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Trilobite Cross Sections from Waldron Shale?


Huntonia

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I received some Waldron Shale trilos for prep today. As always I made a brief examination of the matrix in search of any other fossils. I came across these, that I think may be cross sections of bugs? I should clarify that I have 0 experience with such cross sections.

 

If they were, I'd assume the smaller one is the standard C. breviceps but the larger is curious. It's about 1.75 in/4.5 cm across and appears to have tubercles. 

 

What do you guys think, am I way off base or have I found something interesting?

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20201130_171247.thumb.jpg.7656c9aff6d0a1133dd14093b3fe62e4.jpg

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They look like cross sections of thoracic segments, to me. 

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    Tim    VETERAN SHALE SPLITTER

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2 minutes ago, Fossildude19 said:

They look like cross sections of thoracic segments, to me. 

That's what I was thinking, I'm not particularly knowledgeable concerning the Waldron Shale species, thus far I've never heard of a large bumpy bug from there.

Perhaps someone can point me towards a possible genus?

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The overall size compared with C. breviceps and the ratio of the tuberculate axis vs the pleural field leads to a reasonable expectation of: Glyptambon verrucosus

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image.png.a84de26dad44fb03836a743755df237c.png

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I had forgotten about Glyptambon :DOH:

Seems like a good match, thanks again. Unlikely there's enough continuing in the matrix to make it worth prepping, but I'll probably clean up what's visible. 

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