I hate to break it to you, Barb, but Pakicetus, Ambulocetus, and Rhodocetus are, one by one, being falsified, and their "whale features" are being withdrawn by "whale evolution experts" and even by the discoverers themselves.
https://kgov.com/evidence-against-whale-evolution
http://thegrandexperiment.com/whale-evolution.html
https://youtu.be/b1PU2ut8n8g
In other words, the evidence is that whales, in fact, did NOT evolve, and that the "transitional fossils" you evolutionists like to claim show it are forged fakes.
This is called an appeal to authority. It is a fallacious argument. It's also false.
There is a perfectly valid explanation for the fossilization of ANY creature.
It's called the Hydroplate Theory, a model of the Biblical Flood of Noah. It says that the ENTIRE so-called "geologic column" was laid down by flood waters.