Uppermost Cenomanian ammonites from Eure, Haute-Normandie, northwest France

• Autorzy: Kennedy, W. , Juignet, P. , Girard, J.
• Języki publikacji: EN

Abstrakty

EN

Temporary exposures of chalks spanning the Cenomanian-Turonian boundary to the east of Brionne, Eure, Haute-Normandie, France, yielded well-preserved ammonite faunas. The Metoicoceras geslinianum Zone assemblage is: Pseudocalycoceras angolaense (SPATH, 1931), Sumitomoceras cautisalbae (WRIGHT & KENNEDY, 1981), Calycoceras (Calycoceras) sp.juv., Eucalycoceras pentagonum (Jukes-Browne, 1896), Euomphaloceras septemseriatum (CRAGIN, 1893), Metoicoceras geslinianum (D'ORBIGNY, 1850), Hamites cimarronensis (KAUFFMAN & POWELL, 1977), Allocrioceras annulatum (SHUMARD, 1860), and Sciponoceras gracile (SHUMARD, 1860). The succeeding Neocardioceras juddii Zoneassemblage is: Thomelites serotinus (WRIGHT & KENNEDY, 1981), Neocardioceras juddii juddii (BARROIS & GUERNE, 1878), Neocardioceras juddii barroisi WRIGHT & KENNEDY, 1981, and Thomasites gongilensis (WOODS, 1911). Imprecisely localised are Pachydesmoceras sp., and Nigericeras aff. scotti COBAN, 1972. The majority of the species are new for northern France, and confirm the northwards extension of typicallyTethyan taxa (Thomasites, Nigericeras) into the Boreal region during the uppermost Cenomanian, and previously recognized in southern England, as well as the occurrence of cosmopolitan acanthoceratids well-known at this level in the United States (Pseudocalycoceras, Sumitomoceras).

Słowa kluczowe

EN

ammonites; Cenomanian; Cretaceous; France; Turonian

• Czasopismo: Acta Geologica Polonica
• Rocznik: 2003
• Tom: Vol. 53, nr 1
• Strony: 1-18
• Opis fizyczny: Tabl. 6, tab.,Bibliogr. 101 poz.,

Twórcy

autor

Kennedy, W.

autor

Juignet, P.

autor

Girard, J.

• Geological Collections, Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, U.K.,