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Fossil in chert?


StevenJD

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Possibly a sponge?   :unsure:  

Odd.   :headscratch:

 

Enlarged and cropped. 

 

RSCN1747.thumb.JPG.2e4dd6b016a5fd50b5165af66f8012ff.JPG

 

:shrug:

    Tim    VETERAN SHALE SPLITTER

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Probably, the original material of the fossil was almost totally dissolved. The white external structure might be crystalline silica (amorphous or chalcedonic).

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

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Is this the same locale/outcrop/formation as the plant material shown in the other post? 

Regards, Chris 

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The fossil sponges in flint nodules from Texas were compared many years ago (J. A. Merrill, 1895) with the sponges in flint from UK. Here are some specimens from the flint pebbles (history collection), for comparative reason.

 

MA_I287645_TePapa_Flint-Pebble-Polished_full.thumb.jpg.154b3500a33673ada920c6c5d019d649.jpgMA_I287646_TePapa_Flint-Pebble-Polished_full.thumb.jpg.5dd2ede3b87dc08a366e2274bf2da1c2.jpgsponges_UK_MA_I287647_TePapa_Flint-Pebble-Polished_full.thumb.jpg.4e5af5bf0ec59f1d5642c3f2eaaa4016.jpg

pictures courtesy of Museum Of New Zeeland

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

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