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Cyptendoceras magnus

Cephalopoda - Ellesmerocerida - Protocycloceratidae

Taxonomy
Cyptendoceras magnus was named by Cullison (1944). It is a 3D body fossil. Its type locality is M. S. M. 75.28. Highway 25 down to Crystal City Glass Workers Country Club., which is in a Cassinian carbonate dolomite/chert in the Cotter Formation of Missouri.