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Rosemary

I am wondering if this sample is a trilobite. The second pic contains an additional sample. Both taken from the same rock.

arthrpod.jpg

forID.jpg

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Tidgy's Dad

The top one indeed looks like a partial trilobite, part of the thorax and the pygidium. 

The second one looks like the impression of part of the cephalon. 

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Peat Burns

Hmmm.  Looking at the margins of the first item, am I seeing growth lines?  Made me think bivalve or brachiopod.

 

20190409_091716.jpg.8667457edbfd101d771d905e0e540955.jpg

 

Agree on the second item being trilobite.

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Fossildude19

It is best to take pictures from directly above the item, looking down at it. 

Oblique angles do not show correct detail, as it can be skewed by the angle.  ;) 

 

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Rosemary

How's this?

above.jpg

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Fossildude19

Excellent! :) 

This makes me think it is a bivalve/pelecypod. 

Looks more like a shell than trilobite, to me.  

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Kane

I wonder if it's possible that this is a rostroconch. 

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Tidgy's Dad

Oooooppps! 

Oh well, I was half right.:D

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DevonianDigger

+1 for the top piece being bivalve, the bottom piece is definitely a trilobite cephalon, maybe a Dalmanitidae from the Silurian? I really don't know the area, but it doesn't look like any of the Devonian trilobites from Indiana.

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Peat Burns

Looks like there is a Hederellid-type bryozoan on the mold of the trilobite cephalon!

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Rosemary

I was wondering what that pretty thing was! Thx.

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