Muestra de maíz recuperada de Pozo 1B, Nivel 11, Elemento 6 (foso), contexto de la Fase Cherla (Clark 1994:547, Appendix 3).
Clark, J. E. 1994 The Development of Early Formative Rank Societies in the Soconusco, Chiapas, Mexico. Unpublished Ph.D. dissertation, Department of Department of Anthropology, University of Michigan, Ann Arbor.