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Ordovician in Tennessee (Help!)

Terri

Sepia elegans
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Dec 20, 2009
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961
I knew the "tips and tricks" were somewhere, I couldn't find it. Thanks for the link! I may have to wait until morning but I'll give it a shot!
 

DWhatley

Kraken
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Sep 4, 2006
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20,971
Actually, I only posted it last night for the new forum :oops: so you are off the hook.

I found Kevin's "smokin" blog and will get with Tony after his vacation to have him convert it to an article but I think you are looking for a different one. If you could give me some key words, I may at least be able to find it to pass on to Tony.
 

Terri

Sepia elegans
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Dec 20, 2009
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961
Your right D it's a different one, I cannot seem to remember the title but maybe: "The Morphology of Fossil Cephalopods." :oops: I referred to that a lot!! Kevin will know, this one was in the "Articles" section.
 

Architeuthoceras

Architeuthis
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Nov 19, 2002
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2,441
Looks like Gonioceras again, or a weathered orthocone... either way it is a weathered phragmocone, at least that's what it looks like in the plan view. The end view shows the septal neck very plainly, round and a little darker(?) than the septa in end view. This view shows well where the siphuncle would have penetrated the septa. :smile: The portion of a brachiopod shell just to the right of the round septal neck shows that the upper(?) part of the phragmocone was weathered or eroded away prior to fossilization or diagenisis.

A pdf of Fossil Shell Morphology Or The Terminology used in the Description of Externally Shelled Cephalopods (Nautiloids and Ammonoids) is attached. It should have the TONMO logo on it somewhere to be legit, and it is not formatted very well, so I will probably delete it from this thread in a day or two.
 

Attachments

Terri

Sepia elegans
Registered
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Dec 20, 2009
Messages
961
Cool! Thanks Kevin, yes the septal neck is round and darker. The Gonioceras must have hung out together in that section of the quarry, same little area where the other bits and pieces of Gonioceras were found.:cool2:

I've got to get back out there soon my rocks are very quickly becoming buried by very yucky, sticky red clay.
 

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