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Robert Randell




Hi there,

Pretty sure this isn't preserved in flint in the Chalk sense.  Gastropods do occasionally get preserved in flint, but as with ammonites and nautiloids, the ocean chemistry of the Chalk sea caused their aragonitic shells to be preseved in a mouldic fashion only, so the flint forms an internal or external mould.  The presence of shell here suggests this is not sourced from Late Cretaceous chalk-associated flint. 

Here is an image of Chalk and flint gastropods for comparison:

Gastropods.JPG 

Robert


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fusilier21
Hi, Folks.
Found last time I was down on the island, and lost in my backpack until today.

Cheers,
Andrew

DSCN4267.JPG 

DSCN4268.JPG 

DSCN4269.JPG 

 
Je passe quand meme
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Richard
Nice gastropod Andrew.

Are you sure that it is preserved in flint? 
Richard
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fusilier21
Hi, Richard.
Reasonably so. I've found a couple of echinoids made out of the same stuff.

Plus with it being derived, I can't think what else it could be.

Andrew
Je passe quand meme
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ThomasM
Lovely gastropod, haven't seen one preserved in flint before.

Thomas

If you don't look, you won't find.
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spider
Andrew, Very nice gastropod. Found it twice Thumbs Up
Have a nice day :0)
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hooken
Hi Andrew could be greensand chert- could equally be flint. Nice find- well done!
 

H
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fusilier21
Cheers, guys.
Andrew
Je passe quand meme
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cabby
Nice find Andrew,well done.
          Cheers Cabby
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Naze Dave
Nice one, cant remember seeing any other flint gastropods.
Thanks
Dave
Still Life
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