Platyceras Snail Fossil

This fossil appears to be a Platyceras snail of a yet undetermined species. It was found in 2002 in a quarry in Clark County, Indiana USA. The layer it was found is called the Jeffersonville Limestone which dates to the Middle Devonian Period. It was part of the James Conkin collection. Thanks to Kenny for updating me about its species name.

Echinocorys Echinoderm Fossil

This image is of a sea urchin fossil called Echinocorys.  The shell once consisted of calcite but has since been replaced by crystalline silica. This animal lived in the Cretaceous Period. The fossil was found at Sidmouth, Devon, England.

This specimen was on display August 2016 in Natural History Museum of London, England.

Opal Gastropod Fossils

Pictured are some nice fossils found in New South Wales, Australia (Lightning Ridge?). These snails date to the Cretaceous Period.

Fossils were on display August 2016 in Natural History Museum of London, England.