Alveolites Branching Coral Fossil

This image is of an Alveolites winchellana (Miller) coral fossil. It was found in the Jeffersonville Limestone of Clark County Indiana USA. The fossil dates to the Devonian Period.
This fossil was on display at the Falls of the Ohio State Park Interpretive Center as of January 2016. This coral is one of over 200 species that were known to live in this area over 300 million years ago.

Pterocrinus Crinoid Calyx with Gastropod Fossil

This calyx was found while sifting through matrix while looking for dis-articulated crinoid arms for another fossil. It is quite a find measuring a little over 3 cm in width and it has part of gastropod fossil (see arrow) located near the top of its folded up arms.

This crinoid appears to be a Pterocrinus acutus (Wetherby, 1879). The creature existed in the Mississippian Period and was found in the Glen Dean member of Grayson County Kentucky USA. This next image has 3 arrows highlighting the spines on the arms.

Side view of spines below.

Thanks to Kenny for the images.

See more images of crinoids like this at Don R. Chesnut's web page on fossils of the Sloans Valley Member (Paragon Formation).

http://www.uky.edu/OtherOrgs/KPS/stratigraphicfauna/sloansvalleymacrofauna/pages/sloansvalleyechinodermata.html

Syringopora Coral Fossil

This image shows a Syringopora hisingeri (Billings) coral fossil. They are found in the Jeffersonville Limestone of Clark County Indiana USA. The coral existed in the Devonian Period. It was on display at the Falls of the Ohio State Park Interpretive Center as of January 2016.