Similarity does not prove evolution. If a scientist who had never seen a dog of any sort were presented with the skeletons of a chihuahua, an English bulldog, and an Irish wolfhound, he would immediately declare them to be three separate and distinct species.
Not so. The way to tell if 2 different looking animals are the same or different species is to cross-breed them and see if fertile offspring result.
So, you don’t like chemistry and you don’t like phenotypic similarities.
What do you like?
BTW, you’d be surprised at the underlying similarities among domestic dogs. And the chemistry works beautifully.
Not one fossil of a platypus-like (but not a platypus) creature has ever been found.
That’s your statement before somebody proved to you that those exact fossils have been found.
Similarity does not prove evolution.
That is an entirely different point than your first. Can you at least acknowledge that you were utterly wrong on point one?