I think I have come to understand your view of evolution that would lead you to believe in a FIRST somethingorother.
Your View:
At one point in time, there was a species of animals that would have been called (had there been people to name them) StinkaDoos. StinkaDoos looked somewhat like modern kangaroos but they had very rounded ears. Also, their forearms were much longer than those of modern kangaroos. Finally, instead of one pouch, they had two pouches, one each where upright mammals' breasts would be.
In your view, a male and a female StinkaDoo had sex and out popped, lo and behold, the first-ever kangaroo. Not too far away, two other StinkaDoos had sex and gave birth to the second-ever kangaroo. Years later the two Roos mated giving rise to all the kangaroos we see today.
So, tell me,
@lostwanderingsoul, is that your view of evolution?