| Science Forum Index » Anthropology Forum » wrist bones are flat in modern humans whereas crested... |
|
Page 1 of 1 |
|
| Author |
Message |
| ... |
 Posted: Wed Jun 03, 2009 9:02 pm |
|
|
|
Guest
|
This week on NOVA returned to the show on the human knucklewalkers
or the case of people who walk on fours. I had seen it before,
but it seems as though NOVA keeps improving some programs with
new information.
In this show they spoke of the wrist joint being flat in modern
humans but having crests in prehumans and in apes.
It spoke of Australopithecus and Lucy of 3 million years ago
as having crests on their wrist joint.
Now this is important for Stonethrowing theory in that this theory
posits that nearly all the changes from an apelike creature to that
of modern humans that the vast majority of the changes were
due to Stonethrowing.
Now why does modern day humans have a flat wrist joint? For
what possible reason in our morphology changes from apelike
creatures 10 million years ago all the way down to us today?
The changes for a flat wrist is to improve Stone throwing. You
can improve the throwing of rocks and stones by that extra
freedom of joint movement.
So does this tell us that Australopithecus and Lucy were not
stonethrowers? Not exactly because although they still had
crests on their wrist joint, the crests are not as pronounced
as on chimpanzees.
Now it would be intriguing to get a Neanderthal wrist joint
bone and see how much of a crest outline exists versus
the Cro Magnon contemporary rival of the Neanderal.
And recently there were bones found of the Hobbit man of Homo
floriensis found off an island of
Indonesia. And I wonder how the crest profile of the wrist
joint is for the Hobbit man??
Archimedes Plutonium
www.iw.net/~a_plutonium
whole entire Universe is just one big atom
where dots of the electron-dot-cloud are galaxies |
|
|
| Back to top |
|
|
|
|
