Drawing of Copan Altar G, South Side
Schele, Linda, and Peter Mathews. 1998. The Code of Kings: The Language of Seven Sacred Maya Temples and Tombs. New York: Scribner: 171, Fig. 4.38(b)
Schele, Linda, and David A. Freidel. 1990. A Forest of Kings: The Untold Story of the Ancient Maya. New York: William Morrow and Company, Inc.: 338, Fig. 8: 21
Altar G, South side, (GI/CPN 13). LC 126.96.36.199.0 (August 19. AD 800). Depicts a double-headed serpent with legs; skeletal snake with K'awiil emerging on west side and fleshed snake with a Pawahtun emerging on east side. Erected by Yax Pasah.
See also SD1009.