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Part of Trilobite Pygidium or ??

Geplaatst: 03 sep 2019, 03:32
door Oohlala
Afbeelding

Afbeelding

Afbeelding

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!

Re: Part of Trilobite Pygidium or ??

Geplaatst: 03 sep 2019, 11:55
door Masterofearth
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.

Cheers,

Pim

Re: Part of Trilobite Pygidium or ??

Geplaatst: 04 sep 2019, 04:33
door Oohlala
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. :)

Re: Part of Trilobite Pygidium or ??

Geplaatst: 04 sep 2019, 07:30
door hubertus68
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,
Oliver

Re: Part of Trilobite Pygidium or ??

Geplaatst: 04 sep 2019, 13:56
door Oohlala
Hi. It was discovered in a dirty rock pile in a quarry while looking for agates. Sorry. so the region is all I know.

Re: Part of Trilobite Pygidium or ??

Geplaatst: 10 sep 2019, 11:27
door Frederik
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.