FIG. 2 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland

FIG. 2. — Diplacanthus longispinus Agassiz, 1844, NMS G.1891.92.338, a complete specimen from Gamrie, Banffshire, Scotland: A, detail of the head showing the position of the jaw plates; B, close up of the tooth plate positioned on the upper surface of the lower jaw; C, detail of the posterior dorsal fin spine showing the deep base of insertion with fine, parallel ridges Scale bars: A, 10 mm; B, 1 mm; C, 5 mm.