According to the RPG "Threshadon" is the official name. Thresher is a type of threshadon.Baggins 04:47, 31 December 2006 (EST)

I went ahead and made the move from thresher to threshadon. Further supporting evidence is that threshers drop threshadon ambergris and threshadon fangs. --Beep2 22:12, 31 December 2006 (EST)