The Analysis of Ardipithecus ramidus -- One of the Earliest Known Hominids
Vložit
- čas přidán 6. 09. 2024
- More than a million-years older than "Lucy," Ardipithecus ramidus and the associated fossils provide the most detailed snapshot of early hominid life. This video features interviews with Project Co-Director Tim White (University of California, Berkeley), Science correspondent Ann Gibbons, and paleoanthropologist Andrew Hill (Yale University). Produced by Robert Frederick and Michael Torrice.
Science (www.sciencemag.org) is the world's leading journal of original scientific research, global news, and commentary. For more original videos, check out the Science Video Portal (video.sciencemag.org).
Great video. And thanks to Science magazine for making the 11 Ardipithecus research papers freely available. I just finished reading them - really magnificent work.
Reading this in 2021, because I’m curious to know the true scientific explanation behind human evolution. Thanks 👍🏽
awesome! got to see the faces of all the authors I've been citing for the past week!
I wonder why this isn’t more popular.
Food scarcity seems the likely driver. The mechanism may have been more sophisticated use of sticks and stones along with increasing defensive collaboration.
yes..it seems most unlikely that ardy is a direct ancestor...the probability that we would discover any direct ancestral line is quite low indeed considering how few and sparse fossils are...so we can call Ardy a great great cousin!
@McTaggStar No one is arguing that all life is not made up of the same type of chemicals we all have DNA, but that doesn't mean that protozoa evolved into man. If we are going to consider common ancestry, then the alternative should be common design. The problem is that everyone repeats the same talking points but no one can provide any concrete examples. I asked the same of Francisco Ayala and Russell Doolittle when they made these kinds of claims, and they could not back it up either.
@jolsteiner Yes, I know. I grew up in a fundamentalist home / church / school. I had to teach myself how evolution works. This video is part of my education.
Thanks to Willow Smith, I'm curious of this
@Marquis Vegan I'm late but her that's her album's name
Yes that is a common misunderstanding - there isn't a "goal" or any way of measuring organisms in the present as being "more" or "less evolved" that another. But people presume this sort of thing constantly, in a lack of systemic understanding.
@McTaggStar cont..... single nucleotide polymorphisms[19] (changes of single DNA “letters” in the genome). Another type of difference, called indels (insertions/deletions) account for another ~3 % difference between the alignable sequences.[19] In addition, variation in copy number of large segments (> 20 kb) of similar DNA sequence provides a further 2.7% difference between the two species.[20] Hence the total similarity of the genomes could be as low as about 70%.
@McTaggStar The draft sequence of the common chimpanzee genome published in the summer 2005 showed the regions that are similar enough to be aligned with one another account for 2400 million of the human genome’s 3164.7 million bases[19] - that is, 75.8% of the genome. This 75.8% of the human genome......
@AtheistOnTheEdge
That is probably true, humans also have an incredibly high density of sweat glands, those of us in incredible shape would be able to do "Persistence hunting" running long distances to tire out prey. Apparently a few tribes still hunt this way, and our ancestors most likely did.
a pity these comments are so old.
I have a (bizarre?) view that nowadays humans, homo sapiens sapiens, must rather be subspecies-hybrids and that some of us do have Ardipithecus ancestors, while others don't. Some recoupled with other genetical cousins, or 'remaining pure lines' of an ancient species; as e.g. known in the case of sapiens & neandertalis, and it mixed again and in the end we are all subspecies-mixes actually. But not all have the same recent ancestor-combos.
I further do believe that such details still show in some cellular memory or genetical programm rests, or metabolic and even mental-psy responses, as well as other settings or capacities.
Which can also explain the tribes you mention, especially if greater mono-civilizing didn't influence endemic developments like nowadays.
So while you say "OUR ancestors" -many meaning by this that our common ancestor is of younger generation (1-2mio yrs) -
I am not quite sure that disregarding hybridization factors is a successful approach in science.
I do believe that timelines in human evolution history are paramount and genetical pool might show different lines, we just don't know how to group it.
@OriginalYTName OH YEAH! it's freaking awesome! I LOOVE IT! it's my life =D
Is it going to be Bio Anthro with Archaeology? If so, that's definitely it!
