Bothrodon pridii is a supposed giant snake of South America. Based on the misidentification of an alleged 2.5-inch-long fossil poison fang found in the Gran Chaco area of South America in the 1920s and presumed to be from an unknown snake. In 1939, the object was positively identified as a prong from the shell of the Chiragra spider conch (Lambis chirarga).

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