Laura,
I love how you described prehistoric imagery as a ‘doodled’ look – I think that describes its style (for lack of a better word) very well, which is especially seen in the stick figures. I also agree with your statement on the art being “sophisticated, especially considering how long ago it was made.” I think that is a great way of putting it – I couldn’t think of that word when writing my response, but I think it is a good way to put it. I think the statues might be riding the edge between ‘sophisticated’ and ‘abstract,’ however, considering the recurring style seen in the female statues. I agree with everything else you have to say though!