Ambonychia Clam Fossil with Bryozoan

These images are of Ambonychia sp. clam fossils encrusted with bryozoan. Fossils are from the Ordovician Period. They were found in Jefferson County, Indiana, USA.

Thanks to Kenny for images.

Vinlandostrophia Brachiopod Fossil with Friends

Here is an image of three fossils in one place. First is the Vinlandostrophia (Platystrophia) sp. brachiopod with an unidentified inarticulate brachiopod attached. On the inarticulate brachiopod is a Cornulites corrugatus worm tube fossil. These fossils date to the Ordovician Period. They might be from the McMillan/Grant Lake Formation and were found in eastern Jefferson County, Kentucky, USA.

Thanks to Kenny for image.

Crinoid Holdfast on Dead Crinoid Stem

This pictures show a crinoid holdfast growing on the side of a fallen crinoid stem. The fossils were found in the New Providence Formation of Scott County, Indiana USA. The fossils date to the Mississippian Period. Thanks to Kenny for the images.