From Corder, Joan. A Dictionary of Suffolk Crests: Heraldic Crests of Suffolk Families. Vol. XL. 1998.

WYVERN (a monster shown as a dragon in every respect except that in place of hindquarters, it has a barbed serpents tail)

Out of a mural crown or a wyvern's head (Daines, Deynes, of Coddenham) Davy, A. (Barett M.S.)