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

[Timothy Blackwood]

Actually, insects do have hearts. But oxygen enters their bodies through openings in the sides of their bodies...and that oxygen enters the "blood" by diffusion.

Tim


Timothy J. Blackwood
E-mail: Tim_Blackwood1 at hotmail.com<mailto:Tim_Blackwood1 at hotmail.com>
Phone: (218) 999-0603
Home Address:
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Cohasset, Minnesota, USA 55721

________________________________
From: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> on behalf of J Bryan Kramer <codeburner at gmail.com>
Sent: Saturday, January 1, 2022 8:30 AM
To: Rockhounds at drizzle.com: A mailing list for rock and gem collectors <rockhounds at rockhounds.drizzle.com>
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
lives are endangered by plots or violence or armed robbers or enemies, any
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/jgs2021-115.full.pdf
>
> Yours,
>
> Paul H.
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