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Confusing shell mold


Rockwood

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I think this is basically a Mucrospirifer mold but what else is there ? Primarily the rugose  feature. Pedicle attachment ? 

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Can not remember what they are called, but I think it is the interior supporting structure of the brachiopod.

First 2 pictures, do not know what 3 is.

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22 minutes ago, ynot said:

Can not remember what they are called, but I think it is the interior supporting structure of the brachiopod.

First 2 pictures, do not know what 3 is.

Looking for the word Lophophore?

I agree btw

3 is the outside of the shell

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Happy hunting,

Mason

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Just now, WhodamanHD said:

Looking for the word Lophophore?

Yep, that is it.

Thanks.

 

 

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1 hour ago, WhodamanHD said:

3 is the outside of the shell

It would have to be an over print. It's the same thing at a different angle.

That becomes problematic when you consider what I've been calling a sponge boring toward the top. It would almost have to be within the dissolved shell body space. Making this simply an internal mold. Wouldn't it ?

Most of the horn corals from the quarry are full of what ever the trace is.

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2 hours ago, WhodamanHD said:

Lophophore

Cool ! Are they a little bit rarely preserved as with the spirals ?

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Lophophore is the soft part, the spiral supporting structure is the brachidium. Not sure what you've got there though...

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Tarquin      image.png.b7b2dcb2ffdfe5c07423473150a7ac94.png  image.png.4828a96949a85749ee3c434f73975378.png  image.png.6354171cc9e762c1cfd2bf647445c36f.png  image.png.06d7471ec1c14daf7e161f6f50d5d717.png

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32 minutes ago, TqB said:

Lophophore is the soft part, the spiral supporting structure is the brachidium. Not sure what you've got there though...

Both thoughts have been troubling me. 

I should have included Tony's response. I think you have clarified where we were trying to get to.

Just how such a structure would end up looking this way in the mold I didn't make much progress with though.

I assumed it was a deficiency on my part. 

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1 hour ago, TqB said:

Not sure what you've got there though.

Could the reproductive stage of a rugose coral have settled in a vacant sponge bore ?

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