2010, M. G. Vucetich, A. G. Kramarz, A. M. Candela, 14: Colhuehuapian rodents from Gran Barranca and other Patagonian localities: the state of the art, Richard H. Madden (editor), The Paleontology of Gran Barranca, page 212,The erethizontids, with four genera (including eight species) achieved their greatest known diversity, representing 22% of the total diversity.
