randman writes:
comparing the changes for the current whale suborders to the changes that would need to have occurred to transition a land mammal to a whale in 10-15 million years, the current whale suborders have shown remarkable stasis
hi randman,
first, the transition from land mammal to aquatic mammal took
at least 50 million years, not 10-15 (you are out to a factor of 5, so can we grant archaeocetes five time more "transition" than exists between contemporary species of aquatic mammal?)
second, the radiation of archaeocetes includes all whale-like mammals (i.e. dolphins too) not just true whales. Compare the right whale to the hump-backed dolphin:
right whale
dolphin
That ain't "remarkable stasis".