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Chief1701

bivalve that looks like a "toe"?

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Chief1701

Hi, All.

 

I don't have a clue what these are, but I'm guessing a bivalve of some kind?  They came from the desert sand near Agadez, Niger, but that's all I know.  The street merchant I got them from thought they were dino toes, but I'm guessing not....  The thing that confuses me the most (other than the fact that I haven't been able to find any pictures of bivalves that look like this) is that it doesn't look like the "shell" would actually close like a clam or mussel.  Any and all help in identifying these would be most appreciated!

 

Rob

toes.JPG

toe1.jpg

toe2.jpg

Toe3.JPG

toe4.JPG

toe5.JPG

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daves64

Heart cockle?

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Chief1701

I don't think so....  At least, not in the pictures I can find on Google.  Thanks for the suggestion, though!

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minnbuckeye

Definitely a bivalve steinkern. I posted this yesterday to answer another form member's question under the topic "Please help ID Lower Ordovician fossil".  The internal mold of a bivalve can look so strange at times.

 

fossils-fig-7

 

.  

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Plax

bivalve steinkern

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fossilnut

Search Cucullaea on this forum for pictures that I believe match your 4th and 5th pictures. Common name is heart cockle-deer heart and in Myrtle Beach SC they call them turtle heads. Agreed it is a bivalve steinkern Especially see 'I found this today..." by Ssherrick on 8/28/18

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Chief1701

I have been having no luck finding the Ssherrick on 8/28/18.  I probably am not searching correctly....  Could you help me out with a link or page number?  Thank you!

Rob

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Ludwigia
2 hours ago, Chief1701 said:

I have been having no luck finding the Ssherrick on 8/28/18.  I probably am not searching correctly....  Could you help me out with a link or page number?  Thank you!

Rob

 

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Fossildude19

These have been called Deer Heart clams, and Turtle Heads. 

Colloquial names for these types of steinkerns. 

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sixgill pete

Cucullaea steinkerns. It is sediment that hardens inside of the shell then the shell dissolves away. The steinkern takes the shape of the INSIDE of the bivalve. Very common in many areas of the world.

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Chief1701

Thank you all for the great information!  Another thing I'm learning is that not all of the same type of fossil are going to look the same....  Soooo glad I stumbled upon this website!

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