Das Problem war, dass sie zwar an einigen Stätten gut dokumentiert waren, meist dort, wo es sehr schöne Tiere gab, aber an vielen Stätten war die Dokumentation sehr vage; es gab wenige Beschreibungen oder Details.
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.