Devonian Wood: Callixylon Fossil

Devonian wood fragments of an Archaeopteris progymnosperm. The wood part is also referred to as a Callixylon. These fragments were found in Bullitt County, Kentucky at road cuts.

This specimen was found in the New Albany shale. The Callixylon log maybe floated into this area from Pennsylvania or New York where it sank and was covered. The weight of layers building up over time flattened the wood pieces. Heat and pressure coalified or vitrinized the wood.

Caryocrinites Silurian Crinoid

Here are some Silurian period crinoid calyx plates from the Louisville limestone. It is called Caryocrinites and was found in Jefferson County, Kentucky.

Sandblasted Devonian Brachiopod

On June 17, 2009 I highlighted a Devonian Mediospirifer brachiopod. Today, I revisit this brachiopod after sandblasting the matrix off of it revealing more details of the encrusting Aulocystis corals and bryozoan. You can now see the full shape of the interlinking Aulocystis.

Close up of a cleaned up Philhedra inarticulate brachiopod.