01508caa a22002894a 4500 40429 AR-SsjUBGM 20251220110814.0 251215nuuuuuuuuxx 000 0 spa d AR-SsjUBGM AR-SsjUBGM spa Ramos, V. A. 53557 El Mar Paranense en la provincia de Jujuy. Relevamiento: 1995. The finding of two original letters written by Florentino Ameghino to Hermann von Ihering, permitted to identity a possible marine fossil locality of Miocene age along the cliffs of Río Grande de Jujuy. The feasibility of the true existence of this fossil locality is judged through the analysis of the extension and age of the Paranense sea. This marine transgression is coeval with the deposits of the Amazon Sea. Both reflect tectonic-loading subsidence of the Andean forelad related to important Miocene shortening. The concidence of this shortening with the 12 Ma high stand of sea level controlled the marine flooding of most the South America foreland basins. Geología general Geología regional Manga del Tethys Neógeno Jujuy 276 Artículo 24605 Alonso, Ricardo N. 13245 Instituto de Geología y Minería editor 41747 Revista del Instituto de Geología y Minería no.10, p.73-82 0326-9817 AR cdu idgym 40429 40429 0 0 cdu 0 0 GM GM 2025-12-20 0 Revista del Instituto de Geología y Minería, no.10 2025-12-20 00:00:00 2025-12-20 AR