Zeacrinites wortheni Crinoid Calyx Fossil with Stem

This crinoid appears to be a Zeacrinites wortheni (Hall, 1858) crinoid calyx fossil. As a bonus, this calyx has part of its stem. It was found in the Glen Dean Member of Grayson County, Kentucky, USA. The fossilized animal dates to Chesterian, Upper Mississippian Period. I believe this species was named for a paleontologist from Illinois named Amos Henry Worthen (1813-1888). Worthern was James Hall's assistant while he was State Geologists of Iowa 1855-1857.

Next to the calyx is some intricate Fenestella bryozoan fossils.

Thanks to Kenny for this remarkable fossil gift.

Bembexia Snail Fossil

These fossils appear to be Bembexia sulcomarginata? (Conrad 1842) gastropods. They were found in the Jeffersonville Limestone of Clark County, Indiana USA. The fossils date to the Middle Devonian Period.

Unicinulus stricklandi Brachiopod

Here are some pictures of a what appears to be Unicinulus stricklandi brachiopod fossil. It was found at St. Paul Quarry in the Waldron Shale of Shelby County Indiana USA. The brachiopod existed in the Middle Silurian Period.