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Author Topic:   New Species of Homo Discovered: Homo naledi
NosyNed
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Posts: 9003
From: Canada
Joined: 04-04-2003


Message 107 of 163 (768667)
09-12-2015 9:34 PM
Reply to: Message 106 by Dr Adequate
09-12-2015 9:15 PM


Thumb length
What it seems you are trying to do is gauge the length of the thumb by looking at a photograph...
No, worse than that I think. She is looking at her own hand and not realizing that about half the thumb length is buried in flesh and muscle.

This message is a reply to:
 Message 106 by Dr Adequate, posted 09-12-2015 9:15 PM Dr Adequate has not replied

Replies to this message:
 Message 108 by Faith, posted 09-12-2015 9:37 PM NosyNed has replied

  
NosyNed
Member
Posts: 9003
From: Canada
Joined: 04-04-2003


Message 111 of 163 (768673)
09-12-2015 9:40 PM
Reply to: Message 108 by Faith
09-12-2015 9:37 PM


Re: Thumb length
Faith writes:
The skeleton shows no difference in the length of the thumb from the fingers. My own hand shows a large difference. I have a much shorter thumb relative to my fingers than the one belonging to the skeleton has.
How odd, my thumb it very close to exactly the same length as my longest finger.
(I'd show it to you but admin might spank me)

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 Message 108 by Faith, posted 09-12-2015 9:37 PM Faith has replied

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 Message 112 by Faith, posted 09-12-2015 10:30 PM NosyNed has replied

  
NosyNed
Member
Posts: 9003
From: Canada
Joined: 04-04-2003


Message 117 of 163 (768781)
09-13-2015 11:27 PM
Reply to: Message 112 by Faith
09-12-2015 10:30 PM


Re: Thumb length
So as I understand it we have some difference of opinion about thumb lengths, right?
You suggest your thumb is much shorter than your fingers. Anatomists say human thumbs are long. When I measure my thumb and fingers I find my thumb to be long.
There is a difference and your answer is: "Yeah, I knew you couldn't tell one from another." It sounds like you don't like where this is going.
So where are we? Are human thumbs long compared to other primates or not? How long is your thumb compared to your longest finger?

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 Message 112 by Faith, posted 09-12-2015 10:30 PM Faith has not replied

  
NosyNed
Member
Posts: 9003
From: Canada
Joined: 04-04-2003


Message 120 of 163 (768818)
09-14-2015 10:30 AM
Reply to: Message 118 by Meddle
09-14-2015 8:05 AM


So that's the difference
I am not counting the palm as part of the "finger" length. That is incorrect then? And then my thumb if very short compared to my fingers as Faith says. But thumbs are still long in humans compared to other primates?

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Replies to this message:
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NosyNed
Member
Posts: 9003
From: Canada
Joined: 04-04-2003


Message 122 of 163 (768825)
09-14-2015 11:10 AM
Reply to: Message 121 by jar
09-14-2015 10:32 AM


Re: So that's the difference
If you count an equal number of joints from the tip of a digit what lengths are found?
Well, if I start at the tip of each digit and stop at the 3rd joint (the top of the palm for fingers and the wrist for the thumb) then my thumb is close in length to my middle finger. I wasn't counting the bones of the palm which I guess Faith is so we legitimately end up with different answers both of which are right but depend on how you define "finger".
I don't know what the correct anatomical definition is.

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Replies to this message:
 Message 123 by RAZD, posted 09-14-2015 12:39 PM NosyNed has not replied

  
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