"Evolution requires enormous spans of time to account for the major differences between many forms of life.
Consider, for example, the enormous difference in size between a small dog-like creature and a modern whale. The behavioral differences are equally large between a dog and a whale. Yet despite these profound differences, evolutionary theory proposes that a small dog-like mammal is most likely one of the earliest whale ancestors in the whale’s evolutionary scenario/history/progression to modern whales.
Evolutionists attempt to bridge this gargantuan gap by invoking vast amounts of time. Barbara J. Stahl, Professor of Biology at Saint Anselm College, Manchester, New Hampshire, wrote that the difference between dogs and whales “is so great that the process must have begun at least as long ago as the early Paleocene and possibly even before that time at the end of the Cretaceous period.” In 1985, her explanation of why so much time is required is as follows:
"As with most tetrapods secondarily modified for aquatic living, ascertaining the terrestrial stock from which the whales came is exceedingly difficult… the extent of the change involved in the transformation of a terrestrial mammal into a completely oceanic one is so great that the process must have begun at least as long ago as the early Paleocene and possibly even before that time at the end of the Cretaceous period.”
CEH
