| Top to bottom--Shark tooth from an extinct shark called scientifically, Campodus; from the upper Pennsylvanian Raytown Limestone, Kansas City Group, Missourian Stage. Bottom--teeth from the extinct shark called scientifically Peripristis from the upper Pennsylvanian Hickory Creek Shale of the Lansing Group, Missourian Stage. Specimens collected and photographed by an individual who goes by the cybername "Missourian." I edited and processed the images through photoshop. |