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Ammonite faunas from two Cenomanian outcrops in the “Chaînon du Pech de Foix” (Ariège, France), Sèzenac and the Cluse de Péreille, provide the first records of the guerangeri (lower Upper Cenomanian) and jukesbrownei (upper Middle Cenomanian) zones in the North-Pyrenean Cenomanian.
The first Bathonian ammonites found in measured sections in Canton Aargau (Switzerland) are described and figured: they are mainly tulitids, some oppeliids, rare perisphinctids and stephanoceratids. A comparative study of the ontogeny of the tulitids has allowed the number of genera to be reduced to three: Tulites Buckman, 1921, Bullatimorphites Buckman, 1921 and Morrisiceras Buckman, 1920. The dimorphism...
Recent studies on Upper Cenomanian-Lower Turonian outcrops from Cassis area allow to build a biolithostratigraphic framework from platform (La Bédoule section) to basin deposits (Cassis section), based on ammonites, planktonic foraminifera, inoceramids, rudists and ostracods. Four ammonite Zones are documented: the Late Cenomanian Geslinianum and Juddii Zones; the Early Turonian Nodosoides and, possibly,...
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