Ichthyocrinus subangularis Crinoid Calyx Fossil

These images are of what appears to be an Ichthyocrinus subangularis Hall crinoid calyx fossil. The fossil dates to the Middle Silurian Period. It was found in the Waldron Shale of Clark County Indiana USA.

Thanks to Alan for letting me image it.

Asteroceras stellare Ammonite Fossil

This image is of an ammonite cross cut section on display at the British Natural History Museum in London England. The creature was called Asteroceras stellare and lived during the early Jurassic period.

Fossil on display August 2016.

Rhodophyte Algae Fossil

This fossil is Rhodophyte (red) algae. It was found in the siltstone facies of Salem Limestone of Hardin County Kentucky USA. The plant dates back to the Middle Mississippian Period.

Thanks to Alan for letting me photograph it.