Need help with unknown from Jacksboro TX

[BobWill]

I thought I posted this before but couldn't find it, maybe it was on facebook. It also seems like I've recently seen something similar but don't know where. Must take better notes...

 

 

Closer in

 

 

Closer still to wrinkled end on the right

 

 

The image after this is looking in the direction of the arrow at the layers visible on the edge

 

 

edge view

[abyssunder]

Are you referring to Archaeocidaris tooth, Bob ?

[BobWill]

40 minutes ago, abyssunder said:

Are you referring to Archaeocidaris tooth, Bob ?

I post a couple a while back I found at Lake Bridgeport. I would think this thing is way too big for that but thanks for the suggestion.

[Al Dente]

The close up pictures show a texture similar to some brachiopods.

[BobWill]

1 hour ago, Al Dente said:

The close up pictures show a texture similar to some brachiopods.

That's about the only thing I could guess but I don't recognize the odd folding on the wide end or the bumpy texture from anything on the fauna list for this site. Anything you can put a name on?

[Miocene_Mason]

The layering makes me think it has to be a mollusk, and the time range makes be think brachiopod, but it's unlike any brachiopod piece I've ever seen.

[BobWill]

56 minutes ago, WhodamanHD said:

The layering makes me think it has to be a mollusk, and the time range makes be think brachiopod, but it's unlike any brachiopod piece I've ever seen.

Though brachiopods and mollusks may have layering that is similar in some ways I just want to point out that a brachiopod is not a mollusk for the benefit of those new to the taxonomy of marine fauna. That said, I agree about the general appearance. It's just the details that don't fit anything I am familiar with.

[Miocene_Mason]

25 minutes ago, BobWill said:

Though brachiopods and mollusks may have layering that is similar in some ways I just want to point out that a brachiopod is not a mollusk for the benefit of those new to the taxonomy of marine fauna. That said, I agree about the general appearance. It's just the details that don't fit anything I am familiar with.

oops, mixed up some words in an article I read on rostroconchia, sorry. Then I will say it looks like a lophotrochozoan, as to include both taxon

[Wrangellian]

...which wouldn't narrow it down very much!