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Early human ancestor 'Lucy' was a bad runner, and this one tendon could explain why
Live Science ^ | published December 26, 2024 | Kristina Killgrove

Posted on 12/29/2024 11:19:26 AM PST by BenLurkin

The human ability to walk and run efficiently on two feet arose around 2 million years ago with our Homo erectus ancestors. But our earlier relatives, the australopithecines, were also bipedal around 4 million years ago. Given the long arms and different body proportions of species like Australopithecus afarensis, though, researchers have assumed that australopithecines were less capable of walking on two legs than modern humans.

In a study published online Dec. 18 in the journal Current Biology, a team of researchers modeled the skeletal and muscular anatomy of Lucy to determine her maximum running speed, the energetic costs associated with running, and her running endurance.

...

Australopithecines like Lucy had large upper bodies, long arms and short legs, which likely limited their running speed. But the researchers discovered that another potential reason for Lucy's slow, inefficient running may have been a differently shaped Achilles tendon and triceps surae, a group of muscles in the calf.

Modern humans have a long, spring-like Achilles tendon, the researchers noted, which connects calf and ankle muscles to the heel bone. This anatomical arrangement provides humans with the powerful and efficient ankle crucial to high running performance.

(Excerpt) Read more at livescience.com ...


TOPICS: Science
KEYWORDS: ancientautopsies; angrykeywordtroll; crevo; fakenews; fauxiantroll; fauxiantrolls; godsgravesglyphs; ifhfakescience; kristinakillgrove; lucy; nothumanancestor; paleontology; piltdownman; storkzilla
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To: wildcard_redneck

Looks like he did time in prison.


41 posted on 12/29/2024 2:34:35 PM PST by DesertRhino (2016 Star Wars, 2020 The Empire Strikes Back, 2024... RETURN OF THE JEDI..)
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To: Fuzz

“Except the species Lucy was from was bipedal.”

So they claim. For decades all T-Rex skeletons had them standing upright and dragging their tails.


42 posted on 12/29/2024 2:36:17 PM PST by DesertRhino (2016 Star Wars, 2020 The Empire Strikes Back, 2024... RETURN OF THE JEDI..)
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To: Fuzz
Ok - lets try again, since you want to be obstinate... I'll strive for more accuracy:

They found bones scattered over a very broad area, lumped them together and called them "Lucy"... these included various bones and a jaw... No proof that they are all even from the same animal/person/thing. But hey - it fits a narrative. But regardless - there are NOT enough bones here, even if we assume they are from one individual specimen, to recreate what they are claiming.

Here is the grand total of bones found (and again, no evidence they are from ONE individual):


43 posted on 12/29/2024 2:45:28 PM PST by TheBattman (Democrats-Progressives-Marxists-Socialists-Satanists: redundant labels.)
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To: DesertRhino
"Looks like he did time in prison."

Yes he does. Here is a pic of his lawyer. Check out the eyes, very human due to the scores showing. Japanese women find him 'sexy.'


44 posted on 12/29/2024 2:45:46 PM PST by wildcard_redneck
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To: wildcard_redneck

Meant ‘sclera’ not score. It is the white of the eye which typically in great apes is not visible.


45 posted on 12/29/2024 2:48:31 PM PST by wildcard_redneck
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To: TheBattman

Yes. Lots of bones were found in the area. It was a treasure trove of fossils because in that area because that’s where they lived and the conditions were right for decent preservation.

Fossils were found ranging in age from 2 to up to over 3 million years old.

The incredulity on sites like this usually sound like yours where the motives of the researchers is questioned as if they are attempting to deceive everyone.

While some people are deceptive in every walk of life, the evidence is overwhelming. You’re unwillingness to accept it does not matter.


46 posted on 12/29/2024 2:54:52 PM PST by Fuzz
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To: TheBattman

And lol at me being obstinate.


47 posted on 12/29/2024 2:55:23 PM PST by Fuzz
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To: DesertRhino

So they claim?

You have more accurate research to share?


48 posted on 12/29/2024 2:56:33 PM PST by Fuzz
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To: BenLurkin

She ran like a girl?


49 posted on 12/29/2024 2:56:38 PM PST by mware
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To: JBW1949; bgill

50 posted on 12/29/2024 3:17:52 PM PST by 4Liberty (One person’s Socialism is another’s neighborliness. -Tim Walz)
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To: wildcard_redneck

“That is just normal, chimp muscle mass.“

Which is actually much stronger than human muscle tissue pound for pound. Higher “twitch” or some such thing. Which means that a fairly stringy armed chimp could still throw a man around fairly easily. The one in the pic could yank off a man’s arm as an after thought.


51 posted on 12/29/2024 3:24:47 PM PST by TalBlack (Time to use the Law and the Power. Good luck Mr. President.)
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To: BenLurkin

As long as she could outrun Mr. Lucy and those who came after, she was in store for a long life.


52 posted on 12/29/2024 3:35:45 PM PST by BobL
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To: Fuzz

Yeah... they found one jawbone for “Lucy”. The rest was assembled from a few bone bits here and there they found near there. Abd by near I mean with a few miles.


53 posted on 12/29/2024 4:02:53 PM PST by DesertRhino (2016 Star Wars, 2020 The Empire Strikes Back, 2024... RETURN OF THE JEDI..)
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To: DesertRhino

‘ Abd by near I mean with a few miles.’

You are completely full of sh@t.


54 posted on 12/29/2024 4:14:27 PM PST by Fuzz
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To: StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 2ndDivisionVet; 31R1O; ...
Enter topic at own risk. Flame festival.

55 posted on 12/29/2024 4:43:29 PM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: Recovering Ex-hippie
Evolution is science. Guess you still believe in Adam and eve. I don’t anymore

No, I believe in evolution. But it happened in different places at different times, and Europeans and Asians are not descended from "Lucy."

56 posted on 12/29/2024 4:51:22 PM PST by montag813
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To: Fuzz

There is no such thing as a transitional form, link, whatever.


57 posted on 12/30/2024 4:00:06 AM PST by RaceBannon (Rom 5:8 But God commendeth his love toward us, in that, while we were yet sinners, Christ died for )
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To: BenLurkin
Modern apes have the same problem.


58 posted on 12/30/2024 5:31:35 AM PST by jmcenanly (You have enemies? Good. That means you've stood up for something, sometime in your life.” ― Winston)
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To: Fuzz

This has been beat on here on FR in the past (quite a few years ago). The facts haven’t changed. https://freerepublic.com/focus/f-backroom/1651429/posts


59 posted on 12/31/2024 11:28:47 AM PST by TheBattman (Democrats-Progressives-Marxists-Socialists-Satanists: redundant labels.)
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To: TheBattman

Answers in genesis? No. Not reputable.


60 posted on 12/31/2024 1:10:26 PM PST by Fuzz
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