Cluster of Orthotetes Brachiopod Fossils

Fossil plate was found in the Edwardsville Formation of Floyd County, Indiana, USA. The fossils date to the lower Carboniferous (Mississippian) Period. The brachiopods on the plate appear to be Orthotetes keokuk. It is somewhat rare to find so many clustered together.

Thanks to Kenny for the image.

Crinoid Calyx Fossil Macrocrinus mundulus

This crinoid calyx fossil is called Macrocrinus mundulus (Hall). It dates to the Mississippian Period and was found Keokuk of Warsaw, Illinois, USA.

The fossil is part of the Indiana University Department of Geology collection.

Thanks to Kenny for image.

Parasites on Crinoid Fossil?

These images are quite interesting in that they show possible parasites or byrozoans on a crinoid stem fossil. These fossil was found in Scott County Indiana in the New Providence Formation. It dates to the Mississippian Period.

These might be something like the Wooster College paleontologists found on Jurassic crinoid stems: http://woostergeologists.scotblogs.wooster.edu/2014/11/14/woosters-fossils-of-the-week-a-new-crinoid-species-from-the-middle-jurassic-of-southern-israel-with-a-bonus-parasitic-infection/

Thanks to Kenny for images.

Unidentified Crinoid Holdfast Fossil

This image is of an unidentified crinoid holdfast attached to larger crinoid stem fossil. It was found in the New Providence Formation (Keokuk) of Scott County Indiana USA. This creature existed in the Mississippian Period. Thanks to Kenny for this image.

Unidentified Crinoid Calyx Fossil

This image is of an unidentified crinoid calyx fossil plate. It was found in the Keokuk Formation of Scott County Indiana USA. This creature existed in the Mississippian Period.

Thanks to Kenny for this image.

Platycrinites hemisphericus Crinoid Calyx Plate

This image is of a Platycrinites hemisphericus crinoid calyx fossil plate. It was found in the Keokuk Formation of Scott County Indiana USA. This creature existed in the Mississippian Period.

Thanks to Kenny for the images.