Invertebrates in the Devonian

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Favosites turbinatus © 2006 Joe Koniecki	Heliophyllum verticale (Hall) © 2006 Falls of the Ohio State Park	Hexagonaria © 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum
Hexagonaria © 2004 Michigan State University Museum	Hexagonaria percarinata © 1998 Dr. Richard Paselk, Humboldt State University Natural History Museum	Prismatophyllum © 2004 Indiana State Museum, Indiana Geological Survey, and Indiana University
Prismatophyllum ovoideum (Davis) © 2006 Falls of the Ohio State Park	Siphonophrentis © 2004 Indiana State Museum, Indiana Geological Survey, and Indiana University	Tabulata © 2001 Richard Schrantz

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