www.famsi.org/reports/05051/index.html "Earliest know example of the quatrefoil motif." See the Kerr Vase listing at famsi - vase K4388 - Quatrefoils are a symbol of the God of Decapitation. "The Mesoamerican cosmic portal" by Brian Stross - res 29/30 spring/autumn 1996 John Drever