If you're determined to be a Biblical literalist, or at least to pretend to be one (since no one is really one), you don't have to deny evolution. Indeed, there is a better option, that accepts that evolution occurred and says that God miraculously does evolution better than natural causes could!
Since there is no way that all the different “kinds” of animals that exist in the world could have fit into Noah's ark, young-earth creationists end up claiming that Noah took a smaller number of “kinds” into the ark, and that these then evolved into the varied organisms we see today, at a speed faster than mainstream biology claims that living things evolved.
Then you can claim to be a Biblical literalist, accept evolution, and claim that God does evolution better than science does. It seems like a win-win-win situation – so why persist in denying evolution?