[Rockhounds] 0.76 meter-long Arthropleura fossil found on Northumberland beach

[Tim Fisher]

Don't quote me on this but I think it's the relationship between surface
area and mass. They "breathe" through their exoskeleton and air can only be
adsorbed at a fixed rate. So more O2 in the air = more O2 transferred into
the body tissues, which in turn supports a larger mass. 

Tim Fisher
Http://OreRockOn.com 
Email nospam at orerockon.com

-----Original Message-----
From: Rockhounds [mailto:rockhounds-bounces at rockhounds.drizzle.com] On
Behalf Of J Bryan Kramer
Sent: Saturday, January 01, 2022 6:31 AM
To: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
Subject: Re: [Rockhounds] 0.76 meter-long Arthropleura fossil found on
Northumberland beach

O2 increased to 35% in the Carboniferous which may explain the large size.
As I understand it arthropods size is limited by O2 transfer since they do
not have a lungs-heart system.

BK

““There exists a law…inborn of our hearts…by natural intuition. … If our
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and every method of protecting ourselves is morally right.””
Cicero

J Bryan Krämer       North Florida, USA
photos at: http://pbase.com/photoburner


On Fri, Dec 31, 2021 at 9:58 PM Paul <etchplain at att.net> wrote:

> Largest-ever millipede fossil found on Northumberland beach By Jonah 
> Fisher, BBC, December 21, 2021
> https://www.bbc.com/news/science-environment-59734747
>
> Scientists find fossil of largest arthropod to ever live, a car-size 
> millipede Harry Baker, Live Science, December 21, 2021 
> https://www.livescience.com/giant-ancient-millipedes-uk
>
> Giant millipede fossil discovered in England reveals 'the biggest bug 
> that ever lived' l ABC7, December 30, 2021 
> https://www.youtube.com/watch?v=Ku-PG-7yLic
>
> The open access paper is:
>
> Davies, N.S., Garwood, R.J., McMahon, W.J., Schneider, J.W. and 
> Shillito, A.P., 2021. The largest arthropod in Earth history: insights 
> from newly discovered Arthropleura remains (Serpukhovian Stainmore 
> Formation, Northumberland, England). Journal of the Geological 
> Society.
> Abstract:
> https://jgs.lyellcollection.org/content/early/2021/11/19/jgs2021-115
> PDF:
>
> https://jgs.lyellcollection.org/content/jgs/early/2021/11/19/jgs2021-1
> 15.full.pdf
>
> Yours,
>
> Paul H.
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