And a knee joint that was found almost 2 miles away then claimed to belong to the same skeleton?????
On November 20, 1986 Donald Johanson, Lucy's discoverer, lectured at the University of Missouri, Kansas City. After showing slides of Lucy, Johanson showed another slide of a knee-joint, and gave reasons why this fossil helped confirm Lucy as a pre-human ancestor. Johanson was then asked by Roy Holt: "How far away from Lucy did you find the knee?". Johanson replied that the knee-joint was found "60-70 metres lower in the strata, and 2-3 kilometres away." When asked, "Then why are you so sure it [the knee-joint] belonged to Lucy?" Johanson answered, "Anatomical similarity." (Tom Willis, "'Lucy' Goes to College", CSA News, Cleveland MO, February 1987).
Only a femur was found with the bones of Lucy - not a knee joint. They are simply assuming - because they want it to be so, that the knee bone belongs to the same hominid as Lucy. Note that no knee joint was ever found with the bones of Lucy - likewise no femur was found with the knee joint. There is nothing even remotely connecting the two except pipe dreams and wishful thinking.
The claim is based upon the leg bone angle, yet present day orangutan and spider monkeys have the same angle as humans yet are adept tree climbers. Even though the portion of the lower jaw was v-shaped totally unlike humans, but similar to an orangutan - they decided to claim it was more human-like than monkey like.
Pipe dreams and wishful thinking is what makes it similar to humans - not facts.
What does that quote of yours demonstrate? Donald Johanson published a book in 1981 detailing the find, including specifics of the discovery of the knee joint.... it's no secret or cover up, besides, plenty of fossils of A Afarensis have been found since then.
The claim of bipedality is based on much more than 'leg angle' and a knee joint as you would discover if you bothered reading any sources other than creationist websites. Deny it all you like but the scientific consensus is that A Afarensis walked upright and although it is very ape-like it also exhibits some human characteristics.
Anyway, I haven't really got time to discuss this today, I just wanted to balance your claims with the views of people who are actually experts in this field, Plenty information about A Afarensis is freely available if you are prepared to look beyond the creationist propaganda.
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