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USAFMedic:
Just because a species doesn't change over a given period of time (be it several generations or several hundred) doesn't mean it was especially well adapted for anything....it implies that it was not under any pressure to change, e.g. there was nothing else competing for a given food source, etc. Actually your very suggestion that this homonoid animal is the direct descendant of an early hominid (note the different terms!) is an issue of what basically amounts to "devolution"- basically a lineage pulling a cladistic 180 turn and going backwards in terms of development. Not even the arrival of a more advanced hominid on the block is likely to have stimulated such a drastic change.
The fact that it didn't change means it had no evolutionary pressure. I think it is safe to assume that indicates that it is well adapted to its environment. His point is that it is you that are assuming a chimp is less advanced based on your preconceived notions.
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BTW, changes in hominid evolution tended to take place through succession of species rather than change within a given animal.....although there are some remarkable "intermediate" specimens of H. neandertalis and early H. sapiens from Europe and the Middle East. The succession tended to wipe out the less "brainy" apes. That is what I meant- that evolutionary forces in hominids tend to select brains over brawn.
Not quite sure what you mean here. Just so you know, my brother is very knowledgeable in the theories of evolution. Evolution always tends to select only those who are best able to reproduce. A large brain is very expensive in terms of diet and calories. If the animal doesn't need the larger brain, I think it would tend to devolve as you put it. I think that shows your prejudice. Nature doesn't care who has the biggest brain unless there is an advantage that outweighs the expense. I would agree with your statement though that hominids tend to select brains over brawn.
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The following basic problems exist in the Homo erectus theory (and these are just the ones I can think of off the top of my head at midnight):
1. Lack of a metatarsal joint as described by Krantz, Meldrum, et al.
2. Ankle is in the wrong position in a H. erectus to produce the tracks found (and if you look at human legs and feet compared to those of early hominids you will see little difference in design (other than size differences)- nature has a tendency not to screw with things that are working well.
3. A 500+ lb difference in size between the largest H. erectus and the smallest described adult BF.
http://www.bigfootforums.com/index.php?sho...ndpost&p=149357Please, take a look at the recent thread my brother posted on the feet. I think it answers all these questions. You seem awfully willing to discount the possible growth in Homo erectus. How do you account for the great difference in size between a pigmy and a Samoan? I don't know if it is a decedent of Homo erectus, but you are giving me very little evidence it isn't.
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"Meganthropus" is a shaky subspecies at best and most likely represents the result of someone who wanted to get their name in print. The person who described it is what is referred to as a "splitter" in cladistics circles due to the tendency to want to split species apart based on any slight difference. It is likely simply a representation simply of larger individuals within a given species. It would be like stating that my friends Myron and Tyshon can't be human simply because they are both 6'6" and 280+ lbs. If you were to look at their skeletons next to mine (5'10" 150 lbs) and didn't know any better or were so inclined (such as you wanted to make a name for yourself in the field of paleoanthropology) you would likely think they were a subspecies of humans rather than what they actually are: Two VERY big black guys.
I don't know the evidence for the existence of Meganthropus. Krantz describe it as being very large in his recreation. He is after all the only reason that people think BF is Giganto? There must be something to Meganthropus.
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There is no evidence to support your contention that the "common ancestor" of chimps and man was strictly bipedal (at least not to my knowledge- as my areas of interest in paleontology are multituberculate mammals and marine reptiles). The reason I suggested the orang family is that the animal is problem in a more primitive group (primitive in the sense only that it has been around longer than our own) is that there is no fossil evidence to support the belief that this animal is a member of the genus Homo. There is a little (and I will admit all of it will fit into a shoe box) fossil evidence to suggest that there was an upright bipedal primate that generally matches the description of sasquatch. I'm siding with the option that at least has a little evidence.
http://www.bigfootforums.com/index.php?sho...ndpost&p=138354This post describes new evidence of an upright ancestor of chimps.
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We are each entitled to our opinions; I am not saying that for 100% you are wrong, just trying to point out weak points in your case so that you can be better prepared to defend it if possible against more aggressive personalities. Time will tell which of us are correct. I will buy you a beer if you are right. What do you say?
I think your assumption of being unprepared is in error.