Pyrite on an unidentified crinoid stem from the Waldron Shale of Clark County Indiana, USA. Crinoid lived in the Silurian Period.
Saturday, May 8, 2010
Silurian Period Pyrite Crinoid Stem
Pyrite on an unidentified crinoid stem from the Waldron Shale of Clark County Indiana, USA. Crinoid lived in the Silurian Period.
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