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Location: UFOUpDatesList.Com > 2007 > Jul > Jul 31

Re: Binary/Convergent Evolution

From: Bob Shell <bob.nul>
Date: Tue, 31 Jul 2007 08:56:10 -0400
Archived: Tue, 31 Jul 2007 09:41:52 -0400
Subject: Re: Binary/Convergent Evolution


>From: Michael Tarbell <mtarbell.nul>
>To: ufoupdates.nul
>Date: Thu, 26 Jul 2007 11:21:01 -0600
>Subject: Re: Binary/Convergent Evolution

>I hope this comment will not will not associate me with the
>'hidden terrestrial race' idea, but I don't know that it has
>been established that the "bipedal human evolved from the
>requirements of a tree-dwelling animal that needed to adapt to
>the wide open spaces of the African savannah". There are a
>variety of well-established animals in the savannah that show no
>hint of evolving toward bipedalism over the timescale in which
>human ancestors did so. If there is selection pressure for
>bipedalism in the savannah, why are we the only example of it?

This is a very good point.

Probably bipedalism already existed before our ancestors came
out of the trees (if they ever were there). The advantage of
bipedalism is that it frees the hands and arms to do other
things than provide locomotion. On a tree dweller, it increases
versatility, but the majority of tree dwellers are still
quadrupeds. So it does not appear that there is strong
environmental pressure to evolve bipedalism in tree dwellers.
This big chunk of human evolution, the change to bipedalism and
the forces that drove it, is very murky.

Dinosaurs may have had a "leg up" in evolution because the
therapods were bipedal from the beginning. Their hands and arms
were free for grasping and manipulating food, and for climbing
if they were arboreal (although no definitively arboreal
dinosaur has been found). I personally think that the key to all
of this is the combination of bipedal stance, well-developed
arms and hands, and stereoscopic vision. Toward the end of their
existence, some dinosaurs had all three, and it is no surprise
that they had the largest proportional brains of all dinosaurs.
If their evolution had not been cut short by the mass extinction
at the end of the Cretaceous, they would almost certainly have
continued to evolve larger and larger brains, better hand
coordination andbetter stereoscopic vision. Proper balance for a
really big brain would necessitate a more erect stance, and that
would lead to the tail diminishing in size or vanishing
altogether.

You end up with Russell's Dinosauroid.

We really still don't know what killed off the dinosaurs, and
until we do we can't really understand why some things lived
through that extinction. Birds, fish, crocodilians, lizards,
insects, small mammals, crustaceans,spiders, and many other
groups of animals survived. I think the real question is not why
did certain animals die out, but rather why did so many survive.
This is the main weakness in the asteroid impact theory. If
birds, which we now know are dinosaurs, survived, why not some
other lines of dinosaurs? Why not dinosauroid evolution?


Bob Shell

Listen to 'Strange Days... Indeed' - The PodCast

See:

http://www.virtuallystrange.net/ufo/sdi/program/


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