Assertion: human's skull | /r/CapableOf | represent step
Facets:
Source sentences:
text: Rightmire et al. have remarked that attempting to establish arbitrary boundaries between H. habilis and H. erectus is difficult when the Dmanisi skulls represent a step along the gradual evolution of the lineage, stating, "The assemblage seems clearly to be Homo but cannot unequivocally be grouped with either H. habilis or H. erectus.