Considering the energetic depositional environment of the Proto-Orange deposits, it is somewhat surprising that remains as fragile and small as those of insectivores are preserved at Arrisdrift. Three species have been discovered, a chrysochlorid, an erinaceid and a tenrecid, all of which are similar in overall aspect to material from the Early Miocene of Kenya and Uganda. The taxa recovered confirm an Early to basal Middle Miocene age for the deposits.