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1.4 Million-year-old Fossil Human Bone Closes Evolution Gap </div>
Scientific Computing ^
| 12/16/2013 - 5:36pm
| University of Missouri-Columbia
Posted on 12/18/2013 10:11:55 AM PST by null and void
The styloid process allows the hand to lock into the wrist bones, giving humans the ability to apply greater amounts of pressure to the hand. This allows humans to make and use tools. Courtesy of University of Missouri
COLUMBIA, MO Humans have a distinctive hand anatomy that allows them to make and use tools. Apes and other nonhuman primates do not have these distinctive anatomical features in their hands, and the point in time at which these features first appeared in human evolution is unknown. Now, a University of Missouri researcher and her international team of colleagues have found a new hand bone from a human ancestor who roamed the earth in East Africa approximately 1.42 million years ago. They suspect the bone belonged to the early human species, Homo erectus. The discovery of this bone is the earliest evidence of a modern human-like hand, indicating that this anatomical feature existed more than half a million years earlier than previously known.
"This bone is the third metacarpal in the hand, which connects to the middle finger. It was discovered at the 'Kaitio' site in West Turkana, Kenya," said Carol Ward, professor of pathology and anatomical sciences at MU. The discovery was made by a West Turkana Paleo Project team, led by Ward's colleague and co-author Fredrick Manthi of the National Museums of Kenya. "What makes this bone so distinct is that the presence of a styloid process, or projection of bone, at the end that connects to the wrist. Until now, this styloid process has been found only in us, Neandertals and other archaic humans."
The styloid process helps the hand bone lock into the wrist bones, allowing for greater amounts of pressure to be applied to the wrist and hand from a grasping thumb and fingers. Ward and her colleagues note that a lack of the styloid process created challenges for apes and earlier humans when they attempted to make and use tools. This lack of a styloid process may have increased the chances of having arthritis earlier, Ward said.
The bone was found near sites where the earliest Acheulian tools have appeared. Acheulian tools are ancient, shaped stone tools that include stone hand axes more than 1.6 million years old. Being able to make such precise tools indicates that these early humans were almost certainly using their hands for many other complex tasks as well, Ward said.
"The styloid process reflects an increased dexterity that allowed early human species to use powerful yet precise grips when manipulating objects. This was something that their predecessors couldn't do as well due to the lack of this styloid process and its associated anatomy," Ward said. "With this discovery, we are closing the gap on the evolutionary history of the human hand. This may not be the first appearance of the modern human hand, but we believe that it is close to the origin, given that we do not see this anatomy in any human fossils older than 1.8 million years. Our specialized, dexterous hands have been with us for most of the evolutionary history of our genus, Homo. They are and have been for almost 1.5 million years fundamental to our survival."
TOPICS: Culture/Society; Miscellaneous
KEYWORDS: creation; evolution; gagdadbob; onecosmosblog
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To: Ha Ha Thats Very Logical
"There is no general agreement among advocates of intelligent design as to exactly where, when, or how design was manifested in the history of life." You'd think that with such overwhelming evidence, there'd be some modicum of agreement on those things. Why?
"Irreducible complexity" is indicative of intelligent design, but not timeframe or the particular intelligent agent, although most will posit God as the Designer.
OTOH, evolutionary theory cannot explain events like the Cambrian explosion. The fossil evidence overwhelmingly demonstrates stasis, rather than microevolution, contrary to Darwin's hypothesis. And advocates of macroevolution haven't proposed any plausible mechanism for major evolutionary leaps.
121
posted on
12/18/2013 3:02:42 PM PST
by
St_Thomas_Aquinas
( Isaiah 22:22, Matthew 16:19, Revelation 3:7)
To: PapaNew
the sheer tonnage of evidence for intelligent design
May you be the first to provide just a fraction of this tonnage? Riches and fame await.
the sheer lack of evidence for transference between animal groups
Hm. What Internet are you using that disallows you to find the evidence for this stuff? Anyway, are you specifically curious about a particular species and how it is related to another?
122
posted on
12/18/2013 3:07:37 PM PST
by
whattajoke
(Let's keep Conservatism real.)
To: PapaNew
Purpose evident in intelligent design is not disproved by your conclusion that the Designer is cruel because of your interpretation of certain circumstances.
But the designer designed my designed brain to think about stuff like that. Guess it's a design flaw. Do you have an issue with ID's top author and proponent admitting under oath that ID is no more scientifically valid than astrology?
