Silurian colonial Coral from southern Indiana

[traveltip1]

I found this section of colonial coral in the Silurian of southern Indiana.

I believe it is Arachnophyllum.

Specimen is approxately 9x5x3 inches.

Photos views are oblique, top & side cross-section showing laminae.

[Tidgy's Dad]

I think Arachnophyllum is correct. 

Nice piece.