Y. Tambareau et al., BENTHIC FOSSIL COMMUNITIES AROUND THE CRE TACEOUS TERTIARY BOUNDARY IN THE PYRENEES/, Bulletin de la Societe geologique de France, 168(6), 1997, pp. 795-804
The study of continental and marine benthic communities of the Cretace
ous/Tertiary transitional zone in the Pyrenees has shown, besides vari
ous extinctions (clavatoraceae, larger foraminifera), a severe impover
ishment of faunas and floras. These changes are analyzed among various
benthic fossil groups of continental and shallow marine environments;
then they are compared with changes in benthic deep sea ostracods ass
ociated with mass extinction in planktonic assemblages, at the Cretace
ous/Tertiary boundary, in order to have a better understanding of the
ecological processes which have driven them.