I Have No Idea What This Is

[Lucid_Bot]

I have no idea what this thing is. I found it in Allegheny County today in the Pennsylvanian Glenshaw Formation in what I think is Brush Creek Limestone. Unfortunately it is only part of the fossil, but I thought the pattern might tip someone off as to what it is. Scale is in metric. Thanks for the help.

[Rockwood]

Chaetetid sponge ?

[Tidgy's Dad]

I think it is a fish tooth.  Maybe Deltodus sp. 

Nice find! 

Edited June 3, 2023 by Tidgy's Dad

[Lucid_Bot]

I'm not sure if these pictures adequately depict the specimen. I'll post some more after I have some dinner and caffeine

[Lucid_Bot]

12 minutes ago, Tidgy's Dad said:

I think it is a fish tooth.  Maybe Deltodus sp. 

 

The shape of it did sort of remind me of a tooth when I found it, and there was, what looked like root by it. 

[Tidgy's Dad]

13 minutes ago, Lucid_Bot said:

I'm not sure if these pictures adequately depict the specimen. I'll post some more after I have some dinner and caffeine

See here ; 

http://www.thefossilforum.com/index.php?/topic/108734-carboniferous-coral-bryozoan-something-else/

Edited June 3, 2023 by Tidgy's Dad

[Lucid_Bot]

29 minutes ago, Tidgy's Dad said:

See here ; 

http://www.thefossilforum.com/index.php?/topic/108734-carboniferous-coral-bryozoan-something-else/

 

I think that may be it. That pattern is very similar.

[Lucid_Bot]

I think I'll call this one resolved and refer to the link provided by Tidgy's Dad. Thanks for the help!

[connorp]

Yes, a holocephalan tooth plate. Not sure much more can be said since it's fragmentary.

[cngodles]

These “sharks” had crushing teeth, like modern rays. The mouth would have a pavement of them to grab and capture prey.