Caracterización bioestratigráfica de la Biozona Transversarium (Oxfordiense medio) en el sector oriental de la Cordillera Ibérica

Abstract

In NE Iberian Chain (E. Spain), the Transversarium Zone is developped in sponge limestone facies. All the subzones af this biozone have been characterised by means of ammonites. The basal, Parandieri Subzone, is only represented in the northwestern part of the studied area (Ricia). The uppermost, Rotoides Subzone, recent/y defined, has been recognised in al/ the localities