Sunday, July 5, 2009

Craterophyllum magnificum

This series of pictures are of a Devonian period horn coral called Craterophyllum magnificum (Billings). I have been looking for one of these for a while since I just found a fragment a year or two ago. They were pretty large corals. This fossil measures 2 cm at base, 6 cm tall, and 8 cm wide at the top. I am guessing it would have been 8-10 cm in diameter.

Stumm's Silurian and Devonian Corals of the Falls of the Ohio says this about this coral. "The specimens from the Falls of the Ohio may not be conspecific with Billings' type, but detailed examination of Canadian material must be made before this can be determined. Hall's description of Chonophyllum capax fits this species perfectly. His Silurian age designation is apparently in error."

My cousin found this one in Jefferson County, Kentucky in the Jeffersonville Limestone.






Saturday, July 4, 2009

Pipe Organ Coral - Entelophyllum?

Here is a large coral piece found in the Louisville Limestone in Jefferson County, Kentucky. It was from the Middle Silurian period. This coral could be a Entelophyllum rugosum (Smith) and also known as Eridophyllum rugosum Edwards and Haime.




Friday, July 3, 2009

Corals and a Brachiopod

Silurian coral Arachnophyllum pentagonum (Goldfuss) found in Louisville limestone showing a top and side views.
Here are two pieces of Coenites laqueata from the Silurian period found in Louisville limestone.

Close up of Silurian coral Coenites (older name Cladopora) laqueata.

Another close up view of the smaller coral Coenites laqueata Rominger.

Here are a number of Heliolites elegans Hall from the Silurian Period (Louisville limestone).

Devonian brachiopod Pseudoatrypa sp. from Jeffersonville limestone.

Large (11 cm diameter) Favosites turbinatus Billings with a closer view than previous images shown in an earlier posting. This fossil is Devonian period from Jeffersonville limestone.


Close up of Favosites turbinatus surface.