 Some modern isolates such as the Pericúes of Baja California and the Fuegians of Tierra del Fuego exhibit that same morphological trait.Other anthropologists advocate an alternative hypothesis that evolution of an original Beringian phenotype gave rise to a distinct morphology that was similar in all known Paleoamerican skulls, followed by later convergence towards the modern Native American phenotype.Resolution of the issue awaits the identification of a Beringian phenotype among paleoamerican skulls or evidence of a genetic clustering among examples of the Australoid phenotype.