Spriggina is a genus of early bilaterian animals whose relationship to living animals is unclear. Fossils of "Spriggina" are known from the late Ediacaran period in what is now South Australia. "Spriggina floundersi" is the official fossil emblem of South Australia. It has been found nowhere else. The organism reached about in length and may have been predatory. Its bottom was covered with two rows of tough interlocking plates, while one row covered its top; its front few segments fused to form a "head."