Fossilized Fish?

[BLT]

I’m hoping someone can tell me which type of fossils are in this rock. I found it in my yard in middle Tennessee. There are several crushed shells visible, but I’m especially wondering about the areas circled in red. The area circled in the third picture almost looks like a fish? The smaller circled area appears hollow. I’m not sure of what that could be. Any ideas? Thanks! 

[Herb]

I can not readily identify any fossils in the pictures

[GeschWhat]

It looks like there is something in the first photo. Any chance you can take a closeup of the area you circled on that one?

[caldigger]

First pic looks like it might have some shell bits. All others, I see nothing.

[RJB]

Me thinks you are trying to hard to see and the imagination is taking over.  Good luck though

 

RB

[BLT]

Thanks, @Herb, @GeschWhat, @caldigger, @RJB! ~  @GeschWhat, I tried taking closer shots of the area in the first picture, and two other areas which I thought had interesting shell fragments. (Interesting for a fossil hunting newbie)  

[ynot]

They do look like shell bits, but I doubt an ID can be made with such small fragments.

[BLT]

Gotcha. Thanks, @ynot!

[Archie]

Looks like weathered crinoid stem sections to me.

[BLT]

Thanks, @Archie