You guys really have to stop spreading these myths of non-function....
The coccyx... is an important attachment for various muscles, tendons and ligaments—which makes it necessary for physicians and patients to pay special attention to these attachments when considering surgical removal of the coccyx. Additionally, it is also a part of the weight-bearing tripod structure which acts as a support for a sitting person. When a person sits leaning forward, the ischial tuberosities and inferior rami of the ischium take most of the weight, but as the sitting person leans backward, more weight is transferred to the coccyx.
http://en.wikipedia.org/wiki/Coccyx
There's a pretty simple answer to this. Mammal anatomy was well studied long before evolution theory. If mammals had shown a pattern of bird-like traits, such as a stage of feather development, then mammals would have been "nested" closer to birds in the evolutionary narrative of the emerging theory. Your "nested hierarchy" could have been arranged many different ways to fit with the data.
It's one more illusion in the evolutionists' smoke and mirror magic show...
A coccyx is so useful, so essential, this poster claims, and perhaps he exaggerates the need for a coccyx. One clue to the fact that its importance is exaggerated . . . . not one animal with a true tail ever has one. Monkeys, lions, tigers, turtles, whatever . . . if they have a tail, they have no coccyx, they manage without one for all its alleged importance in attaching muscles, tendons and whatever.
Consider the elephant trunk. Often more than a yard long, if ever a need for support within were there, the trunk would have it. But the trunk does quite well without a bone inside for support. Humans could do without a coccyx at least as well. And if it is used somewhat for those things, the fact remains it is clearly a remnant of an actual tail. The shape betrays it.
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