Posted on 02/16/2005 11:01:16 AM PST by Alter Kaker
NEW YORK (AP) -- A new analysis of bones unearthed nearly 40 years ago in Ethiopia has pushed the fossil record of modern humans back to nearly 200,000 years ago -- perhaps close to the dawn of the species.
Researchers determined that the specimens are around 195,000 years old. Previously, the oldest known fossils of Homo sapiens were Ethiopian skulls dated to about 160,000 years ago.
Genetic studies estimate that Homo sapiens arose about 200,000 years ago, so the new research brings the fossil record more in line with that, said John Fleagle of Stony Brook University in New York, an author of the study.
The fossils were found in 1967 near the Omo River in southwestern Ethiopia. One location yielded Omo I, which includes part of a skull plus skeletal bones. Another site produced Omo II, which has more of a skull but no skeletal bones. Neither specimen has a complete face.
Although Omo II shows more primitive characteristics than Omo I, scientists called both specimens Homo sapiens and assigned a tentative age of 130,000 years.
Now, after visiting the discovery sites, analyzing their geology and testing rock samples with more modern dating techniques, Fleagle and colleagues report in Thursday's issue of the journal Nature that both specimens are 195,000 years old, give or take 5,000 years.
Fleagle said the more primitive traits of Omo II may mean the two specimens came from different but overlapping Homo sapiens populations, or that they just represent natural variation within a single population.
To find the age of the skulls, the researchers determined that volcanic rock lying just below the sediment that contained the fossils was about 196,000 years old. They then found evidence that the fossil-bearing sediment was deposited soon after that time.
Paul Renne, director of the Berkeley Geochronology Center, which specializes in dating rocks, said the researchers made "a reasonably good argument" to support their dating of the fossils.
"It's more likely than not," he said, calling the work "very exciting and important."
Rick Potts, director of the Human Origins Program at the Smithsonian Institution's National Museum of Natural History, said he considered the case for the new fossil ages "very strong." The work suggests that "we're right on the cusp of where the genetic evidence says the origin of modern humans ... should be," he said.
G. Philip Rightmire, a paleoanthropologist at Binghamton University in New York, said he believes the Omo fossils show Homo sapiens plus a more primitive ancestor. The find appears to represent the aftermath of the birth of Homo sapiens, when it was still living alongside its ancestral species, he said.
A testable prediction made by the Theory of Evolution.
Fine. So you're saying you have absolutely nothing in the way of a supporting argument constructed in the intervening 30 years?
Well, I was disappointed. When the headline said, "Oldest Remains of Modern Humans Are Identified by Scientists, I assumed that "identified" meant that a scientist had said, "Yep, that's Bobby Ray, alright!"
No gap. Lucy was an Australopithcine, and a fairly early on at that. Modern humans followed (and I believe overlap) archaic sapiens, and archaic sapiens followed (and I believe overlap) Homo erectus.
Do you have a visual link of the current status of the Homo ancestry?
Here's an article from 2000 that concludes the same thing.
Yes, the terms 'reasonably good argument', 'more likely than not' and 'estimate' make that clear.
Standard procedures of biostratigraphy are absolutely and completely independent of evolution. They would work just as well if a wizard replaced all the fossils with, say, coins bearing unique but arbitrary numeric codes for each species.
Besides, they were invented not by "the evolutionists" but by creationists. The proof? All of the major geologic systems (save only the Silurian) were in place before Darwin even started college. How could these methods be based, via circular reasoning, on evolution when they were invented by creationists and applied by creationist, all before any geologist at all was an evolutionist of any description?
Wow, if this is true then the site is the birth place of humanity! Discoveries don't get much more important then this. Wow again.
The lie has obviously gotten to you before the truth.
Haven't I heard somewhere that Ethiopia was the site of the Garden of Eden? From what I've seen, it doesn't too appetizing now.
Even granting that carbon dating is invalid (which I don't), that has absolutely zero relevance to this find. This find is a 200,000 year old fossil. Carbon dating is only used to date samples that are up to 50,000 years old. Therefore, carbon dating was not used to date this fossil. Hence any "problems" with carbon dating would have no effect on this find.
That's all very interesting, LightCrusader, but was Carbon 14 dating used in the study cited here?
Huh? And MessianicJews.net isn't prosletyzing? His own handle is a piece of advertising!
My question meant: Would you like to evidence the bald claim that biostratigraphic standards prove common descent independently, not circularly? Thanks.
Darwinism transformed "geologic systems" or zones into "geologic eras". Since you admit geologic zones are compatible with creation and design, they cannot prove evolution independently. The circularity is that common descent is assumed to prove itself, not a creationist import. Happy to explain further.
When you haven't a leg to stand on, state it like it's fact. Standard MO.
The carbon-dating method is the epitome of junk science.
http://www.answersingenesis.org/docs2002/carbon_dating.asp
AIG: The epitome of junk science. Even CSI is closer to the truth!
You mean like the YEC's do when they say evolution is junk science because the earth is only 6000 years old ...
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