A new analysis of the hand of the 4.4-million-year-old partial skeleton of Ardipithecus ramidus indicates that the human ancestor may have climbed and swung through trees like chimpanzees do. As a ...

Ardipithecus ramidus may have walked upright ... robustus had a large, "robust" (heavier, thicker) skull, as well as a jaw and large teeth that were well adapted to chewing.

Ardipithecus ramidus may have walked upright ... robustus had a large, "robust" (heavier, thicker) skull, as well as a jaw and large teeth that were well adapted to chewing.