FIGURE 29. Rhadinacanthus longispinus, from a in The diplacanthid fishes (Acanthodii, Diplacanthiformes, Diplacanthidae) from the Middle Devonian of Scotland

FIGURE 29. Rhadinacanthus longispinus, from a small bonebed (NMS G.2014.15.1 is a sample) at Clardon Haven, Caithness, spine histology. Drawings of Sollas serial sections of various spines from juvenile fish. Abbreviations: adm.s=admedian spine; ad.fs=anterior dorsal fin spine; a.fs=anal fin spine; pelv.fs=pelvic fin spine; p.fs=pectoral fin spine; prepelv.s=prepelvic spine.