HIRSCHFELD, Sue; WEBB, S. Plio-Pleistocene Megalonychid Sloths of North America. Bulletin of the Florida Museum of Natural History, [S. l.], v. 12, n. 5, p. 213–296, 1968. DOI: 10.58782/flmnh.inzu2148. Disponível em: https://flmnhbulletin.com/index.php/flmnh/article/view/flmnh-vol12-no5. Acesso em: 2 jun. 2026.