Unidentified Waldron Shale Cystoid Fossil

This posting shows a series of images of a brownish fossil found in the Waldron Shale of Clark County, Indiana, USA. At first I thought it might me some sort of crushed crinoid calyx but my cousin suggested it might be some sort of cystoid fossil. It could be similar to the Holocystites found in the Silurian aged Osgood Formation limestone. See Kentucky Paleontology Society web site page on some of these fossils.

Agaricrinites wortheni

Here is a picture of a fossil that appears to be an Agaricrinites wortheni crinoid plate. It was found in the Harrodsburg Limestone of Floyd County, Indiana USA. The fossil dates to the Mississippian Period.

Thanks to Kenny for the picture.

Uperocrinus nashvillae Crinoid Pieces

Here are some pictures of some fossil pieces that appear to be an Uperocrinus nashvillae crinoid. They were found in the Harrodsburg Limestone of Floyd County, Indiana USA. The fossils date to the Mississippian Period.

Thanks to Kenny for the pictures.