Conjoined twins in antiquity: reality or part of the mythology?

Conjoined twins, was a known type of birth in antiquity. It was mentioned in manuscripts and depicted in terracotta figurines and vase paintings. Such findings were discovered in a variety of territories. Religion, local cult, and simple iconography of a known phenomenon create a debate among scholars to annotate their discovery. Gods and goddesses, magic figurines, sacred marriage, a binary hypostasis, or just Conjoined twins?