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Can this large gastropod be ID'd by aperture?


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Lone Hunter

This is the largest gastropod I've found and with intact aperture to boot. Is it larger version of the smaller ones?  Is that a turritella next to it? 

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Myrmica

1, 2, 4, 6, and 7 look to be moon snails, i.e., Naticids.

The ribs running in the same direction as the spire of the tall-spired shell in the last photo makes me think that it is not a Turritella.

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Wrangellian

I can't give you anything definite but I was thinking the same thing about the large one at the start - 'naticiform' at least.  Nice specimen, anyway!

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ClearLake

Have to agree with the others. May want to look at Gyroides as the genus of the large one. The high spired one in its aperture does not look like Turritella, but I do t have a good suggestion for that one based on looking through Akers and Akers, Texas Cretaceous Gastropods.  

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Lone Hunter

Appreciate the suggestions I will be looking in to both!  Sooo much to learn....

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Yep Gyrodes LINK.

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ClearLake

Thanks Mike for giving her the correct spelling, my mistake. Here is another link, although be aware there are many more species than the two shown here: Cretaceous Atlas

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Lone Hunter

Yep, Gyrodes Crenata, I think, just wish the other side was up!

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