Caduceus is a continuation of the older Indo-European dragon-slayer motif. Wilhelm Heinrich Roscher (1913) pointed out that the serpent as an attribute of both Hermes and Asclepius is a variant of the "pre-historic semi-chthonic serpent hero known at Delphi as Python", who in classical mythology is slain by Apollo. One Greek myth of origin of the caduceus is part of the story of Tiresias, who found two snakes copulating and killed the female with his staff. Tiresias was immediately turned into a woman, and so remained until he was able to repeat the act with the male snake seven years later.
Scroll Serpent Scroll Serpent Scroll Serpent (Uneh Chan) was a Maya ruler of the Kaan kingdom. He ruled from AD 579 to 611. He acceded on September 2. Inscriptions at Palenque record two long-range attacks by Kaan during the reign of this powerful king in the years following the eclipse of Tikal's power and the ascendency of the Snake kingdom. In the dry season of AD 599 and then again 611 his forces crossed the Usumacinta River and struck Lakamha', the very center of Palenque. Scroll Serpent maintained an existing relationship by overseeing an action of Yajaw Te' K'inich II of Caracol