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#51
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They (all known species examples prior Homo) probably represent about 10% of what actually existed back then, as yet we have barely scratched the surface, thankyou. Secondly, taxonomical considerations mean that what you might think is or isnt Homo is still debatable, this of course applies to me to. |
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#52
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you could say that about any taxon.
The hominid line is actually fairly well represented for such a short time frame and area. Thank you. If you want to lump the Australopithicines in with Homo that is up to you... but I will keep Homo as it has been designated. What do you consider 'not Homo' so I know what to discuss. wa:do
__________________
mispellers of the world 'untie'! ![]() wa:do Cherokee for 'thank you'
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#53
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Namely the crazy theories of Neotenic evolution and Xenomorphic interference, or are they? Last edited by Tau; 05-07-2008 at 05:44 PM. |
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#54
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yeah, those are some pretty crazy theories...
generally not discussed because the evidence is, shall we we say "sketchy" at best. You also don't hear Aquatic Ape Theory bandied about in serious discussions of human origins for the same reason. wa:do
__________________
mispellers of the world 'untie'! ![]() wa:do Cherokee for 'thank you'
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#55
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For the latter theory, there we go into very uncertain territory indeed. Shinka: Tau for see ya later ![]() |
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#56
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Neoteny is not the whole answer, though some neoteny is possible and often discussed.
Neoteny being the retention of juvenile features into adulthood. Again it isn't the whole answer to any evolutionary question, just one of several meccanisms. wa:do
__________________
mispellers of the world 'untie'! ![]() wa:do Cherokee for 'thank you'
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#57
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Neotenic? Babe, new-born, fresh. Exactly how does that work in evolution?
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#58
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Neoteny is the retention of juvenile features into adulthood. This is seen in several species such as salamanders who never loose their gills and is key to all animal domestication.
There is some discussion as to how much, if any, neoteny is shown in the human population. wa:do
__________________
mispellers of the world 'untie'! ![]() wa:do Cherokee for 'thank you'
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#59
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but didn't a cro-magnon teen look like himself as he grew to adulthood?
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#60
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yes but a cro-magnon adult looks more like a Homo erectus juvenile.
![]() A human infant is not a lot like a human adult... a chimp infant is less like a chimp adult. This is called allometry and is the change in proportions of an individual over their lifetime. A chimp infant is remarkably more like a human in general appearance than an adult chimp. wa:do
__________________
mispellers of the world 'untie'! ![]() wa:do Cherokee for 'thank you'
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