What are maskettes?

Some articles on maskettes:

Red Horn (Siouan Deity) - Red Horn in Archaeology - The Gottschall Pictographs
... nipple which resembles the long-nose god maskettes ... The face of the maskettes are of the same outline as that found around each nipple on the pictograph ... The stone Big Boy pipe from Spiro had long-nose god maskettes on each ear, and I would guess that is what Red Horn also wore on his ears and was the reason he ...