Help identifying some fossil brachiopods, bryozoan, and Chondrichthyans from Late Pennsylvanian rocks in Illinois

[Joseph Fossil]

On Sunday/August/19/2023, myself and @Tales From the Shale went fossil hunting at some Late Pennsylvanian rock formations in Illinois! It was a pretty productive trip! We found lots of brachiopod fossils and an awesome amount of Chondrichthyian fossils! 

 

There are some fossils though that I'm a bit confused on their exact ID and I would like help identifying them? I put and photographed some of these specimens under a microscope and dissecting scope to help with species/genera identification.

 

Here are the various and pretty awesome specimens from the trip I would like help Identifying:

 

 

Unknown Specimen 1 (A Posible and partial Ctenacanthiform tooth)

 

 

Unknown Specimen 2 (A Peripristis tooth but not 100% sure of exact species ID)

 

 

Unknown specimen 3 (I think either Deltodus or another type of Petalodontid)

 

 

Unknown specimen 4 (@Tales From the Shale helped me identify it as a bryozoan, but I forgot what type/genera he said it was (though he said it was pretty rare), I found at least 2 specimens of this type on this trip) 

 

 

Unknown Specimen 5 (Found on the same piece of matrix rock as Unknown Specimen 4, I'm not 100% sure what it is)

 

 

Unknown Specimen 6 (some other type of bryozoan, I have no idea what could be it's exact ID)

 

 

Unknown Specimen 7 (Found on the same piece of matrix rock as Unknown Specimen 6, some other type of bryozoan but I have no idea what could be it's exact ID)

 

 

Unknown Specimen 8 (some other type of bryozoan, I have no idea what could be it's exact ID)

 

 

Unknown Specimen 9 (A Possible small Petalodus tooth)

 

 

Unknown Specimen 10 (A Possible small Deltodus tooth)

 

 

 

[Joseph Fossil]

Unknown Specimen 12 (Unknown Brachiopod)

 

 

Unknown Specimen 12 (A Possible Ctenacanthiform tooth on the back of a Brachiopod)

 

 

Unknown Specimen 13 (A Possible Chondricthyan crusher plate tooth)

 

 

Unknown Specimen 14 (A Possible Shark Spine)

 

 

Unknown Specimen 15 (Possible Brachiopod shell or Shark tooth)

 

 

Unknown Specimen 16 (Partial Shark tooth found by @Tales From the Shale) 

 

 

Unknown Specimen 17 (Found on the same piece of matrix rock as Unknown Specimen 16, possible Shark spine, brachiopod, or even Shark tooth)

 

 

Unknown Specimen 18 (Some partial Shark teeth)

 

 

Unknown Specimen 19 (Possible imprint of or really partial Shark tooth)

 

 

Unknown Specimen 20 (A Partial Shark tooth)

 

 

 

@connorp @deutscheben What do you think?

[Tales From the Shale]

The two specimens you say were bryozoan, I actually stated as Chonetina flemingi. Which is a member of the Productida brachiopods.

[connorp]

1. Indeterminate bone fragment
2. Peripristis semicircularis
3. Holocephalan tooth plate. Could be identifiable with prep.
4. Chonetina
5. ?
6. Fenestrate bryozoan
7. Probably unidentifiable bryozoan
8. Fenestrate bryozoan
9. Bone fragment. Could be identifiable with prep.
10. Bone fragment
11. Neospirifer
12. Probably pyrite
13. ?
14. Bone fragment
15. ?
16. Palaeoniscoid scale
17. Bone fragment
18. Bone fragments
19. ?
20. Bone fragment

[cngodles]

4 hours ago, Joseph Fossil said:

A Peripristis tooth but not 100% sure of exact species ID

Ginter et al 2010 call the genus monotypic, so it can only be Peripristis semicircularis if not naming something new.