Muyil, Quintana Roo, Mexico is an ancient Maya site 25 km south of Tulum on the Caribbean east coast. It is 15 km inland from the shore, but with sea access via canals and lagoons. Recent investigations at the site provided architectural and survey data which are analyzed here by two techniques. First, the 69 larger and better preserved structures of 290 mapped structures are analyzed by architectural modes and seriated by means of a computer program written in PROLOG (programming in logic) to build a seriation model for Muyil architecture with possible extensions to other east coast sites. Secondly, the structures are fitted into an architectural typology used by Freidel and Sabloff for the architecture of Cozumel, and extended to include 188 structures of 18 other east coast sites by Sullivan in 1988. The results of the analyses are used to suggest a preliminary culture history for Muyil, and to propose several avenues of new research involving the architecture of the east coast and Coba and future excavation strategies at Muyil