123
posted on
12/18/2013 3:13:27 PM PST
by
whattajoke
(Let's keep Conservatism real.)
To: whattajoke
What you are missing this is what is being taught in the school system where you can’t pray or talk about creation but you talk about evolution and darwinism which is what is the base of the marxists and communists. It really doesn’t matter though, because the false sciences of evolution and global warming is being pumped into the skiulls of the masses without any recourse.
124
posted on
12/18/2013 3:26:12 PM PST
by
Busko
(The only thing that is certain is that nothing is certain.)
To: sickoflibs
I dont Apes can be toilet trained , can they?
The question is "Can apes learn to write a coherent sentence?"
125
posted on
12/18/2013 3:35:56 PM PST
by
donmeaker
(The lessons of Weimar will soon be relearned.)
To: tacticalogic
the credibility gap. Credibility, or credulity? I think, both...
126
posted on
12/18/2013 3:37:34 PM PST
by
PapaNew
To: Matchett-PI
No, atheists don’t need evolution to be true. The world could be the way it is by its own nature, without the intervention of an outside deity.
127
posted on
12/18/2013 3:37:50 PM PST
by
donmeaker
(The lessons of Weimar will soon be relearned.)
To: St_Thomas_Aquinas
"Irreducible complexity" is indicative of intelligent design, but not timeframe or the particular intelligent agent... Let's say for the moment that there is such a thing as irreducible complexity. If there's overwhelming evidence for ID, its proponents should be able to agree on at least a few systems that are irreducibly complex--the "where," if you will, that design was manifested. And with so much evidence to choose from, they should be able to hazard at least a guess at when in the history of life that irreducibly complex system appeared. Of course, by refusing to posit any such thing, they keep their "theory" unfalsifiable. I suspect that's really the point.
evolutionary theory cannot explain events like the Cambrian explosion.
Sure it can. "It wasn't until the Cambrian that there was a sufficient reduction in the number of oxygen-depleting bacteria to permit higher oxygen levels in the waters. This dissolved oxygen may have triggered the 'Cambrian Explosion' when most of the major groups of animals, especially those with hard shells, first appeared in the fossil record." Now, that may turn out to be incorrrect, but you can't say there's no explanation.
To: whattajoke
"LOL. I made the joke to Fuzz that you would say that and you actually did. LOL." And you actually think I'm going to waste my time laying out facts for a snot-nosed juvenile? You don't deserve the trouble. But I understand your frustration.
And did you really say "only five" fossil hoaxes? Did you really?
We'll note here that you were unable to offer any concrete arguments in support of your hoax, which is the theory that must be proven in the first place, not criticism OF it. You did manage the usual generic huffing and puffing of why it MUST be true, because...well, because! Don't give up, though. That missing link will come along at some point. How many have they found, already...?
*wink*
129
posted on
12/18/2013 3:52:27 PM PST
by
CatherineofAragon
((Support Christian white males----the architects of the jewel known as Western Civilization.))
To: Busko
What you are missing this is what is being taught in the school system where you cant pray or talk about creation but you talk about evolution and darwinism which is what is the base of the marxists and communists. It really doesnt matter though, because the false sciences of evolution and global warming is being pumped into the skiulls of the masses without any recourse.
Hm. I'm solidly positive anyone can pray in any school whenever they want. I'm certain millions of kids pray before and during tests every single day. What am I missing?
Evolution is the basis for the whole of biology which is simply the change in allele frequency over time. It has no political bent. Like anything, it can be misused and misconstrued - which has no bearing on the merit of the science. Hitler was a Catholic. Do I think Catholic doctrine calls for the extermination of Jews? No, I do not.
130
posted on
12/18/2013 3:56:09 PM PST
by
whattajoke
(Let's keep Conservatism real.)
To: CatherineofAragon
“That missing link will come along at some point. How many have they found, already...?”
There are a lot of things missing, links aren’t one of them.
131
posted on
12/18/2013 3:57:49 PM PST
by
Fuzz
To: PapaNew
Credibility gaps are susecptible to evidence, where credulity gaps may be immune.
To: whattajoke
An alleged “design flaw” does not disprove the existence of an Intelligent Designer.
133
posted on
12/18/2013 4:01:14 PM PST
by
PapaNew
To: CatherineofAragon
And you actually think I'm going to waste my time laying out facts
No, I don't. You've made that clear.