@McTaggStar I cited papers that had abstract easy enough to understand. You can read them if you wish or ignore them.
Where can I find them
Yeah, nearly impossible to tell without looking at the DNA. I think the important thing is that these fossils show us an evolutionary snapshot- what direction evolution was headed, in a general sense. I suppose that's the only sense we need. Until we can explore ancestral DNA more thoroughly, fossils may be the best glimpses we get.
@McTaggStar Epigenetics: A Challenge for Genetics, Evolution, and Development?
GERTRUDIS Van de VIJVER, LINDA Van SPEYBROECK, DANI de WAELE
Article first published online: 24 JAN 2006
Imagine us getting dug up in a million years and studied.
inserted into theory of evolution by scientific peer review.. peer review is very unforgiving...there is a study to create the model on the CG and the study itself trough scientific investigation, study and again trough scientific peer review before the modeling method takes into account...I hope you know now that there are many many steps trough the process before claiming their finding to public....:)
"peer review", i.e. paid off by interests groups
Awesome! Very thorough explanation, and paints the picture of how life was for Ardi.
Go to the museum and learn something. The evidence is there and more is found all of the time. Go to the laboratories where evolution is being observed in real time.
@McTaggStar The Changing Concept of Epigenetics
EVA JABLONKA, MARION J. LAMB
Article first published online: 24 JAN 2006
It's also quite possible that Ardi was a small branch, too, just a species, not a direct ancestor. They don't mention this much. Most people envision a straight line of ancestry.
@lubermanl Yes, of course, "Persistence hunitng." Have you noticed this is how wolves also hunt? Most feline predators rely on surprise then a sudden attack and quick kill. But wolves and African wild dogs wear down their prey over long didstance. And humans used to hunt the same way; I wonder if we learned it from the wolves, or maybe they learned it from us.
How about NEITHER....how about GOD created us all
evolutionary convergence , also a possibility. But yes, homo has a distinct ability - to observe and copy behaviour to an extent no other species is capable of. We learn from our flora and fauna. And there are lots of hunting behaviours that copy felines, too, as well as snakes and so on.
why did we think the hominins lived in a Sahara?
Because they have found them there.
@McTaggStar cont.... but concerning molecular evidence, this seems to be the mantra, and concerning especially fossil evidence, which is an embarrassment to to neo darwinism synthesis which is considered the modern synthesis.
Cross species phylogenetic tree building is highly problematic, and yes the gene centered view is obsolete. Epigenetics is the new game in town.
Theories are are just like oppinions everyones got one
@McTaggStar The burden is not on me to disprove it in fact you have yet to make a case for it being ancestral. Again they say this all the time. Why aren't you a little skeptical?
Onde é q eu to?
@OriginalYTName OH YEAH! it's freaking awesome! I LOOVE IT! it's my life =D
@McTaggStar Thats funny I asked question before I read your response "almost identical" fair enough.
Isn't it a complete stretch to claim it's a human ancestor? It could certainly be a transitional species, but could have just as easily been a dead ender/extinct species. We will never know whether it successfully contributed to the modern gene pool or whether it was like almost all life forms and just went kaput. Not to detract from it's importance, but something entirely else my have been an actual human ancestor.
I firmly believe in the < hybrids/ subspecies mix>. I believe in genetic pool combos, still showing markers, but we do not know how to group them. Meaning, among homo sap sap, there are multiple hybrids (or rather:mixes) with not the same recent ancestor, the last common ancestor is to be set much further back in time than currently suggested.
@McTaggStar Esteban Sarmiento refutes these claims in a published article in Science. It seems at least some are backpedaling on this.
They should backpedal.
Oh youtube comments, you never change. PJSalt Kappa PJSalt
Anyone else here because of ancestors the human odyssey?
@McTaggStar "almost identical" ????
cool
@McTaggStar "A. ramidus absolutely IS related to modern humans"
Give me a detailed explanation of how you know this is not just an extinct ape?. First it was Nebraska man.Then Piltdown man. Then everyone said we really found it this time and it was Lucy. None of them are no longer considered ancestral to man, even though they were absolutely sure. The latest to fall from Grace was IDA which was supposed to be the find of the century and turned out to be a dud. Please excuse my skepticism.
