Unknown coral? Likely Devonian

[LabRatKing]

This one has had me stumped since 1985. Found it while I was supposed to be harvesting potatoes.

Not sure of exact member as was kicked up by the plow.

Collected October 1985 by yours truly.

Erie County Pennsylvania

Summit Township 

Upper Devonian - Chadakoin Formation (?)

 

Found as is...red is from a wax marking crayon I didn’t realize I had in my pocket when I brought it to work today.

 

Detail photos of conspecifics included.