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Unknown, at least by me


Herb

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posting this for a friend. Found in Charlotte, TN. Middle of state. Could be Ord, Sil, Dev, but my guess would be Silurian from the color of the matrix. Any ideas, it's got me stumped. LOOKS LIKE THE AGE IS MISSISSIPPIAN

27540455_10213474507450073_6438052970803896900_n.jpg

27750237_10213474510970161_9043384939717348435_n.jpg

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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Bivalve of some sort I reckon.

“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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Maybe something like Wilkingia

    Tim    -  VETERAN SHALE SPLITTER

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4 hours ago, Bullsnake said:

@Herb

Do you have access to Index Fossils of North America?

I think I recall seeing something like that.

Thats a lot of pages to flip through

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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7 hours ago, Fossildude19 said:

Maybe something like Wilkingia

seems too irregular to me to be Wilkingia, I dont think there is any Miss. in the area but I will double check, thx

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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5 minutes ago, Herb said:

Thats a lot of pages to flip through

Indeed!

I had a look when I got home. Conocardium is what I recalled seeing. 

Steve

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Looks like the age is Mississippian.

Here is a Wilkingia sp of mine, does look mighty similar. Maybe opened back on itself?

P-125--Wilkingia.jpg

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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Way off of everyone's thoughts, but @Herb, isn't there a cephalopod that is flattened and wavy that has a surface looking very similar to this? Again, a long shot.

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My problem with gastropod operculum is that it looks like both halves of a bivalve, articulated, but opened, and lying next to each other.  

 

 

27750237_10213474510970161_9043384939717348435_n.jpg.e9da8cd5af65ada6fbbab0bc30dd3205.jpg

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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31 minutes ago, Fossildude19 said:

My problem with gastropod operculum is that it looks like both halves of a bivalve, articulated, but opened, and lying next to each other.  

 

 

It was actually suggested to be a pair of opercula. The specimen with better preservation is shown for easier comparison.

Matching opened valves seems unlikely as the one on the right shows the horn-shape curving in the opposite direction.

 

 

image.png.a84de26dad44fb03836a743755df237c.png

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1 hour ago, piranha said:

A colleague has suggested gastropod operculum.  The diagram scale from IFNA is 10 cm length.

 

IMG.jpg.4a958e4c3e93891613d8e60d200ec765.jpg

 

35 minutes ago, piranha said:

 

 

It was actually suggested to be a pair of opercula. The specimen with better preservation is shown for easier comparison.

Matching opened valves seems unlikely as the one on the right shows the horn-shape curving in the opposite direction.

 

 

now that is an interesting possibility

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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Minibuckeye, there is such a cephalopod (Gonioceras).  However, it would not be paired like this specimen, and the "camerae" on the specimen are too irregular in width to be actual nautiloid chambers.

 

Don

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Does the so-called 'pairing' match any known morphology or is it merely coincidental?  Here is another image from TFF-FB:

 

IMG.jpg.32b4d433c6af476cb389ace525d0a918.jpg

image.png.a84de26dad44fb03836a743755df237c.png

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Ammonites and such have aptychuses (aptychae?aptychi?) which may be operculums. Not sure if that’s relevant.

“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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