I watched the bear and the whale, but not the turkey. Perhaps Charles or Sharmuta can help here. I was very impressed by what was made from the evidence of the fossil remains of the animals and the narrative created therefrom. However, I was disappointed by questions I had that structure alone cannot answer. For example, one precursor of the bear had teeth capable of eating both flesh and vegetable matter. However, it was said that the animal was originally only carnivorous. I wish the process that occurs in the gut that permits a carnivore to live on plant life could be explained by the fossil evidence.

Also, the whale’s transformation is almost unbelievable. However, the fossil evidence could determine the freshwater fore bearers of the whale, but again, not the chemical process to move to saltwater. This would be of great interest, but is alas, so far as I know, unknowable from the fossil record.