Monday, November 5, 2012

Silurian Favosites Coral Encrusted With Pyrite

Favosites coral encrusted with pyrite found in the Waldron Shale of Clark County, Indiana, USA. It is not uncommon to find coral fossils like this in the Waldron Shale but not too many have pyrite deposits on them. These creatures lived in the Silurian Period (about 420 million years ago).

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