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Fossil or nah?


JurassicParkCarnotaurus

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I found this on a beach in Mackinac Island in upper Michigan on Lake Huron. Just wondering if it’s a fossil, and if so what? Thanks!

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I don’t know that area well but they look like fossils to me, perhaps little plant bits.

“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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The deposits there will be late Silurian to early Devonian.

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...How to Philosophize with a Hammer

 

 

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7 minutes ago, Kane said:

The deposits there will be late Silurian to early Devonian.

In this case, I revise my guess to worn burrows.

“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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Do they go all the way through the rock, or just on the surface?

Side shots?

 

Still hard to see detail. I am thinking crinoid or bryozoan bits. (but that is just a guess.)

Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

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Calcite pseudomorphs after rhomb-shaped gypsum / anhydrite in laminated mudstone.  (I would guess that the mudstone is either a upper intertidal carbonate mudstone or lacustrine siliciclastic mudstone.)

 

The formation of laminated mudstones with rhomb-shaped gypsum / anhydrite crystals that are later replaced by calcite often occurs in sabkha environments. 

 

sabhka - https://en.wikipedia.org/wiki/Sabkha

 

Yours,

 

Paul H.

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Mineral bits seems most likely.

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"Journey through a universe ablaze with changes" Phil Ochs

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