Jaw bone fossil discovered in Ethiopia is oldest known human lineage remains
Around 400,000 years older than previous discovery of homo lineage, 2.8m-year-old jaw and five teeth was found poking out of rocky slope in Afar region
Around 400,000 years older than previous discovery of homo lineage, 2.8m-year-old jaw and five teeth was found poking out of rocky slope in Afar region