Kā ʻi he liliu fakalakalaka ʻo e ngaahi faʻahinga ko e ngaahi ika ʻeni ko e foʻi kupu mahuʻinga taha ia ʻi he vahaʻa ʻo e ngaahi meʻamoʻui ʻi tahi (ika) mo e ngaahi meʻamoʻui ʻi fonua (monumanu veʻefā). Naʻe hoko ia taʻu ʻe 400 miliona kuo hili pe ofi ki ai. Fakatātā ko e faʻahinga ʻo e Gogonasus andrewsae (ʻasi ʻi he faitā).