@article{10272/16339,
year = {1992},
url = {http://hdl.handle.net/10272/16339},
abstract = {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},
publisher = {Sociedad Geológica de España},
title = {Estudio cuantitativo de los foraminíferos planctónicos en el estratotipo de! límite Eoceno/Oligoceno en Massignano (Apeninos, Italia)},
title = {Planktic foraminiferaí quantitative study across the Eocene/Oligocene boundary stratotype at Massignano (Apennines, Italy)},
author = {Gonzalvo Ballobar, C. and Molina, Eustoquio},
}