The formation of commingled human bone assemblages is a key aspect for better understanding funerary rituals. The megalithic cemetery of Panoría (Spain) provides an excellent opportunity to explore bone assemblage formation thanks to the recent excavation of an undisturbed burial. For this purpose, we have approached the differential skeletal representation found between bone and teeth at the site through radiocarbon (14C) dating and Bayesian modeling. The comparison between the series of 14C dates on bone (n=12) and teeth (n=14) stress three main aspects: (1) the dates of teeth show a long period of funerary use before the deposition of the human bone remains; (2) both kinds of samples appear to be chronologically sequenced; the end of the teeth 14C series matches with the beginning of human bone deposition; and (3) bone remains span a short period, not more than a few decades, which probably represents the last episode of intense mortuary activity. These differences suggest that teeth could be the evidence of skeletal depositions subsequently removed from the tomb. The deposition and removal of bone remains emerge as key aspects in the formation of the bone assemblage.

An excavation carried out at the megalithic necropolis of Panoria in 2015 offered an excellent opportunity for dating a widespread variety of polygonal, rectangular, and trapezoidal-shaped tombs with short passages for which, surprisingly, there were previously no known radiocarbon (14C) measurements available. Based on the anthropological remains, a series of 19 14C dates was obtained and modeled in a Bayesian statistical framework. The results stress a long period of use that began in the Late Neolithic (3525–3195 cal BC), reaching the most intensive ritual activity during the Copper Age and ending in the Early Bronze Age (2125–1980 cal BC). Throughout this period, tombs were built at different times and used at different temporal scales and intensities, ranging from a few decades to centuries.