Snail shell.
According to the first interpretation we can see an eagle that is the symbol of power and government, it is related to the sky and sun that in the Mesoamerican tradition is part of the duality of the eagle-jaguar, heaven and earth world. The image shows the call of the Lord who is protected by the eagle. You can see an eye and a beak pointing to the right. In the opposite direction is a leg or claw. The ornaments that decorate the head look like feathers and there are many more figures, which cover the surface like scales, pie plates and other symbols that look like flowers. As in the skull, the eagle´s head wears a headdress.