The problem was that while they were well documented at some sites, usually the ones with the very nice animals, there was also a large number of them where it was very vague -- there wasn't a lot of description or detail.
Problema era că unele situri erau foarte bine documentate, de obicei cele cu animale foarte drăguțe, dar mai era și un număr mare unde totul era foarte vag - nu prea aveau descriere sau detalii.