Borrello, Ángel V. and Gareca, P. G. (1951) “On the presence of <Nemagraptus gracilis> (Hall) in the Ordovician from the north of San Juan”, Revista de la Asociación Geológica Argentina, 6(3), pp. 187-193. Available at: https://revista.geologica.org.ar/raga/article/view/962 (Accessed: 22November2024).