References

 

Gingerich, P.D. 2011. Evolution of whales from land to sea. University of Michigan 156(3): 309-322.
 
Gingerich, P.D., M. ul-Hag, W. V. Koenigswald, W.J. Sanders, B.H. Smith, L.S. Zalmout 2009. New protocetid whale from the middle Eocene of         Pakistan: birth on land, precocial Development, and sexual dimorphism. PLoS ONE 4(2): e4366.

Gingerich, P. D., M. Anwar, M. Arif, M.A. Bhatti, and W.C. Clyde. 1998. Marine Eocene of Pakistan. Bulletin Carnegie Museum of Natural History      34:239-259.

Gingerich, P.D., S.M. Raza, M. Arif, M. Anwar, X.Y. Zhou 1994. New whale from the eocene of Pakistan and the origin of cetacean swimming.      Nature 368(6474): 844-847. <http://hdl.handle.net/2027.42/62571>.

Perkins, S. 2009. Early whales gave birth on land. Science News 175:5-6.

Uhen, M.D. 2010. The origin(s) of whales. Annual Review of Earth and Planetary Sciences 38:189-219.      <http://evolution.berkeley.edu/evolibrary/new/060101_batsars>.  Accessed 14 April 2014.

 

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