Spiro Mound in Oklahoma contained at least two artifacts engraved wwith the image of winged, horned serpents.

Engraved shell cup fragment described by Hamilton (1952: 70, Plate 111) as the World Symbol and four composite animal-snakes; fragment measured 6.5 x 9 inches (16.5 x 23 cm).


Engraved shell cup fragment described by Hamilton (1952: 70, Plate 110) as winged, blumed rattlesnakes; fragment measured 7 x 11 inches (18 x 28 cm).

Hamilton, Henry W.
1952 The Spiro Mound. Missouri Archaeologist 14.


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