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Carolina? Collection of Unknown Fossils, ID Needed


Alison.K.Monahan

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Here's my issue, I work in a science museum and our former director wasn't good at curating.  He often knew what things were on sight, but he didn't write down much for us.  I have a whole box of unknown fossils.  Since we have several specimens of this fossil type, they were likely collected in South or North Carolina.  We do have fossils and specimens from all over the world though, so it's not a guarantee.

 

So I don't know the location, I don't know anything about the geology, and I haven't been able to find similar fossils online visually.  

I have many pictures, struggling with the file size restraints.  I will post more pictures in the reply. 

Please ask for any details I may have.  

IMG_20181115_104509.thumb.jpg.8078a7b23667e3b9ddd44323313a4633.jpgIMG_20181115_103452.thumb.jpg.4bf5ebcdff575b4e026a75bdab677bbc.jpgIMG_20181115_110834.thumb.jpg.98aedda973359dcb8a4f000d66a0b140.jpg

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These appear to be bivalve steinkerns, which is the internal sediment that hardened inside the bivalve, which then weathered away, leaving an internal cast.

"Don't force it, just use a bigger hammer"

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Internal mold of a clam... TX folks should be able to say more.  They are common in TX Cretaceous, but the preservation is different. 

 

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These appear to be these steinkerns of Cucullaea sp. a, a false Ark Clam. From the Cretaceous PeeDee formation.

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They are sometimes colloquially called "deer heart clams" or "turtle heads"

I agree with Don - Cucullaea sp. 

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