Authenticity Check: Ordovician Wisconsin In-Situ Fossil Cephalopods

[dkurbel]

Can you help determine if these are real as described and any steps I might take to further confirm the details?

 

[seller verbiage removed -- Staff]

 

 

 

 

 

 

 

 

 

 

 

 

[Kane]

HEIC files cannot be processed on the forum, so you will need to convert them to JPG format. Also, please paraphrase the description. As per forum rules, no seller verbiage is permitted.  

 

"Do Not Copy or screenshot advertisement verbiage or post prices. "

[Fossildude19]

They all look real to me.

I cannot, however speak to any identifcations, other than that there are cephalopods and gastropods there.

[Misha]

These are real, but I only see 1 cephalopod, on the larger piece the segmented fossil. I believe that's likely Richardsonoceras sp. The rest are gastropods 

[Tidgy's Dad]

The gastropods may be Clathrospira ? 

[Mochaccino]

Seems real. These look very typical of the Platteville-Grand Detour formation steinkern fossils of Wisconsin. I've seen many and have a few myself.

[jfokeefe]

They look similar to the rock we have here on the other side of the state and they look like real specimen to me too. 

[minnbuckeye]

@Tidgy's Dad, Is the gastropod Trochnema instead of Clathrospira?? Hard to tell embedded in all the matrix.

[FossilDAWG]

I agree with Trochonema.  Clathrospira is conical, without the pronounced shoulders.

 

Don

[Tidgy's Dad]

On 9/3/2023 at 1:05 PM, minnbuckeye said:

@Tidgy's Dad, Is the gastropod Trochnema instead of Clathrospira?? Hard to tell embedded in all the matrix.

Yes, I think you're probably right.