Lectotype right humerus IRSNB 1191-M266 of the stem phocine Frisiphoca aberratum from the ‘Diestian’ of the ‘third section’ at Borgerhout, Antwerp, in posterior (a), medial (b), anterior (c) and lateral (d) view. Lectotype right humerus IRSNB 1118-M260 of the stem phocine Frisiphoca affine from the ‘Diestian’ of the ‘third section’ at Deurne, Antwerp, in posterior (e), medial (f), anterior (g) and lateral (h) view. Corresponding labelled drawings of right humerus IRSNB 1191-M266 of Frisiphoca aberratum in posterior (i), medial (j), anterior (k) and lateral (l) view; and lectotype right humerus IRSNB 1118-M260 of Frisiphoca affine in posterior (m), medial (n), anterior (o) and lateral (p) view. Broken and obliterated parts are indicated in grey. Scale bar equals 10 cm.