This is a simple sign of unknown meaning. It might represent a phytomorphic design - perhaps a tree or plant (?). This figure may also be unfinished as the lower lins might have been intended as legs and feet.
This panel depicts a "Ghost Dance". The two upper figures (men) are the dancers. The lower left figure represents a moon and the line indicates one-fourth moon, or one week, in which time the dance transpired.
Dinwoody Plate 51 The upper figure appears to be an Anthropomorphic design representing a face or mask. The lower figures are perhaps phytomorphic designs of trees or plants; they may also be symbolic designs.
This design, I believe, represents a Crow burial. The top part designates the wrapped body and it is resting on a tree or platform. There is no doubt of Crow workmanship, as the Shoshoni do not bury their dead in this manner. Of…