFI). Campanian and not Maastrichtian, as previously thought (BODROGI & al. 1998). Two ammonite zones DESCRIPTION: Specimen referred to Texanites based could be recognised for these sequences: the Texanites on its generally compressed sides, high whorl section, Zone in the Santonian, and the Eupachydiscus levyi narrow venter with entire keel and straight ribs having Zone in the Lower Campanian. 98 ILONA BODROGI & ELENA A.YAZYKOVA-FLIDLIDER

Acknowledgements COLLIGNON, M. 1932. Fossiles du Cretace superieur du Menabe.Annales de Paleontologie, 21, 35-87, Paris. The authors thank Director K. BREZSNYANSZKY, KORDOS 1938. Ammonites campaniennes et maestrichtiennes de and T BUDAI (Budapest) for the material and support of this l'ouest et du sud de Madagascar. Annales Geologiques du project. The sincere thanks are to Herbert Ch. KLINGER (Cape SCll'ice des Mines de Madagascar, 9, 53-115, Tananarive. Town), W James KENNEDY (Oxford), Jake M. HANCOCK - 1952. Ammonites neocretacees du Menabe (Madagascar).

(London), Herbert SUMMESBERGER (Wien) and Ashot A. II.- Les Pachydiscidae. Annales Geologiques du Sel1 Jice des ArABEKlAN (St.-Petersburg) for their help in ammonite revi­ Mines de Madagascar, 41,1-114, Tananarive. sion. The authors offer their gratitude to I. WALASZCZYK - 1955. Ammonites neocretacees du Menabe (Madagascar). (Warsaw) for helpful discussions and to J. CRAl\lPTON (New II.- Les Pachydiscidae. Annales Geologiques du Selllice des Zealand) for suggestions and linguistic correction markedly Mines de Madagascar, 21, 1-98, Tananarive. improving the final version of this paper. - 1970. Atlas des fossiles caracteristiques de Madagascar The researches were supported by the Hungarian National (Ammonites). XVI. (Camp ani en inferieur), 1082 p. Science Foundation (OTKA) Projects Nos. T 015783 and T Republique Malgache Sc/l'ice Geologique, Tananarive. 033234. FELEGYHAZY, L. 1983. Deli- Bakonyi tengeri felso kreta for­ maci6k nannoplankton szrati- grafiai vizsgalata (Nannoplankton stratigraphy of marine Upper Cretaceous REFERENCE formations of the southern Bakony Mts.). MSc. thesis, EolVOS University, Department of Geology, 1-81. Budapest. ATABEKlAN, A.A., BOGDANOVA, T.N., BARABOSHKlN, E.Yu. & - 1985. Research into the nannoplankton stratigraphy of the ARKADIEv, VV 1996. Ammonites. 111: VV ARKADIEV & Upper Cretaceous in the southern Bakony Mountains. TN. BOGDANOVA (Eds), Atlas of the Cretaccous fauna of Annual Report of the Hungarian Geological Institute, 1983, the SW Crimea. SPGGI (Technical University), "Pangea", 143-155. Budapest. 107-145. St.-Peterburg. [Tn Russian] GISCHLER, E., GRAFE, K.-U. & WIEDMANN, J. 1994. The BODROGI, I. 1993. Stratigraphic subdivision and correlation of Upper Cretaceous Lacazina Limestone in the Basco­ Cretaceous formation of Transdanubia, Northern Cantabrian and Iberian Basins of Northern Spain: Cold­ Calcareous Alps, Styrian Basin and Vorarlberg on the water Grain Association in Warm-water Environments. basis of foraminifers and calcareous algae. C. Sc. Thesis, 1- Facies, 30, 209-246. Erlangen. 28. Budapest. GOCZAN, F. 1973. Oberkretazischc Kohlenbildung in Ungarn 1995. The Santonian/Campanian boundary in the im Lichte der Palynologie. Proceedings of 3rd International "Senonian" of the Bakony Mts. (1l'ansdanubian Range). 2nd Palynological Conference, Moscow 1971, pp. 28-35. Intemational Symposium on Cretaceous Stage Boundmie5; Moscow. Brussels 8-16 Sept. 1995, Abstract Volume, p. 23. Brussels. GoczAN, F. & SIEGL-FARKAs, A. 1989. Palynostratigraphy of BODROGI, I., FOGAr.AsI, A., SZTANO, O. & BALDJ-BEKE, M. 1996. the Rendek Member of the Pol any Marl Formation. Upper Cretaceous of the Bakony Mts. (HungalY): sedimen­ Annual Report of the Hungmian Geological Institute, 2, tology, biostratigraphy, correlation. 5th International 1988,47-87. Budapest. Cretaceous Symposium. 2nd Workshop on Inoceramids, HAAS, J., JOCHA-EDELENYI, E., GmAL, L. KAISER, M., Freiberg/Saxony, September 16-24, 1996, Abstract Volume, p. KRETZor, M. & ORAVECZ, J. 1984. Geology of the Siimeg 28. Freiberg. area. Geologica Hungarica Sel1es Geologica, 20, 1-239, BODROGI,I., YAZYKOVA E.A. & FOGARASI, A. 1997. Revision of Budapest. Upper Cretaceous Ammonites fauna of the Bakony Mts. KENNEDY, WJ. & JAGT, WM. 1998. Additional Late (Hungary). EUG 9 European Union of Geosciences 23-27 Cretaceous ammonide records from the Maastrichtian March 1997, Strasbourg (France). Abstract of oral and poster type area. Bulletin de L'InstilU! Royal des Sciences presentations, p. 693. Strasbourg. Naturelles de Belgique, Sciences de la Terre, 68, 155-174. BODROGI, I., FOGARASI, A., YAZYKOVA, E.A., SZTANO, O. & Brussel. BALDJ-BEKE, M. 1998. Upper Cretaceous of the Bakony Loczy, L. (sen.). 1913. A Balaton kornyekenek geologiai kep­ Mts. (Hungaty): sedimentology, biostratigraphy, correla­ zodmenyei es ezek videkek szerinti telepedesc.- i\. Balaton tion. Zentralblatl fiir Geologie lind Paldontologie, 1996 Tudomanyos Tanulmanyozasanak Eredmenyei. I., (11/12), 1179-1194. Stuttgart. Budapest. BUDAI, T, 1982. A PO!;lny Marga Formaci6 plankton PARrENYI , Z. 1986. Az elsa Placenticeras polyopsis (DUJARDlN) faraminifera (Planktonic foraminifers of the Pol any Marl lelet a magyarorszagi szenonb61. Annual Report 0/ the Formation). M.Sc. Thesis, Eotvos University, Department 0/ Hungarian Geological Institute, 519-521. Budapest. Geology, 1-81, Budapest. Smo, M. 1980. Zonation of the Senonian formations based on CRETACEOUS AMMONITES FROM THE BAKONY MOUNTAINS, HUNGARY 99

