Micro Puzzle Pieces From Wanakah Shale

[Acryzona]

Found these pieces awhile back from a sample of the Wanakah Shale near Bethany, NY. They remind me of crab but the Middle Devonian is too old for them. I have the irrational fear that I put my trowel through a complete trilobite while collecting the sample! I have more pieces but these seem to be representative in terms of surface ornamentation and shape. Any ideas?

Acryzona

P.S. The white squares in the photo are 3.5mm on edge

Edited February 3, 2013 by Acryzona

[Fossildude19]

Acryzona,

Neat finds.

They look arthropod-ish to me.

Perhaps Piranha or GerryK will weigh in on this one.

Regards,

[piranha]

They certainly look like trilo-bits (cephalic margin, genal spine, etc.) from an asteropyginid like Bellacartwrightia.

[Acryzona]

Thanks Piranha. I remember MikeyMig posted one recently. I'll take another look at it. As I go through the sample, I'll pick out the pieces I can find.