Thamnoptychia alternans Coral

Here is a Devonian coral found in Jeffersonville, Indiana that can be found in the Beechwood Limestone. Here is Thamnoptychia alternans fragment. I really like the swirl pattern on this stem piece.

Another Bridge Support Mineral Deposit

This mineral deposit (thought it was fossil) is in the support of the Illinois Central 14th Street Railroad Bridge in Clarksville, Indiana near the Falls of the Ohio State Park.

This the last picture I took at the bridge and it looks like some sort of coral. It has this neat white residue that looks like salt or something on it. I am guessing it is been weathering since the bridge was built in 1868 so its been exposed for a long time.

After consulting the naturalist as the nearby Falls of the Ohio State Park he told me it was calcium carbonate (travertine).

Fossil in Bridge Support

This fossil is in the support of the Illinois Central 14th Street Railroad Bridge in Clarksville, Indiana near the Falls of the Ohio State Park.

I find this fossil most interesting because I am not sure what it is but it looks like a crinoid stem on its side and the brown looking arms look like part of its calyx. Maybe it is a squished coral or sponge.