Uhen, M. D. 1998. Middle to late Eocene basilosaurines and
dorudontines; pp. 29–61 in J. G. M. Thewissen (ed.), The
Emergence of Whales. Evolutionary Patterns in the Origin
of Cetacea. Plenum Press, New York.
———. 1999. New species of protocetid archaeocete whale, Eocetus
wardii (Mammalia: Cetacea) from the middle Eocene of
North Carolina. Journal of Paleontology 73:512–528.
———. 2004. Form, function, and anatomy of Dorudon atrox
(Mammali, Cetacea): An archaeocete from the middle to late
Eocene of Egypt. University of Michigan Papers on Paleontology
34:1–222.
Uhen, M. D., and P. D. Gingerich. 1995. Evolution of Coryphodon
(Mammalia, Pantodonta) in the late Paleocene and early
Eocene of northwestern Wyoming. Contributions from the
Museum of Paleontology, the University of Michigan 29:
259–289.
Upchurch, G. R., Jr., and J. A. Wolfe. 1987. Mid-Cretaceous to
Early Tertiary vegetation and climate: Evidence from fossil
leaves and woods; pp. 75–105 in E. M. Friis, W. G. Chaloner,
and P. R. Crane (eds.), The Origins of Angiosperms and
Their Biological Consequences. Cambridge University Press,
Cambridge, UK.
Ursing, B. M., and U. Arnason. 1998. Analyses of mitochondrial
genomes strongly support a hippopotamus-whale clade.
Proceedings of the Royal Society of London B
265:2251–2255.
