Lucas Et Al 2011 Stegomastodon Mammalia Proboscidea From the Pliocene of Jalisco, Mexico
Guzman-Gutierrez & Aguilar 2010 Presence of the Complex Mammuthus Hayi-meridionalis in Aguascalientes Mexico ICAZ 2010 Abstracts Volume
Guzman-Gutierrez Et Al 2008 Proboscidean Tracks CRP