Harrington, H. J. and Leanza, A. F. (1952) “The classification of the "Olenidae" and the "Ceratopygidae" (Trilobita)”, Revista de la Asociación Geológica Argentina, 7(3), pp. 190-206. Available at: https://revista.geologica.org.ar/raga/article/view/974 (Accessed: 22November2024).