Friday, May 11, 2012

fossil coin



Not really. A discoid segment of a crinoid stem, one of a stack of calcium-carbonate "coins" made by an animal known as a sea lily. This is a small one, only about 1 mm across.
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2 comments:

Richard H. Fay said...

Cool!

I have a fossil rock that seems to be made up almost completely of crinoid stems.

May 13, 2012 at 9:12 AM
David Kopaska-Merkel said...

Such crinoidal rocks are beautiful & pretty common. I have one.

May 14, 2012 at 5:57 AM

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