Compare its pelvic morphology, foramen magnum position and angle of femur joint with other apes and human. See for yourself where they fall. It will fall inbetween humans and apes. Its bipedal ape.
Lucy and ida is legit
Nebraska and piltdown were fraud which was exposed by evolutionist themselves which only shows their honesty
Ardi, Lucy, Little foot, Sediba, Naledi, floresencis, turkana boy, Heidelbergensis, Jebrel irhoud, skul5, cromagnon.
Know your ancestors boy.
shes like a gibbon!
@McTaggStar "1) Human beings are apes. 2) I don't claim ardi is ancestral to humans, just related. Chimps are related, but not ancestral. etc
Again this is a default position. Just labeling something or saying its related is not evidence. If a neo Darwinian classification is set up by neo Darwinist, is it any wonder why we would be called apes. What makes you think we are related to apes and chimps? meaning related on an evolutionary scale? is it our genes etc.?
Our genetics, anatomy and behaviour shows we are ape.
heard it before
Imagine if the modern myth of Big Foot was true, and it was an undiscovered hominid with big feet, but only 4 foot high and living deep in the woods...🤣
there was a discovery on Flores (homo floresiensis)... an area where ancient and recent stories and legends of the people in the region about "weird little men" are regarded from a different angle since. Some stories of 'the last ones of'em' might have been historical sightings of last descendants of this "cousin" species of ours.
Tim White's ego is oozing out of the computer screen
It was a hominid, it walks, it's just the right age. No one knows...but we do definitly, we evolved on earth. So it's a reasonable assumption.
@McTaggStar
cont..... and central dogmas of evolutionary biology. Some even criticize the Dover trial and their own colleagues for asking lay people to believe things that are simply not true as well as all the hand waiving that goes on.
If your more interested in the new proposed extended synthesis you should watch my video entitled "Will the real theory of Evolution Please Stand up" Let me ask you what do you think the differential is between human and chimp DNA?
@McTaggStar Sorry to repeat myself, but what the hey.
My thoughts on what caused the human foot to change - walking. The abilty to walk great distances became a selective criteria. Look how far early hominids travelled; all the way from Africa to South America. Look how far that is!
Now.....lets talk about Jesus!
Ardipithecus is Jesus's Grand father
15 people have no clue how evolution works.
@McTaggStar cont... The amount of failed predictions is higher than most people will admit. I do not deny evolution as defined by change over time, adaptation, variation and natural selection has its place, but macro evolution prokaryote to man evolution is filled with unproven extrapolations and educated guesses. Even for those who accept the prokaryote to man narrative such as evo devos, even they are calling for an extended synthesis while challenging the limitations
Chronology of fossil record and transitional fosdil shows we evolved.
LCA was not a chimpanzee - it just looked a lot like one.
@McTaggStar So anyone who is critical of a theory is a quack? Did they teach you that you should not be critical of a theory if is too popular? Critical thinking is one of the foundations of modern sciences. Any theory that cannot be intelligently defended is not worth its salt.
@McTaggStar Instead of getting emotional go to Wikipedia and see for yourself it is sourced. I bloged about this before Wiki did. Every one reads the 98% comparison but they stop there and do not read the rest. So far you offer no proof. Tell me what do you think is the best evidence for this theory that you yourself are not happy with. Please tell me. In reality all your dong is telling me there is validity among genetics and fossil evidence. How do you explain the Cambrian radiation event?
So they found some bones in Ethiopia which is obviously a primate. Then those bones are inserted into the theory of evolution, complete with renders of a hominid walking upright, even though no bones of the spine were found at the site. Science has now become commercialized with scientists competing with one another to find the oldest bones and make inferences, as is manifested in fancy CG renders, to subjectively create another link in the human evolutionary path.
You don't really need to spine to determine if something is bipedal or not. It's about where the foreman magnum lies within the skull. You can also tell based on the shape of the femur and the shape and certain characteristics of the pelvic bone.
Compare its pelvic morphology, foramen magnum position and angle of femur joint with other apes and human. See for yourself where they fall. It will fall inbetween humans and apes. Its bipedal ape.
There is no way of knowing that this was part of the human family and has to be assumed. This is called wishful thinking. A fairytale for adults.
Comparitive anatomy with humans and other apes. Check which one they are close to