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Oldest "Human" Skeleton Found--Disproves "Missing Link"
Move over, Lucy. And kiss the missing link goodbye.
Scientists today announced the discovery of the oldest fossil skeleton of a human ancestor. The find reveals that our forebears underwent a previously unknown stage of evolution more than a million years before Lucy, the iconic early human ancestor specimen that walked the Earth 3.2 million years ago.
The fossil puts to rest the notion, popular since Darwin's time, that a chimpanzee-like missing link—resembling something between humans and today's apes—would eventually be found at the root of the human family tree. Indeed, the new evidence suggests that the study of chimpanzee anatomy and behavior—long used to infer the nature of the earliest human ancestors—is largely irrelevant to understanding our beginnings. news.nationalgeographic.com...
Oldest "Human" Skeleton Found--Disproves "Missing Link"
Scientists today announced the discovery of the oldest fossil skeleton of a human ancestor.
"This find is far more important than Lucy," said Alan Walker, a paleontologist from Pennsylvania State University who was not part of the research.
While important, however, none of those earlier fossils are nearly as revealing as the newly announced remains, which in addition to Ardi's partial skeleton include bones representing at least 36 other individuals
"All of a sudden you've got fingers and toes and arms and legs and heads and teeth,"
"That allows you to do something you can't do with isolated specimens," White said. "It allows you to do biology."
Ardipithecus's contains a special small bone inside a tendon, passed down from more primitive ancestors, that keeps the divergent toe more rigid.
The bone was lost in the lineages of chimps and gorillas.
As a result Ardi would have walked on her palms as she moved about in the trees—more like some primitive fossil apes than like chimps and gorillas.
As a result Ardi could have walked on her palms as she moved about in the trees—more like some primitive fossil apes probably could of done than like chimps and gorillas of today.
"What Ardi tells us is there was this vast intermediate stage in our evolution that nobody knew about," said Owen Lovejoy, an anatomist at Kent State University in Ohio, who analyzed Ardi's bones below the neck.
"It changes everything."
But it took 15 years before the research team could fully analyze and publish the skeleton
because the fossils were in such bad shape.
After Ardi died, her remains apparently were trampled down into mud by hippos and other passing herbivores. Millions of years later, erosion brought the badly crushed and distorted bones back to the surface.
The team also found some 6,000 animal fossils and other specimens that offer a picture of the world Ardi inhabited: a moist woodland very different from the region's current, parched landscape. In addition to antelope and monkey species associated with forests, the deposits contained forest-dwelling birds and seeds from fig and palm trees.
Males and female specimens are also close to each other in body size.
Lovejoy sees these changes as part of an epochal shift in social behavior: Instead of fighting for access to females, a male Ardipithecus would supply a "targeted female" and her offspring with gathered foods and gain her sexual loyalty in return.
To keep up his end of the deal, a male needed to have his hands free to carry home the food. Bipedalism may have been a poor way for Ardipithecus to get around, but through its contribution to the "sex for food" contract, it would have been an excellent way to bear more offspring. And in evolution, of course, more offspring is the name of the game
But this is just the beginning of the story
Originally posted by Solofront
But this is just the beginning of the story
...whatever, lol
Originally posted by JohnnyCanuck
Or are you afraid he's going to make a monkey of you?
Originally posted by Stari
Originally posted by JohnnyCanuck
Or are you afraid he's going to make a monkey of you?
Oh my goodness... that was a good one!!!
www.eurekalert.org...