"Precisiones geográficas, estratigráficas y paleoambientales sobre los niveles portadores de cúpulas pteridospérmicas de la Formación Jejenes, Carbonífero de San Juan, Argentina"

Abstract

"The Carboniferous Jejenes Formation, has been known as a plant-bearing unit since the last century. Several studies ha ve revealed the presence of an important taphoflora; however, the precise fossiliferous sites mentioned in the original surveys remained as general references covering a wide geographic location. One of such sites has been discovered and is studied in detail herein, including the sedimentary environment of the plant-bearing horizons. This particular locality is a relevant si te because it contains abundant pteridosperm cupules in organic attachment to vegetative organs, which are described for the first time in the Carboniferous of Gondwana."