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DISTRIBUTION OF ALBIAN INOCERAMIDS IN SOUTHERN EUROPE
Gregori LÓPEZ
Inoceramids are pterioid bivalves disappeared Woods represented by scarce specimens. at the end of the Cretaceous period and have a Inoceramus athabaskensis McLearn is the only reputed biostratigraphical value. They are of species recognised in the Albian sequences of high importance to develop biostratigraphic the Navarro-Cantabrian Basin (Santamaría Cretaceous frameworks, similar to that of a and López, 1996). This species of big size is classical biostratigraphic tool, the ammonites. abundant in North America but has not been They are very abundant in basin and outer yet described in other European areas. platform sequences and their record allow Radial ribs species, as Actinoceramus sulcatus precise correlations, as in Western and (Parkinson) and Actinoceramus subsulcatus Eastern European areas. Nevertheless, Albian (Wiltshire), are not present in Spain, at despite inoceramids are not so diversified as those that they are abundant in France, especially at form Upper Cretaceous, and in many areas are the Bouches du Rhône in Southern France and restricted to the distribution of Actinoceramus in the Paris Basin at Northern France. genus. Rebutty, Vergons and other southern France localities show close similarities with Spanish Inoceramids are a very abundant bivalve group faunas; main differences are the absence of in the Spanish Upper Cretaceous sequences; radial ribs species in Spain and the absence of but they are very scarce on Albian sequences. big size species as I. athabaskensis in France. They are just represented by few species at the Internal Prebetic (Alicante province), Mallorca Island and the Navarro-Cantabrian References Basin.
Heinz (1936) studied Albian inoceramids from GALLEMÍ, J., LÓPEZ, G., MARTÍNEZ, R., MUÑOZ,
Spain for first time, describing species J., PONS, J. M. 1997. Albian-Cenomanian collected in few localities at the Mallorca and Campanian-Maastrichtian bios- Island, and Wiedmann and Kauffman (1978) tratigraphy of southeast Spain. Cretaceous studied later some specimens from the same Research, 18: 355-372. locality. Albian sequences at the Internal HEINZ, H. 1936. Inocerámidos de Alicante, Prebetic show some beds with abundant Valencia y Baleares. Boletín de la Real inoceramids (Gallemí et al. 1997); but these Sociedad Española de Historia Natural, inoceramids are just restricted to two species 36, 91-99, 1 pl. widely distributed in Europe: Actinoceramus SANTAMARÍA, R., LÓPEZ, G. 1996. Aspectos concentrica (Parkinson) represented by bioestratigráficos de los ammonites e abundant specimens and Inoceramus anglicus inocerámidos (Bivalvia) del Albiense
1st International Meeting on Correlation of Cretaceous Micro- and Macrofossils Vienna 16th – 18th April, 2008
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superior al Maastrichtiense de la provincia Spain. Annales du Museum d’Històire de Alava. Revista Española de naturelle deNice. IV Mid-Cretaceous Paleontología, (Núm. ext.), 148-159. events reports on the biostratigraphy of
WIEDMANN, J., KAUFFMAN. E. G. 1978. Mid- key areas, 4, III.1-III.34, 12 pls. Cretaceous biostratigraphy of northern
Gregori LÓPEZ Department Geologia (Paleontologia) Facultat de Ciencies Universitat Autònoma de Barcelona E-08193 Bellaterra Spain e-mail: [email protected]
1st International Meeting on Correlation of Cretaceous Micro- and Macrofossils Vienna 16th – 18th April, 2008