Trilobite Cryptolithus bellus Lace Collars

Here are a number Cryptolithus bellus trilobite lace collars from the Ordovician period. It is in the Kope Formation or Eden Formation found in Carroll County, Kentucky.

I wonder if the little holes are eyes are some sort of touch sensors. The Fossils of Ohio book labels this type of trilobite as blind so I wonder if they were feelers of some sort. They seem some what staggered in nature. The outer most ring is elliptical and in between the ellipses on the next row are circular shapes. On the next row, smaller circular shapes where each circle is in between a larger set of circles.

It appears that underneath the top of the collar are more circular shapes that go around the front perimeter.

Halysites Chain Coral in Nashville

Here is a chain coral from the Silurian Period called Halysites. It appears to be about 8 cm long.

It was found in northern Nashville, Tennessee

Horn Coral Fragment - Siphonophrentis elongata

Here is a fragment of the Devonian Period horn coral called Siphonophrentis elongata (Rafenesque & Clifford, 1820). This image gives a number of views of the fragment and also shows a view from inside the horn coral. This fossil was found in central Jefferson County, Kentucky USA. It is found in the Jeffersonville Limestone.