We don’t know everything about our early ancestors—but we keep learning more! Paleoanthropologists are constantly in the field, excavating new areas with groundbreaking technology, and continually filling in some of the gaps about our understanding of human evolution.
Below are some of the still unanswered questions about Ardipithecus ramidus that may be answered with future discoveries:
1. Does the pelvis of Ar. ramidus support the hypothesis that this early human species was bipedal? The pelvis was reconstructed from crushed fossils and, according to some scientists, is only suggestive of bipedalism.
2. What is the average size of male Ar. ramidus individuals? If more fossils support the original finding of relatively low sexual dimorphism, how does this relate to male and female size differences in other early humans at the base of our family tree -- and what does it mean?
- Smithsonian National Museum of Natural History, Human Origins Program: http://humanorigins.si.edu/evidence/human-fossils/species/ardipithecus-ramidus
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