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

Authors

  • Ilona Bodrogi Geological Institute of Hungary, 14 Stefdnia ut., H-1143 Budapest,
  • Elena A. Yazykova-Flidlider University of Silesia, Będzińska st,: 60, 41-200 Sosnowiec
  • Atilla Fogarasi Eatvos Lorand University, Department of Geology; 4/A Museum krt., H-1088 Budapest
  • M. Baldi-Beke Rakoczi u. 42, H-2096 Uerom

Keywords:

Upper Cretaceous, Santonian, Campanian, Ammonites, Hungary

Abstract

A revision of the ammonites from the Bakony Mountains (Hungary) 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 of Pachydiscus (P.) praecolligatus COLLIGNON, 1955 from the Sumeg area; this is a typical Campanian species. Two specimens of former "Lower Maastrichtian Pachydiscus neubergicus (HAUER)" from Haraszt quarry have been re-determined as Early Campanian Eupachydiscus levyi (GROSSOUVRE, 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)

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Published

2003-01-01

Issue

Vol. 51 No. 1 (2001)

Section

Articles