Skip to comments.Early Human 'Lucy' Swung from the Trees
Posted on 10/29/2012 2:12:45 PM PDT by SunkenCiv
Despite the ability to walk upright, early relatives of humanity represented by the famed "Lucy" fossil likely spent much of their time in trees, remaining very active climbers, researchers say.
Humans are unique among living primates in that walking bipedally -- on two feet -- is humans' chief mode of locomotion. This upright posture freed their hands up for using tools, one of the key factors behind humans' domination of the planet.
Among the earliest known relatives of humanity definitely known to walk upright was Australopithecus afarensis, the species including the famed 3.2-million-year-old "Lucy." Australopithecines are the leading candidates for direct ancestors of the human lineage, living about 2.9 million to 3.8 million years ago in East Africa.
Although Lucy and her kin were no knuckle-draggers, whether they also spent much of their time in trees was hotly debated...
The researchers found these bones had several details in common with those of modern apes, suggesting they lived part of the time in trees. For instance, the socket for the shoulder joint was pointed upward in both Selam and today's apes, a sign of an active climber. In humans, these sockets face out to the sides.
Lucy's adult shoulder sockets also faced upward, suggesting that, like modern apes, her species was equipped for tree-climbing throughout its life span. Humans, on the other hand, are born with a somewhat downward-facing socket that gradually moves to face outward as people mature.
(Excerpt) Read more at livescience.com ...
To help resolve this controversy, scientists looked at two complete shoulder blades from the fossil "Selam," an exceptionally well-preserved skeleton of a 3-year-old A. afarensis girl dating back 3.3 million years from Dikika, Ethiopia. The arms and shoulders can yield insights on how well they performed at climbing. (Shown here, Selam's cranium, face and mandible.) CREDIT: Image courtesy of Zeray Alemseged / Dikika Research Project
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To all -- please ping me to other topics which are appropriate for the GGG list.
Maybe because Lucy *was* an ape.
Is this the one that BJ wanted to date ?
Now, I thought that evolutionary theory was such that a trait that was beneficial would always overpower, or at least remain neutral to, those traits that were detrimental, or otherwise of negligible benefit. So, even after 3 million years, one might expect that a trait for more powerful shoulders, would be more of a survival imperative than proportionally weaker ones. In point of fact, there are many characteristics of early hominid development that would increase survivability over what the human race has inherited.
She’s got some ‘splainin’ to do!
What a bunch of BS!
I spent half of my life before age fifteen in trees. Maybe I’m a throwback?
Exactly, Jack, what fun Satan has with this nonsense. He hates us so. To have serious men in serious robes discuss our ancestors swinging from trees. Such a mockery.
Apparently he didn't understand the point and ignored me. However, let me expand on it a bit ~ humans have finger nails. The hardness is controlled by genes. About half have hard nails. The other half have soft nails.
It's been that way for hundreds of thousands of years, and probably even millions of years ~ all the way back to the first dude to have fingernails,
Evolutionary theory always said this about that ~ the fingernail type most advantageous to the survival of the species is the type each individual should have.
In the case of important features ~ to wit: fingernails ~ that have 2 variations, and which persist through geologic time ~ the traditionalists would say "see, neither type has survival advantage so both survive". Yet, we can look back up the line to the forebears and some of them have claws ~ well, actually, at some point going back they all had claws, and all claws are hard ~ that's because claws need to be hard. Fingernails that replaced them obviously had more survival advantage so presumably they started off hard as well ~ then what? Well, another type with no clear advantage we can see, the soft ones, came into existence, and now we have some people with hard and some people with soft fingernails.
By now you've probably gotten to the question ~ how is it soft fingernails have an advantage over claws? Your friendly neighborhood bears would probably like to know that answer as well ~ did you know they can open doors using the knobs and levers? Their mothers teach them now to do that. They open your door; go in; raid your refrigerator; and close it.
They'll be back!
Bears have hard claws and can gut you in a NY sec. They can peel oranges if you let them.
So, why nails? Why soft nails?
Nothing like climbing a tree for pure pleasure.
There are a few rogue scientists out there who speculate that mankind has been around for up to a billion years.
Lucy is a joke, by a desperate professor, at the end of his tour and funding.
Parts found half a mile and depths apart, yet attributed to same critter, and WaLa! It’s transitional!
we have fingernails because they are easier to trim to enable us to keep them short so we can use tools with utmost dexterity. ever see a lady with 4 inch nails work? they are basically useless. its an evolving trait that the body uses to expel dead cells.
http://t2.gstatic.com/images?q=tbn:ANd9GcSl2_5zcqqdDNBiHqxZflUAHxP3EU5ApqPbKlMf6HxQDADAHrvn ~ MONKEY FINGERNAILS and then http://universalspectrum.org/forum/attachment.php?attachmentid=189&d=1336375640 Baby marmoset claws ~ world’s smallest monkey.
Is there something I'm missing in this story?
How long have humans been on the earth?
“Lucy”. Anyone know the circumstances of finding the bones called Lucy?
Agreed. The same can be said for being basically hairless. Also why do we have such a long adolescent period? Doesn’t make evolutionary sense.
And were some of those parts buried 30 feet deeper in the soil?
“How long have humans been on the earth?”
It appears from Scripture that God created man 6-8,000 years ago.
We don’t know how long Adam and Eve lived before they fell. It could have been a few hours or a few centuries. It doesn’t say.
However it is of great certainty that God did not create us from apes. We are made in His image. To say we are made from apes is to insult Him.
Almost nobody believes that this is anything but a monkey. I’m sorry but the partial skeleton is only a monkey and isn’t man’s early relative. That man evolved is clear, but this monkey is not proof of it. It’s simply proof that a vane old man wants glory for a spectacular find which really isn’t. The whole thing is silly.
As an archaeologist for 35 years, even I can’t explain it, but on several projects the most amazing stuff would show up on the last scheduled days. Had a few holidays interrupted that way, too, but didn’t even notice!
By the way, Dr, Johanson’s dating for the hominid were revised by the person who geologically determined the data himself, Dr. Timothy White. Say what you want about the conclusions relating to the data, but the field work was good and first rate.
I don’t recollect the circumstances for depth provenance of Lucy’s parts. Depth matters, of course, but the stratum (layer) the remains came out of is more important; items within a stratum can become mixed within that layer by water and wind as well as by other influences. Even though remains can be moved considerably by environmental means, the stratum they came from can be determined by the minerals that become part of the fossils. Items from varying geological strata are traceable to their original stratagraphic location.
Fossils like Lucy are in fact minerals which come from the strata they were deposited in. Fossilization starts after fifty years of weathering and continues until the remains become all mineral.
How Ethiopian scientist unearthed ‘world’s oldest child’
From Earl Nurse, CNN
updated 5:35 AM EDT, Fri May 31, 2013
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