“…During the 1940s and 1950s, the Argentinian naturalist Carlos Rusconi discovered key Cambrian outcrops in the southern Precordillera of Mendoza, western Argentina, and described large numbers of invertebrates including trilobites, hyoliths, mollusks, brachiopods, and sponges (Rusconi, 1946(Rusconi, , 1954a(Rusconi, , 1955(Rusconi, , 1956Cerdeño, 2005). These pioneering investigations, together with additional contributions of Leanza (1947), V. Poulsen (1958), and C. Poulsen (1960), gave great impetus to the understanding of the paleontology of Mendoza, which was subsequently refined by up-to-date systematic revisions of Rusconi's collections at the Museo J.C. Moyano (e.g., Palmer, 1965;Robison, 1988;Tortello and Bordonaro, 1997;Bordonaro, 2014;Tortello, 2018Tortello, , 2020 and the study of additional trilobite faunas (e.g., Bordonaro and Liñán, 1994;Shergold et al, 1995;Bordonaro, 2003Bordonaro, , 2014Bordonaro and Fojo, 2011;among others). Most of these fossils come from early Miaolingian to late Furongian limestone allochthonous blocks (olistoliths) occurring within Middle and Upper Ordovician shales (Bordonaro et al, 1993;Keller, 1999).…”