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More amazing prehistoric discoveries in Riviera Maya cenotes

More amazing news about Riviera Maya cenotes and the ancient secrets that hidden in their depths. The Mexican Institute of Anthropology and History (INAH) has revealed that archaeologists and cave divers exploring a cenote in the Puerto Morelos area in the Riviera Maya discovered the fossilized skull of a new species of prehistoric giant ground sloth dating from the Late Pleistocene, between 10,647 and 10,305 years ago.

The expedition dive team was mapping the depths of the Zapote Cenote on the Ruta de los Cenotes when the discovery was made in 2010 but it wasn’t until 2014 that the skull and some of the bones and claws were removed for analysis and dating.

Before analysis could began the bones had to be dried out, a slow process carried out in sealed chambers in which humidity, light and temperature were carefully controlled round the clock. After three years of study, the results revealed that the sloth is a new species never seen before, it was given the name Xibalbaonyx oviceps, an allusion to Xibalba, the Maya Underworld.

The skeleton was found at a depth of 50 to 55 meters and experts believe that the giant sloth may have fallen to its death when the cenote was either dry or the water level was much lower.

Sea level rises during the Early Holocene period 10,000 years ago caused the flooding of cave systems and cenotes to fill with water in the Yucatan Peninsula. A source of fresh water for all creatures, they became time capsules, preserving the bones of prehistoric animals and traces of the earliest human settlers of the area. To date, the bones of 14 other sloths have been found in 11 caves and have yet to be identified.

Giant ground sloths originated in South America and experts believe that they migrated towards North America nine million years ago. A sea once separated North and South America. and they are thought to have crossed it and moving through the Caribbean from island to island and also between islands forming what are now Panama and Central America. More studies are needed on this migration and their evolution.

This find follows other amazing discoveries of prehistoric bones and fossils and Mayan ceramics, offerings and artifacts found in Riviera Maya cenotes.

(Source: INAH)


Photo courtesy of Vicente Fito, INAH

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