✅ SOLVED Fossil of some sort?

[indy46]

Wasn't sure whether or not to post this in the Fossils section, but anyway, found this rock/fossil along a man-made lake around Cincinnati. We can't figure out what it is. Any guesses or explanations is much appreciated!

 

[osage express]

https://www.fossilera.com/fossils/10-inch-moroccan-crinoid-beautiful-display-piece I think this is it.Nice

 

[austin]

I think it's a Bryozoan fossil. Just a guess.

 

[old digger]

I am inclined to that your item looks like horn coral with a partial inside view.

 

[indy46]

I am inclined to that your item looks like horn coral with a partial inside view.

That seems to be it! Might explain the triangular discoloration on the rock itself. Thanks a lot!