planktonic foraminifers, A revision. Rep. Archive of the - 1994. Palynologische Untersuchungen an ausgewahlten Hungarian Geological1l1slilut, 16012, 1-17, Budapest. Vbrkommen der Gbsauschischten Osterreichs. - 1982. Foraminifera investigations of the Senonian forma­ lubilawnsschrift 201iihre Geologische Zusammenarbeit oster­ tions in the boreholes Zgy. 1, Cr 2, Gy.9. Archive of the reich-Ungam, 2,107-122. Wien Hungarian Geological1I1slitut,. 13780, 1-23. Budapest. TARI, G. 1995. Eoalpine (Cretaceous) tectonics in the Alpine­ SIEGL-FARKAS, A. 1983. Palynology of the Senonian forma­ Pannonian transition zone. In: HORVATH, F., TARI, G. & tions at Magyarpohlny. - Oslenytani vitak. (Discussiones BOKOR, CS. (Eds), Hungw}'." extension collaps of the Alpine Palcontologicae), 1 (29), 59-69. Budapest. orogene and hydrocarbon prospects in the basement and - 1993. Palynostratigraphy of the Upper Cretaceous in basin fill oJ the westem Pannonian Basin, pp. 133-156. Hnngary. Cretaceous Research, 14. London Budapest.

Manuscript submitted: 10th JanuaJY 2000 Revised version accepted: 10th October 2000 ACTA GEOLOGICA POLONICA, VOL. 51 1. BODROGI & E. A.YAZYKOVA-FLIDLIDER, PL. 1

PLATE 1

1- Texanites (Texanites) sp., N 1983/2; Texanites Zone, Upper Santonian, Hungary, South Bakony Mountains, Sumeg area

2 - Placenticeras cf. polyopsis (DUJARDIN), N K-14583; Texanites Zone, Upper Santonian, Hungary, South Bakony Mountains, Sumeg area

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PLATE 2

Pachydiscus (Pachydiscus) praecolligatus CQLLIGNON; Eupachydiscus levyi Zone, Lower Campanian, Hungary, South Bakony Mountains, Siimeg area; I - N S/373- lb, 2 - N S/373-la.

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JI

PLATE 3

Pachydiscus (Pachydiscus) praecolligatus COLLIGNON; Eupachydiscus levyi Zone, :1 Lower Campanian, Hungary, South Bakony Mountains, Siimeg area; 1-N S/373- .•. 1 1b, 2 - N S/373-1a, 3 - N K-2728. J

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j J j

j ACTA GEOLOGICA POLONICA, VOL. 51 1. BODROGI & E. A.YAZYKOVA-FLIDLIDER, PL. 3 ACTA GEOLOGICA POLONICA, VOL. 51 1. BODROGI & E. A.YAZYKOVA-FLIDLIDER, PL. 4

PLATE 4

1 - Pachydiscus' (Pachydiscus) praecolligatus COLLIGNON, N K-2728; Eupachydiscus Zevyi Zone, Lower Campanian, Hungary, South Bakony Mountains, Siimeg area.

2 - Eupachydiscus Zevyi (GROSSOUVRE), N K-8645; Eupachydiscus Zevyi Zone, Hungary, South Bakony Mountains, Haraszt quarry, Siimeg area.

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PLATES

Eupachydiscus levyi (GROSSOUVRE); Eupachydiscus levyi Zone, Hungary, South Bakony Mountains, Haraszt quarry, Siimeg area; 1 - N S-448; 2 - N K-864S.

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