Ordovician fossil (southern indiana), never found one like this before

[Harrison Smith]

 

[connorp]

I would guess an eroded coral, but the pictures are too far away.

[FossilNerd]

I agree with @connorp. Looks like a very eroded or weather worn coral. 

[Harrison Smith]

54 minutes ago, connorp said:

I would guess an eroded coral, but the pictures are too far away.

That makes sense, the color and texture are just very different than other corals I have found and I thought it might be something new

Edited July 3, 2022 by Harrison Smith

[TheInvertebrateGuy]

Definitely a Rugose coral from the radiating lines at the underneath of the fossil. More specifically, a Rugose coral from the family Streptelasmatidae, such corals are known from the Ordovician of Indiana and are also defined by distinct lines that go vertically up and down the sides of the coral .