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Cruisaire

Tiny worm casts or teeth

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Cruisaire

My last inquiry, as found in clay stone/mudstone @ Savannah River

14906D2B-51C0-4932-9BC1-FD116F8792FD.jpeg

D7814BFE-1A86-4A84-91E0-A2AC9321C767.jpeg

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sharkdoctor

Interesting! They look like caddisfly larval cases that have been coated in biofilm from the river. About the right size, too:

Image result for caddisfly larvae

https://bugguide.net/node/view/1055316/bgimage

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Cruisaire

Brilliant Sharkdoctor! Although I observed them insitu with the clay stone, they must be more recent and likely not as old as perceived. 

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Rockwood
7 minutes ago, Cruisaire said:

Brilliant Sharkdoctor! Although I observed them insitu with the clay stone, they must be more recent and likely not as old as perceived. 

I'm pretty sure this form of construction started in the early Paleozoic.

I recently collected something similar to it from the Devonian. Haven't gotten around to posting it for confirmation though.

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Cruisaire

Good information, thank you!

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Cruisaire

There are a few tiny silk fibers inside. Thanks for the call Sharkdoctor!

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