MEXICO CITY.- Recent interdisciplinary investigations regarding 31 marine fossils found at Palenque Archaeological Zone, in Chiapas, reveal that Maya people conceived their beliefs parting from this kind of vestiges, so their idea of the underworld was associated to water. For Palenque inhabitants, marine fossils were the convincing proof of the land being covered by the sea long time ago, and parting from this fact they created their idea of the origin of the world, declared archaeologist Martha Cuevas, responsible, with geologist Jesus Alvarado, of research conducted by the National Institute of Anthropology and History (INAH) and the National Autonomous University of Mexico (UNAM). Ongoing for 3 years, the investigation is oriented to understand symbolism given by ancient Mayas to Prehistoric vestiges, specifically the 31 specimens found at the archaeological site. The INAH researcher mentioned that petrified rests have be