| FORUM | ARCHIVE |                    | TOTAL QUIZ RESULT |


  New Posts New Posts RSS Feed - The sizes of modern human versus earlier hominids
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


Welcome stranger, click here to read about some of the great benefits of registering for a free account with us and joining us in our global online community.


The sizes of modern human versus earlier hominids

 Post Reply Post Reply
Author
literaryClarity View Drop Down
Colonel
Colonel
Avatar

Joined: 02 May 2014
Location: Texas
Status: Offline
Points: 698
Post Options Post Options   Thanks (0) Thanks(0)   Quote literaryClarity Quote  Post ReplyReply Direct Link To This Post Topic: The sizes of modern human versus earlier hominids
    Posted: 21 Sep 2014 at 22:29
To begin I have heard that Homo Erectus had reached heights of up to 6 feet or more.  Actually it was a chart which illustrated different hominid forms on the same page with a height ladder in cm.  In any case their brain size was significantly smaller than the average human being roughly 2/3 of the proportion.

In the evolution of man we've always been taught that what drove humankind's development was the need for a larger brain and this in turn was successfully progressed through the gradually increased ability to hunt to acquire more and more quantities of protein.  So hominids with the ability to hunt better along with bigger brains and bodies reproduced more and so on and so forth.  It was a progression towards larger brains better to plan and control larger bodies.

And therefore hominds in the past were typically imagined to be closer to the ape with smaller than human bodies and smaller than human brains.  This was overturned by the introduction of Neanderthal as it basically had a larger than average human sized head on a shorter than human sized body.  The Neanderthal was thought to be more muscular and the extra body mass required such a larger brain for motor control.  Another revealing case was Cro Magnon whose body was larger than modern man but whose larger head size remained in proportion.  Cro Magnon was not as strong as Neanderthal and didn't require extra brain for motor control situations.

Going back to the point about brain mass, the usual thinking was that earlier hominids had smaller than average brain size and shorter than average height.  But if that were the case Homo Erectus should be another kind of oddity just like Neanderthal or Cro Magnon.  Homo Erectus's body was lengthy and had hunting gathering features.  At the least it would have been able to travel far distances.  Homo Erectus type remains have been found throughout the world, unlike the Neanderthal.  Its brain size could only match its body if it had a profoundly skinny physique which would have made it incapable of hunting the way Neanderthal did.



The taller fellow may be Homo Heidelbergensis but I'm pretty sure Homo Erectus was another one of the taller early hominids.


Edited by literaryClarity - 22 Sep 2014 at 01:00
http://hwyst.hangzhou.com.cn/wmyzh/content/2013-10/09/content_4920423.htm
Back to Top
Sponsored Links


Back to Top
pinguin View Drop Down
WorldHistoria Master
WorldHistoria Master
Avatar

Joined: 29 Sep 2006
Status: Offline
Points: 15238
Post Options Post Options   Thanks (0) Thanks(0)   Quote pinguin Quote  Post ReplyReply Direct Link To This Post Posted: 22 Sep 2014 at 00:48
Actually, subsaharan Africans of today had the brain smaller than the rest of humans, and with the population boom in Africa I expect the average brain size of human beings will continue shrinking.


A point of view from the antipodes
Back to Top
literaryClarity View Drop Down
Colonel
Colonel
Avatar

Joined: 02 May 2014
Location: Texas
Status: Offline
Points: 698
Post Options Post Options   Thanks (0) Thanks(0)   Quote literaryClarity Quote  Post ReplyReply Direct Link To This Post Posted: 22 Sep 2014 at 01:08
Human brains have been shrinking since Roman times.  There was a discovery that average Roman empire citizen's brain size was larger than the inhabitants now living in Europe and hunter gatherers brains were larger.
http://news.bioscholar.com/2011/06/modern-humans-have-smaller-brains-than-their-hunter-gatherer-forebears.html

Many Africans in Subsaharan Africa should be in hunter gatherer type situations.  They should have larger brains if that were the case.  However Africans specifically share the unusual feature that they don't contain admixtures with the earlier hominids.  This is very peculiar.  Perhaps early modern humans out of Africa were a docile breed of bipedal organism traveling in packs and had intermixed with Neanderthal.  Neanderthal was probably the hominid modern humans encountered and mated with most often.  Perhaps Neanderthal is our link to bigger brains?

Are Africans the most modern human?  If their population explosion is another baby boom to humankind would that inevitably eliminate what Neanderthal and Denisovan admixtures human populations have left?


Edited by literaryClarity - 22 Sep 2014 at 01:19
http://hwyst.hangzhou.com.cn/wmyzh/content/2013-10/09/content_4920423.htm
Back to Top
pinguin View Drop Down
WorldHistoria Master
WorldHistoria Master
Avatar

Joined: 29 Sep 2006
Status: Offline
Points: 15238
Post Options Post Options   Thanks (0) Thanks(0)   Quote pinguin Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2014 at 02:03
I doubt Africans are the more "modern" or the superior race as that term suggest, but as Aldous Huxley points out in his "Brave New World", Africans reproduce at a higher rate than the rest. So, theirs genes will predominate in the world population just a few centuries from now. At least there is a factor that changes that tendency, as an environmental disaster, massive spread of birth control in Africa, something else that change the fertility rate or the mass production of babies by design.
A point of view from the antipodes
Back to Top
literaryClarity View Drop Down
Colonel
Colonel
Avatar

Joined: 02 May 2014
Location: Texas
Status: Offline
Points: 698
Post Options Post Options   Thanks (0) Thanks(0)   Quote literaryClarity Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2014 at 07:07
Out of Africans have already dominated the planet.  That's why they are called modern humans.
http://hwyst.hangzhou.com.cn/wmyzh/content/2013-10/09/content_4920423.htm
Back to Top
fantasus View Drop Down
Arch Duke
Arch Duke
Avatar

Joined: 07 May 2009
Location: Denmark
Status: Offline
Points: 1943
Post Options Post Options   Thanks (0) Thanks(0)   Quote fantasus Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2014 at 08:23
Originally posted by pinguin pinguin wrote:

I doubt Africans are the more "modern" or the superior race as that term suggest, but as Aldous Huxley points out in his "Brave New World", Africans reproduce at a higher rate than the rest. So, theirs genes will predominate in the world population just a few centuries from now. At least there is a factor that changes that tendency, as an environmental disaster, massive spread of birth control in Africa, something else that change the fertility rate or the mass production of babies by design.
That is of course true - if one assumption holds: that current trends will continue that far into the future. But then if we learn anything from history it is that trends change. 
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.063 seconds.