Rujukan WikiPedia: Borophagus http://darkwing.uoregon.edu/~rhunt/publications.ht... http://www.naturalworlds.org/wolf/history/Osteobor... http://www.nhm.org/expeditions/rrc/wang/Carnivorep... http://www.nhm.org/expeditions/rrc/wang/documents/... http://paleodb.org/cgi-bin/bridge.pl?action=checkT... http://tools.wmflabs.org/timescale/?Ma=23.3-3.6
