Phylogeny
Morphological characters and mitochondrial cytochrome b DNA sequences showed that ''P. echinothrix'' represents one independent evolutionary lineage within the genus ''Proechimys'', without clear phylogenetic affinity for any of the 6 major groups of species.References
Proechimys Mammals of Brazil Mammals of Colombia Mammals described in 1998 Taxa named by Maria Nazareth Ferreira da Silva {{Echimyidae-stub