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#11 | ||||||||||||
Spell I bought is work'n
Join Date: Jun 2007
Posts: 4,095
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Re: Stupid Creationist!
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Rachael I'm disappointed in you. I have already provided basic information on who mitochondrial Eve is. You want me to expand upon Eve, yet you send me to just fucking google it.com telling me to Do my own homework. Quote:
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The analysis of Ardipithecus ramidus (it means "root of the ground ape"), reported in the journal Science, changes the notion that humans and chimps, our closest genetic cousins, both trace their lineage to a creature that was more like today's chimp. Rather, the research suggests that their common ancestor was a walking forest forager more cooperative in nature than the competitive, aggressive chimp and that chimps were an evolutionary offshoot of this creature. So that could mean that while humans didn't diverge much from their evolutionary ancestors, "chimps and gorillas look like really special evolutionary outcomes," says Science study author Owen Lovejoy of Ohio's Kent State University. Quote:
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"Six months ago, we would have said our common ancestor looked something like a chimp," said Tim White of the University of California at Berkeley, a senior researcher on the project. "Now all that has changed." Although chimpanzees remain our closest living primate relatives, there is now no evidence that Homo sapiens somehow evolved from chimpanzee-like individuals, losing chimp characteristics over time. So when you go from head to toe, you're seeing a mosaic creature that is neither chimpanzee, nor is it human. It is Ardipithecus,' said Dr White. Quote:
It is simply a fossil of an Ardipithecus. The team's reconstruction of the 4-foot-tall skeleton and of Ardi's environment — Ardi was found in alongside crumbling fossils of 29 species of birds and 20 species of small mammals - a woodland replete with owls, parrots, shrews, bats, mice, monkeys, bears, rhinos, antelope everything from fig trees and snails to elephants and porcupines. Quote:
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Extinction is the end of an organism or group of taxa. Extinction, though, is usually a natural phenomenon; it is estimated that 99.9% of all species that have ever lived are now extinct. It is statistally more likely that Ardipithecus is another animal in the long line of extict creatures. Between 1500 and 2006 CE, 784 extinctions have been documented by the International Union for Conservation of Nature and Natural Resources. However, since most extinctions go undocumented, scientists estimate that during the 20th century, between 20,000 and two million species actually became extinct. Quote:
the older A. kadabba is "known only from teeth and bits and pieces of skeletal bones", and is dated to approximately 5.6 million years ago. It has been described as a "probable chronospecies" (i.e. ancestor) of A. ramidus. Although originally considered a subspecies of A. ramidus, in 2004 anthropologists Yohannes Haile-Selassie, Gen Suwa, and Tim D. White published an article elevating A. kadabba to species level on the basis of newly-discovered teeth from Ethiopia. These teeth show "primitive morphology and wear pattern" which demonstrate that A. kadabba is a distinct species from A. ramidus. Quote:
"We screwed up so we need more time". Sure the evidence proved what we held true about the ”chimpanzee last common ancestor,” six months ago was complete hogwash. But we're sure gawd... Um I mean CLCA exists. Chimpanzees are looking more and more irrelevant to interpreting early hominins. - John Hawks paleoanthropologist. Last edited by genderhazard; 10-06-2009 at 06:17 PM. |
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