PAPERS PRESENTED IN SECTION IV .
L.COUREL, J. DOUBINGER, J.-C. GALL, J. LANGIAUX, Y. PAQUETTE, P. VETTER Relations entre paleoenvironnements et associations vegetales dans ies bassins limniques carboniferes du Massif Central Franfais
A.A. EL-KHAYAL, R. H. WAGNER.—Upper permian stratigraphy and megafloras of Saudi Arabia: Palaeogeographic and climatic implications
M. MUNOZ, E. ANCOCHEA, J. SAGREDO, J. A. DE LA PENA, F. HERN AN, J. L. BRANDLE, R. MARFIL.—Vulcanismo permo-carbonifero de la Cordillera Iberica
J. BROUTIN, J. GISBERT.—Entorno paleoclimatico у ambiental de la flora Stephano-Autu-niente del Pirineo Catalan
P. P. TIMOFEEV, В. V. POLYANSKY.—Facial zonation of early Mesozoic peat accumulation processes within the continental margin of the Tethys Asian Part