In the religion of Old Europe, death and regeneration are expresses as two interdependent, contiguous aspects of one deity. The female womb with its fallopian tubes resembles the shape of a bull's head with horns, which may well account for the prevailing use of this motif to represent regeneration. This Goddess is also rendered as a bee, butterfly, moth or other insect, sometimes having the anthropormorphic head of the Goddess. This Middle Minoan image of the Goddess is shown as a Butterfly Rising from between the horns of a bull's head. Here just the butterfly is represented depicting the resurrection of new life.
The Civilization of the Goddess, Marija Gimbutas Pg. 243-247