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Big Fasa

By Big Fasa
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FossilDAWG Regular Member

FossilDAWG

Posted
Posted

These fossils are molds of crinoid stems.  This kind of preservation (where the actual fossils are dissolved away, leaving molds in the encasing dolomite) is typical of the Silurian rocks exposed in the general Chicago area and elsewhere in Illinois and adjacent states and up into southern Ontario.

 

Oh, and welcome to the Fossil Forum.

 

Don

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Fossildude19 Regular Member

Fossildude19

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Posted

Welcome to the Forum. :)

 

I agree with Don.  Neat looking piece. 

Crinoid stem molds

 

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

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"In every walk with nature one receives far more than he seeks."
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RickNC Regular Member

RickNC

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That reminds me of a similar specimen I found when I was a kid. I carried it around for quite awhile and remember telling people it was a wasp bone! This was in west central Illinois. Funny to think about that now. 

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Max-fossils Regular Member

Max-fossils

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On 6/24/2017 at 0:15 AM, FossilDAWG said:

I'm happy no-one has suggested dinosaur skull yet. :wacko:

 

Don

Haha, indeed if you look at it with an untrained eye it does look like some weird reptile/dino/oreodont skull :P

Max Derème

 

"I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day."

   - Mary Anning >< Remarkable Creatures, Tracy Chevalier

 

Instagram: @world_of_fossils

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