"The Platypus has a bill that resembles a duck's bill but is actually
an elongated snout covered with soft, moist, leathery skin and sensitive nerve endings. "
http://home.mira.net/~areadman/plat.htmYou might like to check out
http://www.platypusforum.org/ as well- especially the "Evolution" section.
Oh, and if the platypus usese it's bill like a duck perhaps that explains the shape.
Taxonomy is based on an analysis of the complete organism - or as complete as we can manage.
The rest of your post makes it quite clear that you really did mean that you deny the evidence for evolution on the grounds that you refuse to accept evolution as a possibility.
THat means that your original claim that the evidence for evolution rquired assumign evolution was false and misleading. Yet you seem prepared to make accusation of deception against others with no more basis than the fact that you refuse to accept that evolution is possible.
Let me correct some of your other errors. Evolution does not rely solely on point mutations. You have not truly considered the evolution of whales - nor how developmental biology works. You have not even considered the fact that whales are descended from ungulates, not dogs!
But thank you for demonstrating that your original claim is false and that there is no point discussing the evidence with you since you refuse to accept even the possiblity of evidence.
You have had evidence that does not resat on the assumption of evolution and you have offered no viable explanation for it. Looks like evolution wins again.