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^ abCooper, Lisa Noelle; Thewissen, J. G.M.; Hussain, S. T. (2009). "New middle Eocene archaeocetes (Cetacea: Mammalia) from the Kuldana Formation of northern Pakistan". Journal of Vertebrate Paleontology. 29 (4): 1289–1299. Bibcode:2009JVPal..29.1289C. doi:10.1671/039.029.0423. S2CID84127292.