Here is a brachiopod fossil that I sandblasted. It is from Sylvania, Ohio, USA in Lucas County. This brachiopod is called Paraspirifer bownockeri (Stewart, 1927) from the Silica Formation. Also note the encrusting Hederella (Hall, 1883) bryozoan (blackish root looking material). Fossil dates to the upper middle Devonian Period (Givetian Stage).