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Interesting fossil. Egg?


MattIowa

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Hello,

 

I know this is most likely not an egg but I had to see what someone else thought.  This was found in Jackson Co. Iowa which is on the eastern boundary of Iowa.  It was in a dry creek bed below an old limestone quarry.  The quarry has not been in operation for a long (unknown) amount of time. We find many interesting rocks here after heavy rains that I do not see normally in other parts of our county or Eastern Iowa.

 

This one is about 6cm in length and about 97 grams. any thoughts?

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Am not seeing any eggshell which would indicate it is not an egg, sorry. Would recommend reading this if you have not already:

 

 

 

 

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I agree with the others. Too many layers (outer thin increasing to thick inside), may indicate nodule / concretion of silicate material. What's inside may be a sponge, but it's just a guess. :)

Welcome to the Forum, BTW!

" 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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