"Aragonian" is a Spanish term for a continental stage, roughly equivalent to the Middle Miocene or Astaracian (16–11 Ma).
Agusti, J; Moya-Sola, S (1990). "Mammal extinctions in the Vallesian (Upper Miocene)". Extinction Events in Earth History. Lecture Notes in Earth Sciences. Vol. 30. pp. 425–432. doi:10.1007/BFb0011163. ISBN 3-540-52605-6. ISSN 1613-2580. (Abstract) 3-540-52605-6
Casanovas i Vilar, Isaac (2007). "The rodent assemblages from the Late Aragonian and the Vallesian (Middle to Late Miocene) of the Vallès-Penedès Basin (Catalonia, Spain)" (PDF). University of Barcelona. p. 189. http://www.tdx.cat/bitstream/handle/10803/3443/icv1de1.pdf?sequence=1