Meristella maria Brachiopod Fossil

Imprint remains of fossilized brachiopod called Meristella maria (Hall, 1863). James Hall renamed the genus Meristina (Hall, 1867). These animals lived in the Middle Silurian Period.  Fossils found in the Osgood Shale of  Napoleon, Indiana USA.

 

Holocystites gyrinus Cystoid Fossil

This fossil which appears to be a Holocystites gyrinus (Miller & Gurley, 1894) cystoid was found in Napoleon, Indiana USA. It dates to the Silurian Period  (Telychian to Sheinwoodian stage) in age. The locality is world famous for this type of fossil. It was found in the Massie Formation or Osgood Shale.