Daily Archives: November 7, 2014

Wooster’s Fossil of the Week: Upper Ordovician bivalve bioimmured by a bryozoan

This week’s fossil is a simple and common form in the Cincinnatian Series (Upper Ordovician) of the Ohio, Indiana and Kentucky tri-state area. We are looking above at the base of a trepostome bryozoan that encrusted the outside of an … Continue reading

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