The settlement of Yiftah’el is famous for its early domesticated lentil seeds, which were radiocarbon dated before the end of the 1980s. It seems justified to combine all lentil dates, though one of the dates is between 7790 BC and 7480 BC and the rest between 7960 BC and 7750 BC. These dates provide a time range ante quem for the burials excavated in the 1990s.

Unfortunately, it is not possible to synchronize the modelled skulls, found in 2008, to the recently published stratigraphy. According to information from the excavators, the settlement ends at around 7000 BC (Khalaily et al. 2008). It is therefore impossible to determine whether the skull burials should be attributed to the middle PPNB or a later horizon. Provisionally, the skulls could be attributed to a late phase of the middle PPNB, though it must be kept in mind that they could also date to the late PPNB.