Cranial measurements taken from Howells (1989) and recorded from the modern identified human skeletal collection from Certosa cemetery of Bologna (Italy) are abbreviated as follows: GOL, maximum cranial length; NOL, nasio-occipital length; XCB, maximum cranial breadth; XFB, maximum frontal breadth; STB, bistephanic breadth; AUB, biauricular breadth; WCB, minimum cranial breadth; ASB, biasterionic breadth; NPH, upper facial height; NLH, nasal height; MAB, maxillo-alveolar breadth; MDH, mastoid height; MDB, mastoid breadth; ZMB, bimaxillary breadth; WMH, cheek height; GLS, glabella projection; FRC, frontal chord; FRS, nasion-bregma subtense; FRF, nasion subtense fraction; PAC, parietal chord.

*Stepwise selected measurements. (XLSX)