Etude floristique et biostratigraphique des Charophytes dans les séries du Paléogène de Provence

Publisher Website
Google Scholar
Abstract
An analysis is given of the floral distribution in the Upper Eocene and Oligocene of the South of France, in the areas of Apt-Forcalquier, Mormoiron-Pernes, Aix, Marseille, Pertuis, Montélimar and Barrême. The age of several of these formations is established especially that of the "Argiles des Milles" (near Aix-en-Provence) previously considered as Middle Oligocene and now attributed to the Upper Oligocene on the basis of charophyte data. Close similarities with the South of England (Isle of Wight) have been recognized for the Eocene-Oligocene transitional zones. A relationship with vertebrate (Rodent) biostratigraphy is suggested for the localities from the "Stampian" and "Aquitanian". From a systematic standpoint, the new sub-genus Microstomella of Nitellopsis Hy, and six new species, N. (M.) aptensis, Sphaerochara davidi, Stephanochara oodea, Harrisichara tumidula, Rhabdochara raibocarpa, R. altilis, are created. Two previously described form, Sphaerochara inconspicua n. comb, and Stephanochara ungeri n. sp. (= Croftiella escheri Horn af Rantzien) are revised. The non valid genus Croftiella Horn af Rantzien is replaced by Stephanochara Grambast.

This publication has 0 references indexed in Scilit: