El Manatí "elongated man" style and are the oldest wooden artifacts yet found in Mexico. The rubber balls are also the earliest such items yet discovered and were possibly used in the Mesoamerican ballgame. The Olmec were a Pre-Columbian civilization living in the tropical lowlands of south-central Mexico, close to the border between the modern-day states of Veracruz and Tabasco. The Olmec flourished during Mesoamerica's Formative period, dating roughly from as early as 1500 BCE to about 400 BCE. Pre-Olmec cultures had flourished in the area since about 2500 BCE, but by 1600-1500 BCE Early Olmec culture had emerged centered around the
Olmecs earlier Olmec writing system and Mayan writing, the matter remains unsettled. The Long Count calendar used by many subsequent Mesoamerican civilizations, as well as the concept of zero, may have been devised by the Olmecs. Because the six artifacts with the earliest Long Count calendar dates were all discovered outside the immediate Maya homeland, it is likely that this calendar predated the Maya and was possibly the invention of the Olmecs. Indeed, three of these six artifacts were found within the Olmec heartland. But an argument against an Olmec origin is the fact that the Olmec civilization had ended by