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  • 12-47 Jay Terrell and his "Terrible Fish" Marker 12-47 Jay Terrell and his "Terrible Fish" Marker
Title, side A
Jay Terrell and his "Terrible Fish"
Text, side A
Around 1867, along the shale cliffs of the lakeshore of Sheffield Lake, Jay Terrell found fossils of a "terrible fish" later named in his honor as Dinichthys Terrelli. This animal, now known as Dunkleosteus terrelli, was a massive arthrodire (an extinct, joint-necked, armor-plated fish) that lived in the Devonian sea, which covered much of eastern North America some 354-364 million years ago. Dunkleosteus was armed with an incredible set of shearing jaws and was clearly the top marine predator in the Devonian Period (the "Age of Fishes").
Address
Lake Road (US 6)
Sheffield Lake, OH 44054
Location
Shell Cove Park, Lake Road (US 6)
Coordinates
Latitude: 41.495300, Longitude: -82.088550.
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