FIGURE 5 in The diplacanthid fishes (Acanthodii, Diplacanthiformes, Diplacanthidae) from the Middle Devonian of Scotland

FIGURE 5. Diplacanthus crassisimus spine morphology and histology: 1, 2, NMS G.2014.4.29 from Blackpark, Ross and Cromarty; 1, anterior dorsal fin spine; 2, posterior dorsal fin spine; 3, pectoral spine of NMS G.1878.5.349 from Springpark, Caithness; 4, pectoral spine NMS G.2014.44.7 from west side of Sandside Bay, Caithness; 5, pectoral spine impression, Snaky Noust, Westray, Orkney (HY501.405); 6, longitudinal section of pelvic spine NMS G.2014.33.10 from Corbie Den, Banffshire; 7, transverse section of anterior dorsal fin spine NMS G.2014.33.9 from Corbie Den, Banffshire; 8, 9, transverse section of anterior dorsal fin spine NMS G.2014.33.11 from the south of East Murkle Bay, Caithness, with magnified image of same specimen; 10, transverse section NMS G.2014.44.2 of pectoral fin spine and bone of scapulocoracoid from Corbie Den, Banffshire. Scale bars equal 1 cm for 1–6 (1, 2 at same scale); 1 mm for 8, 10; 0.1 mm for 7, 9.