Horn phenotype B (rams). Phenotype B is a depression, with a bone knob in the depression.

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Photo of black ram lamb courtesy of Stephen Rouse of Shelteringpines, Allegan, MI

This is a photo of Shelteringpines Pompey Magnus, a Dillon F2, during the fall of his lamb year. Notice the deep depressions and narrow scur base. This ram exhibits slow growing bone knobs that routinely break off with no bleeding.

Bone knobs on one of Pompey's 2007 ram lambs, out of a Malcolm daughter.   Again, note the deep depressions around the base of the bone knobs.