FIGURE 14.18. Ambulocetus natans, the primitive whale from the Eocene of Pakistan that still retains a mesonychid-
like head, large functional webbed hands and feet, and a semiaquatic mode of life. (A) Photograph of the nearly
complete skeleton laid out in anatomical position. (Photo courtesy J. G. M. Thewissen). (B) Reconstruction of
Ambulocetus lunging out of the water to capture another Eocene mammal. (Reconstruction by Carl Buell)
(A)
(B)