Because of differences in craniofacial morphology and dentition between the earliest American skeletons and modern Native Americans, separate origins have been postulated for them, despite genetic evidence to the contrary. We describe a near-complete human skeleton with an intact cranium and preserved DNA found with extinct fauna in a submerged cave on Mexico's Yucatan Peninsula. This skeleton dates to between 13,000 and 12,000 calendar years ago and has Paleoamerican craniofacial characteristics and a Beringian-derived mitochondrial DNA (mtDNA) haplogroup (D1). Thus, the differences between Paleoamericans and Native Americans probably resulted from in situ evolution rather than separate ancestry.

In this article, we provide the results of preliminary archaeological and epigraphic research undertaken at the site of Lacanjá Tzeltal, Chiapas. Field research conducted in 2018, in collaboration with local community members, has allowed us to identify this archaeological site as the capital of a kingdom known from Classic period Maya inscriptions as "Sak Tz'i'" (White Dog). Because all previously known references to the kingdom came from looted monuments or texts found at other Maya centers, the location of the Sak Tz'i' kingdom's capital has been the subject of ongoing modeling and debate among scholars. Here we synthesize prior epigraphic and archaeological research concerning Sak Tz'i', highlighting past efforts to locate the kingdom's capital. We then discuss the results of preliminary survey, mapping, and excavations of Lacanjá Tzeltal, and present the first drawing and decipherment of Lacanjá Tzeltal Panel 1, the sculpture crucial for centering this "lost" Maya kingdom.

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