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Ancestral-state reconstructions of (A) arcus suborbitalis, (B) m. pseudomasseter and, (C) m. etmomandibularis in Psittaciformes based on Parsimony analysis. Phylogenetic proposal modified from Tavares et al. (2006) and Wright et al. (2008). mps, most parsimony state; *data of the extinct Nandayus vorohuensis obtained from Carril et al. (2014b).
