Any ideas

[Kody1992]

[Kane]

It may be an orthocone nautiloid, but please provide us with location information of where it was found.

[Kody1992]

Springfield, Illinois 

[Fossildude19]

Welcome to the Forum.  

 

+1 for orthocone cephalopod. 

[Kody1992]

It really doesn't look like the picks of those the local archeologists said tully monster but no picks match

[jpc]

Orthocone cephalopod sounds good to me.  Certainly not a Tully monster.  Archaeologists or paleontologists?  

[Kody1992]

Archeologists 

[izak_]

Tully monster??? 

I agree with nautiloid. 

[Kody1992]

I found some under name Dawsonoceras is that a orthocone 

[izak_]

8 minutes ago, Kody1992 said:

I found some under name Dawsonoceras is that a orthocone 

yes, but its hard to get the exact genus without knowing what formation its from(?). 

[FossilDAWG]

It is certainly a straight-shelled nautiloid.  However I suspect what you have is the siphuncle rather than a phragmocone, as I see no evidence of chambers (camerae).  Large robust siphuncles like this are typical of many Ordovician and Silurian actinocerid nautiloids.  If it is Silurian, Huronia would be one possibility.  It does not really look like a Dawsonoceras to me.  Be aware that there are many genera of nautiloids, even if we are just talking about actinocerids, and confident ID would require more detailed photos, perhaps cross and longitudinal sections, and especially detailed information about the source geological formation.

 

Don

[Herb]

another vote for cephalopod, possibly Dawsonoceras sp..

[TqB]

I think Don's right and it's probably a siphuncle.

[PyritizeMe]

I thought the siphuncle was the tube in the center that allowed gas transfer , the Phragmocone is the end of the cephalopod which held chambers and the body chamber was connected to that . To call this a siphuncle with the suture designs would be an understatement unless I am wrong and thinking incorrectly . 

 

[TqB]

2 hours ago, PyritizeMe said:

I thought the siphuncle was the tube in the center that allowed gas transfer , the Phragmocone is the end of the cephalopod which held chambers and the body chamber was connected to that . To call this a siphuncle with the suture designs would be an understatement unless I am wrong and thinking incorrectly . 

 

 

You're right about the structural relationships but many siphuncles then were massive and often preferentially preserved.

 

This kind of thing:

 

 

 

[PyritizeMe]

11 hours ago, TqB said:

 

You're right about the structural relationships but many siphuncles then were massive and often preferentially preserved.

 

This kind of thing:

 

 

 

Unreal . Ive heard they go big but wow .... thanks T