That's the eternal question for the anti-evolutionists. As you've noticed, they aren't at all familiar with what biology actually says about living things, but by gosh, the anti-evolutionists *know* it must be wrong anyway...
But since the devil's bride, Reason, that pretty whore, comes in and thinks she's wise, and what she says, what she thinks, is from the Holy Spirit, who can help us, then? Not judges, not doctors, no king or emperor, because [reason] is the Devil's greatest whore.Yeah, I got a source.
-- Martin Luther