Moedred said:
You should see some of the peculiar folks I weigh in at the clinic. Ours is a diverse species. I've yet to see a convincing transitional fossil. Remember Homo floresiensis, the hobbit-like species? It appears to be what one might call a "child."
I'm not getting into this for many reasons, but maybe the almighty wikipedia can shed some light on it for you (in an extremely rudimentary and oversimplified sort of way):
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Misconceptions
It is commonly stated by critics of evolution that there are no known transitional fossils. This position is based on a misunderstanding of the nature of what represents a transitional feature. A common creationist argument is that no fossils are found with partially functional features. It is plausible, however, that a complex feature with one function can adapt a wholly different function through evolution. The precursor to, for example, a wing, might originally have only been meant for gliding, trapping flying prey, and/or mating display. Nowadays, wings can still have all of these functions, but they are also used in active flight.
Although transitional fossils elucidate the evolutionary transition of one life-form to another, they only exemplify snapshots of this process. Due to the special circumstances required for preservation of living beings, only a very small percentage of all life-forms that ever have existed can be expected to be discovered. Thus, the transition itself can only be illustrated and corroborated by transitional fossils, but it will never be known in detail. However, progressing research and discovery managed to fill in several gaps and continues to do so. Critics of evolution often cite this argument as being a convenient way to explain off the lack of 'snapshot' fossils that show crucial steps between species.
The theory of punctuated equilibrium developed by Stephen Jay Gould and Niles Eldredge is often mistakenly drawn into the discussion of transitional fossils. This theory, however, pertains only to well-documented transitions within taxa or between closely related taxa over a geologically short period of time. These transitions, usually traceable in the same geological outcrop, often show small jumps in morphology between periods of morphological stability. To explain these jumps, Gould and Eldredge envisaged comparatively long periods of genetic stability separated by periods of rapid evolution.
The 'Missing Link'
A popular term to designate transitional forms with is "the missing link". The term is especially used in the regular media, but inaccurate and confusing. This is partly because it implies that there was a single link missing to complete the picture, which now has been discovered. In reality, the continuing discovery of more and more transitional fossils is further adding to our knowledge of evolutionary transitions. The term probably arose in the 19th century where the awaited discovery of a "missing link" between humans and so-called "lower" animals was considered to be the final proof of evolution. The Australopithecus afarensis fossil (more commonly known as "Lucy") is seen as a key transitional fossil.
The discovery of Australopithecus africanus (Taung Child), Java Man, Homo erectus, Australopithecus afarensis (Lucy), Sinanthropus pekinensis (Peking Man), etc. are also vital to the study of links.
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Out of curiosity, how do any of you non-evolutionists explain away those last few chaps?