New Hedbergella species from the Mid-Cretaceous Southeastern Nigeria

• M. Oláníyì Odébòdé ^[1]
  1. [1] Department of Geology, Univerity of Ife, Ile-Ife, Nigeria
• Localización: Revista española de micropaleontología, ISSN 0556-655X, Vol. 18, Nº. 3, 1986, págs. 423-431
• Idioma: inglés
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• Resumen

  • Two new planktonic foraminiferal species, Hedbergella sundaypettersi n. sp. and H. dessauvagiei n. sp. are described from the Cenomanian-Turonian (Mid-Cretaceous) Odukpani Formation on the Calabar Flank, Southeastern Nigeria.

    The two new forms have a highly restricted stratigraphic distribution within the formation. The planktonic foraminiferal assemblage with which they are associated dates the new species horizons of occurrence Upper-Middle to Uppermost Cenomanian. With their short stratigraphic range, the two species are regarded as good time markers on the flank.