Jeffrey’s Reviews > The Rise of Humans: Great Scientific Debates > Status Update
Jeffrey
is 8% done
Ch2
Australopithecus afarensis
Ancestor or not?
Debated by
Richard Leakey (son of louis and mary) - dont know for sure
Don Johanson - prob an ancestor
— Aug 22, 2026 11:03AM
Australopithecus afarensis
Ancestor or not?
Debated by
Richard Leakey (son of louis and mary) - dont know for sure
Don Johanson - prob an ancestor
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Jeffrey’s Previous Updates
Jeffrey
is 21% done
Ch5 dietary hypothesis
Gorillas - poor diet
Chimpanzees - better diet
Hominids - robust Australopithecines (paranthropus) versus gracile Australopithecines, jaws/ teeth were similarly adapted to their diets
Calcium and strontium are found in teeth in different ratios depending on diet inc strontium in vegetarians, inc Ca in carnivores
— Sep 20, 2026 02:58PM
Gorillas - poor diet
Chimpanzees - better diet
Hominids - robust Australopithecines (paranthropus) versus gracile Australopithecines, jaws/ teeth were similarly adapted to their diets
Calcium and strontium are found in teeth in different ratios depending on diet inc strontium in vegetarians, inc Ca in carnivores