Not necessarily. Our (religious) definition of "Man" is not the same as an anthropologist. Our first man is a man with a soul, not the "evolving" homo erectus, etc. A man has a soul, and the first such man was Adam, created by God with a spiritual soul. Thus, THIS is whom Christ came to save, and what nature He took up, the man with a soul, not the homo whatever (presuming that science is correct on this theory). We are open to this possibility, as it does not deny the Word of God.
Brother in Christ
So it was in God's plan that death be in the world from the start?