Internal mold Cyclonema?

[Recker]

I found this while looking around the Whitewater River area, Franklin Co Indiana, Southeast Indiana.  It's eroded a bit but could it be an internal mold of the top of a Cyclonema?  Appreciate everyone's help!

Linda

[Tidgy's Dad]

Just a suggestively eroded piece of rock, I think. 

[ynot]

Agree with Tidgy's dad.

[Recker]

2 minutes ago, Tidgy's Dad said:

Just a suggestively eroded piece of rock, I think. 

My hopes dashed once again.  Oyyy haha well I can always dream....until I post on here.  Just kidding I appreciate all your help and wisdom.

[Tidgy's Dad]

1 minute ago, Recker said:

My hopes dashed once again.  Oyyy haha well I can always dream....until I post on here.  Just kidding I appreciate all your help and wisdom.

Keep at it. 

You'll learn ..and they're out there waiting! 

[Recker]

Just now, Tidgy's Dad said:

Keep at it. 

You'll learn ..and they're out there waiting! 

I'ma lookin!

[Recker]

I've been reading "A Sea Without Fish:  Life in the Ordovician Sea of the Cincinnati Region and it really is fascinating and has helped alot.  Thanks again.

[Uncle Siphuncle]

Also, Cyclonema is a short spired form.