Unknown Fossil from an Illinois Pennsylvanian Road Cut

[Guest]

HI all,

 

I found this while searching the Bond Formation Pennsylvanian road cut in Lasalle County, Illinois.

Any Ideas? 

 

 

 

 

 

Also, Here is a bonus pic of a Peripristis semicircularis I am prepping out. There are a few fossils I am working on right now, but I plan to make a post of my trip once things are cleaned up.

 

 

 

Thanks for looking!

 

 

 

[connorp]

The inarticulate brachiopod Orbiculoidea missouriensis.

[Joseph Fossil]

On 2/9/2024 at 10:58 PM, jforbes said:

HI all,

 

I found this while searching the Bond Formation Pennsylvanian road cut in Oglesby, Illinois. Any Ideas? 

 

 

 

 

 

Also, Here is a bonus pic of a Peripristis semicircularis I am prepping out. There are a few fossils I am working on right now, but I plan to make a post of my trip once things are cleaned up.

 

 

 

Thanks for looking!

 

 

 

 

@jforbes The fossil at the top is a type of brachiopod (at times I myself have thought initially it to be a Chondricthyan tooth, but yes that particular type is a brachiopod). I think @connorp is right with it being the Brachiopod species Orbiculoidea missouriensis. Both fossils are pretty nice but the Peripristis semicircularis fossil tooth is astounding, awesome job bro!!!