In my opinion, when it comes to the origins of man and Genesis, the CCC has been corrupted by Scientism. In this respect, it is not a reliable source of sound Catholic teaching. Its bias towards the evolutionary paradigm is painfully obvious.
For example, as far as I know, nowhere in the entire CCC does it say that Catholics are free to believe in a literal interpretation of Genesis - on the contrary, there is an obvious and untraditional emphasis on a figurative or symbolic interpretation. The reason for this is clear - it facilitates the acceptance of evolution.