Friday, November 26, 2010

Pyrite Coated Brachiopod + Crinoid

Picture of a Silurian Period brachiopod and crinoid stem coated in pyrite.  I am guessing this would be a concretion?  Fossils found in the Laurel Dolomite of Nelson County, Kentucky.

 Next picture shows the gray dolomite on the other side of the pyrite concretion.