Metacryphaeus tuberculatus and Metacryphaeus australis (Trilobita, Phacopida) from the Devonian of the Paraná Basin: taxonomy and paleobiogeography - Carbonaro, Fábio Augusto; Meira, Felipe van Enck; Leme, Juliana de Moraes; Bosetti, Elvio Pinto; Ghilardi, Renato Pirani (Ameghiniana, 2016)