Project 420: O'Leary, M. A.; B. A. Patel; M. N. Coleman. 2012. New data on the petrosal of Bothriogenys (Mammalia, Artiodactyla, Anthracotheriidae), and petrosal volume and density comparisons among aquatic
and terrestrial artiodactyls and outgroups. Journal of Paleontology. 86 (1):44-50.
