You intrigue me, BB. Evolution implies that all life on Earth is related. The implication of common ancestry for any two species (if we go back far enough) seems to be an inevitable conclusion. How could there be a species with no roots at all in the great assembly of life on Earth?
No, it is not. Cows bear cows, dogs bear dogs, humans bear humans. We see this every day. We do not see, have never seen a species transform itself into another.