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Fossil Identification

Part of Trilobite Pygidium or ??

Oohlala   03-09-2019 om 02:32

Junior Lid
Lid sinds: 03-09-2019
Berichten: 3

I found this while hunting for agates in a quarry in the Driftless region in Wisconsin along the Iowa border. I was thrilled to discover a tiny fossilized leaf but on closer inspection (and other input), I don't believe this to be a leaf.
Please note that there appear to be pores and there is an appearance of something faintly looking like a tail or stem at the bottom of the close-up picture.
I attached the final picture not knowing if other fossil object remnants or not, and if these could give further clues.
Any assistance on identification would be appreciated. Thanks!

Masterofearth   03-09-2019 om 10:55

Senior Lid
Lid sinds: 13-10-2015
Berichten: 438

I cannot help on an identification but YES this is part of a Trilobite pygidium. Nice find! The marks on the back do not look like anything I know.



Oohlala   04-09-2019 om 03:33

Junior Lid
Lid sinds: 03-09-2019
Berichten: 3

Thanks a lot, Pim! I honestly don't know what characteristics make this so, as I am a newbie, but I really appreciate your assistance! I plan to learn a bit more about this.

hubertus68   04-09-2019 om 06:30

Senior Lid
Lid sinds: 12-11-2012
Berichten: 2599

Couldn't this be an imprint of some sort of bivalve too?
Do you know something about the stratigraphic origin of the piece?

Best wishes,

Oohlala   04-09-2019 om 12:56

Junior Lid
Lid sinds: 03-09-2019
Berichten: 3

Hi. It was discovered in a dirty rock pile in a quarry while looking for agates. Sorry. so the region is all I know.

Frederik   10-09-2019 om 10:27

Lid sinds: 28-09-2003
Berichten: 8635

Without a doubt, this is an imprint of a trilobite tail section. The 'pores' are tubercle imprints. Without stratigraphic context, it is very difficult to ID this specimen.

Try to learn something about everything and everything about
something (TH Huxley)