Wait til they find out that its caused by opposite sex gene expression caused by chemicals in the food and water like atrazine.

What is the requirements for fossilization? I'll give you a hint: flood.

No sorry, those are classes of animals. We want a direct chain of specific animals.

Mutations are almost always deadly when they are additive and they disrupt the DNA RNA and protein networks causing sickness and death. The best you can get is a loss Mutation or a neutral inert mutation.

Natural selection is an observable fact, evolution is a theory that was disproven by the stoekle mitochondrial DNA study.