Chain Coral Halysites Photographed in Sunlight

Chain coral Halysites from the Silurian Period. This one was found in central Jefferson County in the state of Kentucky in the United States.

The picture was taken in sunlight while an earlier post was photographed using incandescent light.

Silurian Chain Coral: Halysites

Here is a another Halysites segment from the Silurian Period. The chain appearance is much more apparent in this specimen. It could use some more cleaning though.

The Horn Coral Siphonophrentis elongata

Besides finding Halysites in the Silurian layer I also come across segments of a species of horn coral that was huge. This is a smaller segment that measures about 7 cm in diameter. It is from the Devonian period and was called Siphonophrentis elongata (Rafenesque & Clifford, 1820).  Found in central Jefferson County, Louisville, Kentucky USA. This fossil is found in the Jeffersonville Limestone.