The presence of glossopterids at the top of the upper section of the Ansilta Formation suggests, as in all Gondwanan continents, a Permian age for the fossil beds. Also, the presence of Ferugliocladus seems to constrain the age to the
early Cisuralian.
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Citación:Cesari, Silvia Nelida; Gaido, Maria Fernanda; Cegarra, Marcelo I.; Anselmi, Gabriela; Limarino, Carlos Oscar; The first record of permian flora in the Ansilta Formation (western precordillera of Argentina) and its regional correlation; Asociacion Paleontologica Argentina; Ameghiniana; 51; 5; 10-2014; 428-432