ID help request/I THINK- Nashville Group or maybe Warsaw/St Louis

[sarahbbgun]

I’m pretty dang sure I found this in the Nashville group. Slight chance I found it near Ashland City/Warsaw and st Louis limestone- ish area. 

Thanks for any help at figuring out what this precious AKA Teet is. 
 

when I washed it I screwed it up a bit. The what looked to be laminae layers/wavy really did lighten up/wash away. I’ve gotta stop ruining my fossils with the hard scrubbing 

[Fossildude19]

I am not seeing anything immediately recognizable here. 

 

My first guess is some sort of trace fossil, maybe like Conostichus, or Conichnus?   

Second guess is concretion, but, not even sure of that.

Sorry I can't help further, ... maybe wait for other opinions.
 

[doushantuo]

Distribution of Conichnus and Amphorichnus in the Lower Paleozoic of Estonia (Baltica)
Olev VINN Mark A. WILSON Ursula TOOM

carnets de geologie 15  (size 1.1. mB)

 

I agree with Tim in that it is extremely hard just to judge from the pix alone what this could be

to put it poshly: it's morphology is distinctly equivocal

33524412.pdf