“…NCCLs have also been described in fossil hominins, the majority of which are 'toothpick grooves' (Ubelaker et al, 1969;Boaz and Howell, 1977;Frayer and Russell, 1987;Brown and Molnar, 1990;Milner and Larsen, 1991;Bermudez de Castro et al, 1997;Turner and Cacciatore, 1998;Ungar et al, 2001;Hlusko, 2003;Bouchneb and Maureille, 2004;Kaidonis et al, 2012;Lozano et al, 2013;Tillier et al, 2013;Ricci et al, 2014;Sun et al, 2014;Frayer et al, 2017). Anterior teeth can be affected, but most grooves are present in the interproximal areas of the premolars and molars (Formicola, 1988;Frayer, 1991;Ungar et al, 2001), with buccolingual micro-striations often evident (Bouchneb and Maureille, 2004;Grine et al, 2000;Hlusko, 2003;Lozano et al, 2013;Estalrrich et al, 2016;Sun et al, 2014). The enamel, dentine, and/or cementum are affected depending on groove depth and location, i.e., above, below or directly on the CEJ.…”