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Right ulna IRSNB 1121-M261a assigned here to Phocidae cf. Frisiphoca affine (originally Monatherium affine by Van Beneden [17]) from the ‘Diestian’ of the ‘third section’ at Borgerhout, Antwerp, in lateral (a), anterior (b) and medial (c) view. Scale bar equals 5 cm.
