Unidentified Horn Coral Fossil

This picture shows an unidentified horn coral fossil. The small bumps on across the fossil might be the remains of some type of holdfast the creature used to anchor itself to the seabed. It was found in the Glen Dean Member of Grayson County, Kentucky, USA. The fossil dates to the Mississippian Period. It is small about 1.7 cm tall.

Thanks to Kenny for the image.

Zeacrinites wortheni Crinoid Calyx Fossil with Arms

These pictures appear to show a Zeacrinites wortheni (Hall, 1858) crinoid calyx fossil. What is nice about this fossil is that most of its arms are intact. One side has the remains of Fenestella bryozoan. It was found in the Glen Dean Member of Grayson County, Kentucky, USA. The fossil dates to the Mississippian Period. It is small about 3 cm tall.

Thanks to Kenny for the pictures.

Zeacrinites wortheni Crinoid Calyx Fossil

These pictures appear to show a Zeacrinites wortheni (Hall, 1858) crinoid calyx fossil. If you look close at the top of the calyx image is a small point that appears to be part of the anal tube. It was found in the Glen Dean Member of Grayson County, Kentucky, USA. The fossil dates to the Mississippian Period. It is small about 1.5 cm tall.

Thanks to Kenny for the pictures.

Dr. James Hall named this species on page 69 in the 1858 Geological Survey of Iowa Part 2. He wrote "This is apparently a species distinct from Z. magnoliaformis, with shorter first radials extending little above the plane of the base , and arms much shorter and less robust;

for which I propose the name Zeacrinus worteni" He also describes the fossil on pages 683-684.