Cerithium Gastropod Fossil?

This internal mold of a gastropod fossil was given to me at a recent local geology meeting. The person who gave it to me said a batch of them was given to him by someone who thought they were from Missouri.

After doing some Internet searching I determined this fossil mostly like resembles the inside mold of a snail shell fossil being sold as a chalcedony or agate snail fossil from Morocco, Africa. I have seen it listed as found in the Atlas Mountains or Assa or Dakla Oued ed Dahab Lagouira in Morocco.

The fossil might date to the Eocene Epoch. It might be a Turtella or Cerithium. I thought it might be fluorescent but it did not under long wave ultraviolet light. Thanks to Dale for the fossil.

The Fossil Fireplace - Leptaena Brachiopods

A very unique fireplace exist in a house in the city of Louisville Kentucky, USA. It was created by local geology professor from various fossil finds throughout his lifetime. I took a number of pictures of it and will blog about them in the near future. I am looking for documentation on a number of the specimens before publishing the some of the more unique fossils. I thought I would start with something I have not seen before.

The Leptaena brachiopod is a familiar sight when studying fossils from the Paleozoic Era. I have found this fossil creature in Ordovician, Silurian, Devonian and Mississippian Periods rocks (a range of over 150 million years). What I have not seen is a large number of them in a mass mortality plate like the one pictured. I assume it is why it was chosen to go in the fireplace. A very nice find!

Gennaeocrinus kentuckiensis Crinoid Calyx Fossil

This fossil appears to be a Gennaeocrinus kentuckiensis (Shumard, 1866) crinoid calyx fossil. It was found in the Jeffersonville Limestone of Jefferson County, Kentucky USA. This layer dates to the Devonian Period (Givetian). Genus was named by Charles Wachsmuth and Frank Springer in 1881.

 Wow, this fossil has a very nicely preserved outer pattern!

Document used to identify the fossil was Memoir 16 The Devonian Crinoids of the State of New York by Winifred Goldring, The University of the State of New York, 1923. Page 558? description of plate 31 on page 228?. One of the specimens used to describe fossil is listed as from collection of Doctor Springer and found at Hamilton Shale of Falls of the Ohio, Louisville, Ky. Also listed is a American Museum Natural History number 4162 found at Bear Grass creek in Louisville, Ky.

Thanks to Kenny for image and discovering this fossil.

LINK to source document.