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According to Anne-Sofie Gräslund's system with additions. The descriptions here are abbreviated summaries of the definitions.
| RAK (980-1015) No animal heads. The runic bands end with a straight line or are open. | ||
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| Fp (1010-1050) Characterized by runic bands that end with animal heads seen from above. (Fp = "fågelperspektiv", "bird's eye view".) | ||
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| Pr1 / Ringerike style (1010-1040) Head seen in profile, very blunt-nosed with thick upper lip. Round eye. Ears, often two, set high, rounded and pointing straight up. Mouth open with short lower lip. No feet. Tail rolled up. | ||
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| Pr2 / Ringerike style (1020-1050) Head seen in profile, dominated by the line from ear to nose being concave. Round or drop-shaped eye, sometimes with a dot. Ear set high, pointing straight up or somewhat forward-leaning. Mouth open, with upper lip and nose bent upwards. Tail rolled up. | ||
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| Pr3 / Urnes style (1050-1080) Head seen in profile, dominated by the line from ear to nose being convex. Almond-shaped eye, not abnormally large. Ear set low, rounded, slightly backwards-leaning. Mouth open with lower lip slightly bent downwards. | ||
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| Pr4 / Urnes style (1070-1100) Head seen in profile, very elongated, gently bent. Ear set very low, pointing backwards. Very large eye that almost fills the whole head and is likewise bent. Closed mouth. Tail rolled up, with a thick "roll" and thin tail. Foot is straight and two-toed, offset from the body with a long leg. | ||
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| Pr5 / Urnes style (1100-1130) Head seen in profile. Two types of heads: One triangular with roots in Pr4, Pr3 and so on, and one with a rounded head and forehead of the same type as can be seen in Irish metal art from the early 12th century. Round or almond-shaped eye, half-open mouth with thick lower lip. Ear is missing or backwards-pointing. | ||
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| KB / Cross-band style The runic band's both ends are connected with a cross. | ||
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