Quick facts. Denver Museum of Nature & Science. [27 June 2012]. (原始内容存档于2013-01-04).
doi.org
Lucas, S. G.; Alvarado, G. E.; Vega, E. The Pleistocene mammals of Costa Rica. Journal of Vertebrate Paleontology. 1997, 17 (2): 413–427. doi:10.1080/02724634.1997.10010985.
Lucas, S. G.; Morgan, G. S.; Estep, J. W.; Mack, G. H.; Hawley, J. W. Co-occurrence of the proboscideans Cuvieronius, Stegomastodon, and Mammuthus in the lower Pleistocene of southern New Mexico. Journal of Vertebrate Paleontology. 1999, 19 (3): 595–597. doi:10.1080/02724634.1999.10011169.
web.archive.org
Quick facts. Denver Museum of Nature & Science. [27 June 2012]. (原始内容存档于2013-01-04).