Note the horns on the plesiosaur handle found in 1959 in Shilou Xian, Shanxi Province in China. These are probably auditory-acoustic type receivers designed for submerged detection and tracking of fish.
Folks who see these kinds of animals seem to consistently identify horns on the animals observed.
As might be expected from the ever increasing discoveries on ancient artifacts, these animals were probably not as rare as we currently assume.
Clifford A. Paiva, M.S.
Imaging Physicist, BSM Associates
Head detail. Click and drag photo to resize.
Japanese plesiosaur head detail. Click and drag photo to resize.