BC 3500000 c.1: Difference between revisions
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<p>This extinct hominid (think Lucy), thought to be as close to <em>Homo sapiens </em>as any species then alive, lived in eastern Africa. Their hands weren't yet adapted to throwing, but their thumbs had evolved in that general direction.</p> | <p>This extinct hominid (think Lucy), thought to be as close to <em>Homo sapiens </em>as any species then alive, lived in eastern Africa. Their hands weren't yet adapted to throwing, but their thumbs had evolved in that general direction.</p> | ||
<p> </p> | <p> </p> | ||
|Sources=<p style=" | |Sources=<p align="LEFT">Richard W. Young, "Evolution of the human hand: the role of throwing and</p> | ||
<p align="LEFT">clubbing,"<span style="text-decoration: underline;">Journal of Anatomy</span> (2003), pp165–174. </p> | |||
<p><a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064</a></p> | <p><a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064</a></p> | ||
|Comment=<p>Four of our metacarpal bones are aligned in the back of our hands. This fifth is between our wrist and or thumb knuckle. </p> | |Comment=<p>Four of our metacarpal bones are aligned in the back of our hands. This fifth is between our wrist and or thumb knuckle. </p> | ||
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|Reviewed=Yes | |Reviewed=Yes | ||
|Has Supplemental Text=Yes | |Has Supplemental Text=Yes | ||
|Coordinates=1.957709, 37.2972044 | |||
}} | }} | ||
<p>This NIH paper continues, "by 3.2 | <p>This NIH paper continues, "by 3.2 million years ago. <em>Australopithecus aferensis</em> . . . "wrist extension comparable to humans would have aided throwing efficiency. A styloid process on the third metacarpal, appearing for the first time, would have protected against hyperextension from throwing, and the capacity to rotate the second and fifth metacarpals during flexion would have improved the throwing grip."</p> | ||
Latest revision as of 17:47, 9 May 2015
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| Prominent Milestones |
| Misc BB Firsts |
| Add a Misc BB First |
| About the Chronology |
| Tom Altherr Dedication |
| Add a Chronology Entry |
| Open Queries |
| Open Numbers |
| Most Aged |
The Thumb Comes into Play
| Salience | Noteworthy |
|---|---|
| Tags | |
| Location | |
| City/State/Country: | Eastern Africa |
| Modern Address | |
| Game | |
| Immediacy of Report | Retrospective |
| Age of Players | |
| Holiday | |
| Notables | |
| Text | Ever try to throw a ball, even a non-breaking pitch, without using your thumb? "The carpometacarpal joint of Australopithecus afarensis would have allowed he range of thumb movement necessary for both key grips used in baseball." This extinct hominid (think Lucy), thought to be as close to Homo sapiens as any species then alive, lived in eastern Africa. Their hands weren't yet adapted to throwing, but their thumbs had evolved in that general direction.
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| Sources | Richard W. Young, "Evolution of the human hand: the role of throwing and clubbing,"Journal of Anatomy (2003), pp165–174. |
| Warning | |
| Comment | Four of our metacarpal bones are aligned in the back of our hands. This fifth is between our wrist and or thumb knuckle. Edit with form to add a comment |
| Query | Edit with form to add a query |
| Source Image | [[Image:|left|thumb]] |
| External Number | |
| Submitted by | Joe Gray |
| Submission Note | Email of April 1, 2014 |
| Has Supplemental Text | Yes |
-3500000c.1 The Thumb Comes into Play"
Comments
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Supplemental Text
This NIH paper continues, "by 3.2 million years ago. Australopithecus aferensis . . . "wrist extension comparable to humans would have aided throwing efficiency. A styloid process on the third metacarpal, appearing for the first time, would have protected against hyperextension from throwing, and the capacity to rotate the second and fifth metacarpals during flexion would have improved the throwing grip."