Cystiphyllum Horn Coral

Here is a image of a Cystiphyllum horn coral found in north east Jefferson County, Kentucky. It is from the Middle Devonian period in the Jeffersonville or Beechwood Limestones. You can see evidence of the cysts or sacks on this coral.  This coral was later renamed Cystiphylloides I believe for the Devonian Period corals and Cystiphyllum was used for Silurian Period corals.

Identification from Erwin Stumm's Silurian and Devonian Corals of the Falls of the Ohio pp. 54-55 (description) and plate 55 pp. 146-147.

Pennsylvanian Lycopod Fossil Root

Here are some fossils provided by Shamalama that are from the famous plant fossil area: Schuylkill County, Pennsylvania. It was found in the Llewellyn Formation and is from 300 million years ago (Pennsylvanian or Late Carboniferous period).

These fossils are the Stigmaria root and the little scar marks are where the rootlets once were.

The fossil fragments are about 15 cm long.

Devonian Tentaculites scalariformis?

This is a Tentaculites scalariformis (not sure about species) that lived in the Devonian period. It was found in Jeffersonville Limestone in Clark County, Indiana. I have been looking for another one of these for a while. This one is still in the rock with a lot of small brachiopods. The tip is quite small and fragile so it would be unwise to remove it from the rock.

Under magnification the tip still has its growth rings. The pictures show two side of the rock with one revealing much more of the creature's shell. The last picture has a different color because I was using a different light.