Scott Mardis on The Great Horned Serpent

Part three on Plesiosaurian correspondances of Lake Champlain creatures compares an old Native pictograph of the Great Horned Serpent to a modern reconstruction of a Plesiosaur:

 

Scott Mardis

here's the provenence again if you need a reference.http://www.academia.edu/823402/Horned_Panthers_and_Erie_Associates
no petroglyph date in paper but is old and represents the Chepichcalm, MicMac horned serpent