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by DigitalAtlasOfAncientLife in nature-plants
Fossil specimen of the brachiopod *Rafinesquina alternata* (as well as several additional brachiopods) from the Ordovician (Cincinnatian) of Union County, Indiana (PRI 42140). Specimen is from the research collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Length of rock is approximately 11 cm. Model by Emily Hauf.