Paleonet: Unknown fossils and some help?

Mario Cournoyer paleovision at
Wed Jul 26 17:53:26 UTC 2023

Hello Russel!

You should post those pics on any geological period Facebook group pages, like “The Devonian Period”, etc. You would be surprised to see how many good people there are there. 

I’m stumped for the three pics, but very intriguing! Second might be a crinoid arm but the preservation don’t look like typical Hamilton Grp of Ontario (yes it’s Middle Devonian).

Mario Cournoyer

> On Jul 26, 2023, at 11:59 AM, Russell Bicknell <rdcbicknell at> wrote:
> Hi PaleoNet People!
> So I have been having a look through the AMNH collection and came across three fossils that have very limited metadata but look really interesting. I was hoping someone out there might be able to help!
> The first is from Costa Rica, age known
> The second is from the Hamilton Group, ??Devonian
> The third is from the Clinton Shale, Silurian.
> Any help would be greatly appreciated, and may lead to some interesting collaborations! 
> Cheers!
> Russell Bicknell.
> <3 fossils.pdf>_______________________________________________
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