This work is a continuation of two papers devoted to the biostratigraphical distribution of benthic foraminifera at the Oligocene-Miocene boundary and during the Miocene (Cahuzac et Poignant, 1993a, 1993b) and a third one (in press) on the Serravallian of Aquitaine. In the present paper, a new distribution chart is presented. The Aquitanian, Burdigalian and Serravallian are observed in the North and South of Aquitaine, the Langhian only in the South. The Aquitanian (stratotype in the Bordelais, northern Aquitaine) corresponds to the foraminiferal planktonic zones N4 and N5 pars and to the nannoplancton zone NN1 and NN2 pars, the Burdigalian (stratotype pro parte in the Bordelais) to the N5 pars to N7 and to NN2 pars to NN4 zones, the Langhian to the N8-N9 and NN5 zones; at last, the Serravallien, which is incomplete in Aquitaine, to N11 pars to N13 pars and to NN6 to probably NN8 pars zones.The approximate limit of the shoreline at the Lower Miocene and Middle Miocene is proposed; the Middle Miocene is widely transgressive eastward and southward.The smaller benthic foraminifera are highly abundant during the Lower Miocene, then their number decreases mainly in the Serravallian where shallow facies prevail. The hyaline foraminifera are the most frequent such as the genera Bolivina, Ammonia, Nonion, Elphidium, Elphidiella. More than 120 species have been selected for the biostratigraphical chart. It allows to evidence the first appearance of Ammonia beccarii, Elphidiella falunica at the base of the Miocene or of Hopkinsina bononiensis primiformis, Elphidium fichtelianum praeforme, Burseolina calabra, Discorbinella bertheloti during the Lower Miocene; at the base of the Serravallian, it can be noticed the first appearance of the genus Pseudoeponides, of Cymbaloporetta squammosa, Bannerella gibbosa, Uvigerina pygmoides…The Microproblematica are represented by two genera : Bolboforma and Bachmayerella mainly known in the Serravallian.Several taxonomical remarks are made on some genera such as Bolivina, Latibolivina, Elphidiella, Elphidium, Pararotalia, Neorotalia… A few species of minor importance are reported, some of them for the first time in Aquitaine. Five plates illustrate the most interesting species for biostratigraphy, some rare species and Microproblematica.