And did you really say "only five" fossil hoaxes? Did you really?
I did, yes. Why, are you aware of more? I'm not. I'll again ask you to enlighten me. Please provide your list of fossil hoaxes that were purposely used to support evolution. I've asked you for several simple things today and you've yet to provide one. Surprise me.
We'll note here that you were unable to offer any concrete arguments in support of your hoax
I've made several attempts to get you to name ANYTHING IN THE WORLD from your body hair to the squid's eye to marsupial pouches to bat "wings," to acorns - whatever you can imagine in the natural world - and we'd discuss the known pathways of its evolution. for some odd reason, you have yet to come up with a single thing. Anything. And I'M the one being difficult here?
which is the theory that must be proven in the first place, not criticism OF it.
Theories don't get proven. Theories don't "Grow up" to be anything more. Regardless, yes, the burden of proof is absolutely unequivocally on science to provide evidence for evolution. Yes. You are right. In case you've missed it, what specifically would you like evidence for? Warm-bloodedness? Flight? Four chamber hearts? Baleen? Malaria? Anything you'd like.
That missing link will come along at some point. How many have they found, already
?
several dozen. Which of course in creationist-land means there are now double the missing links. Fun game.
134
posted on
12/18/2013 4:10:08 PM PST
by
whattajoke
(Let's keep Conservatism real.)
To: PapaNew
An alleged design flaw does not disprove the existence of an Intelligent Designer.
Well, yeah. I cannot prove a negative. It is up to the ID crowd to provide evidence for this designer. Showing so-called design doesn't do that.
Alleged "design flaws" (via evolution, not cosmological circumstance I;ve cited) or design wonders can universally be explained by the various components within the theory of evolution. Therein lies the pickle for the ID crowd. Until they come up with better explanations of such things, they aren't getting too far. Especially when it all boils down to two things: "I can't wrap my head around that process" and "God - errr - Designer Thing did it."
135
posted on
12/18/2013 4:14:36 PM PST
by
whattajoke
(Let's keep Conservatism real.)
To: Fuzz
"If further analysis somehow proves its the femur of an opossum or something, then that will also be published and discussed." .........eventually. Like maybe in 40 years. How long did it take the leading lights of the "scientific community" to understand that Piltdown was an obvious very crude fraud? A generation and a half? They wanted to believe, so therefore they did believe.
136
posted on
12/18/2013 4:23:27 PM PST
by
cookcounty
(IRS = Internal Revenge Service.)
To: whattajoke
Proof of ID is design is everywhere. I've already been over how you can't get past your own body for massive evidence of design intelligence and purpose. Design that shows purpose is clear and convincing evidence of an Intelligent Designer.
Fundamental and centrally relevant evidence of Darwinist evolution is transference from one major animal group to another. There is no such evidence.
CASE CLOSED.
137
posted on
12/18/2013 4:24:36 PM PST
by
PapaNew
To: PapaNew
CASE CLOSED.
And in caps, too. No arguing that.
And I've argued that I can quite easily "get past my own body" and explain and provide evidence for its evolution. Every single part. (The various parts of the brains, I'll admit, still need to be beefed up). So where does that lead us. I've offered to provide evidence to both you and the other woman (who is not an ID'er but rather a YECer). Name a part of your body. Be specific. Pretty please?
how would you design a curriculum around, "Look at your body! It's incredible! God did it! CASE CLOSED."
What a boring world that would be. In science, my friend, the case is never closed. And that's the point.
138
posted on
12/18/2013 4:34:22 PM PST
by
whattajoke
(Let's keep Conservatism real.)
To: Fuzz
"The city planner who made me put my entertainment center right next to the sewage treatment plant. Perhaps your Wally's lack of a sniffer is evidence of Intelligent Design.
139
posted on
12/18/2013 4:37:14 PM PST
by
cookcounty
(IRS = Internal Revenge Service.)
To: cookcounty
“How long did it take the leading lights of the “scientific community” to understand that Piltdown was an obvious very crude fraud?”
And yet it was uncovered. The authenticity of Piltdown was questioned from early on as an unexplained aberration. As better techniques for testing and a tremendous amount of additional data, they were then able to prove it was a hoax.
To insinuate that this find is a hoax and by extension evolutionary theory by bringing up a proven hoax makes no logical sense. How many virgin Mary apparition hoaxes would it take to disprove Christianity?
140
posted on
12/18/2013 4:41:44 PM PST
by
Fuzz
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