RT Journal Article
T1 Estudio cuantitativo de los foraminíferos planctónicos en el estratotipo de! límite Eoceno/Oligoceno en Massignano (Apeninos, Italia)
T1 Planktic foraminiferaí quantitative study across the Eocene/Oligocene boundary stratotype at Massignano (Apennines, Italy)
A1 Gonzalvo Ballobar, C.
A1 Molina, Eustoquio
AB The quantitative study of the planktic Foraminifera from the Eocene/Oligocene boundary stratotype at Massignano (Apennines, Italy) has been accomplished for the first time, This study allow us to establish the fauna/ changes in the assemblages, showing a progressive decline of the surface dwellers, which are the more tipicai Eocene species that disappear during the Late Eocene. The faunal change is gradual, it accelerates at the Eocene/Oligocene boundary, but there is not evidence of mass extinction. Nevertheless, these extinctions represent about 40% of the total species that lived during the Late Eocene and were partially replaced by oportunistic species. Besides, the quantitative study provides a base for a more rigorous biostratigraphy
PB Sociedad Geológica de España
YR 1992
FD 1992
LK http://hdl.handle.net/10272/16339
UL http://hdl.handle.net/10272/16339
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026