Friday, April 18, 2014
Dolatocrinus triangulatus? Crinoid Calyx Fossil
This appears to be a
crinoid calyx fossil. It was found in the Thunder Bay Formation of Alpena Michigan, USA. It dates to the Middle Devonian Period (Erian).
Learn more at the
michiganbasinfossils.org web site
Thanks to Mary Ann for letting me take some pictures of this fine specimen.
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