Left: fylfot. Right: gammadion.
The fylfot or fylfot cross (/ˈfɪlfɒt/ FILL-fot) and its mirror image, the gammadion, are types of swastika associated with medieval Anglo-Saxon culture. It is a cross with perpendicular extensions, usually at 90° or close angles, radiating in the same direction. However – at least in modern heraldry texts, such as Friar and Woodcock & Robinson (see § Bibliography) – the fylfot differs somewhat from the archetypal form of the swastika: always upright and typically with truncated limbs, as shown in the figure at right.