DIPLACANTHIDAE Woodward, 1891

Burrow, Carole, Newman, Michael & Davidson, Robert, 2016, The diplacanthid fishes (Acanthodii, Diplacanthiformes, Diplacanthidae) from the Middle Devonian of Scotland, Palaeontologia Electronica 19, pp. 1-83 : 5-6

Family DIPLACANTHIDAE Woodward, 1891

Revised Diagnosis. Diplacanthiforms having scapulocoracoid with high scapular shaft extending dorsal to the lateral line, divided by a strong ridge into a postbranchial lamina and a posterior flange; dermal shoulder girdle with paired anterior plus paired pinnal plates; anterior dorsal fin spine longer than posterior dorsal spine; median, pectoral, and pelvic fin spines deeper than wide; spines with a main pulp canal and at least one accessory pulp canal; paired admedian spines and pectoral fin spines fused to, or articulating with, pinnal plates; anterior ventral plates fused to procoracoids; one pair of prepelvic spines; no prepectoral spines; dermal ornamented cheek plates lacking a sensory

BURROW: SCOTTISH DIPLACANTHID FISHES canal; large circumorbital plates do not completely encircle the orbit; scale crowns ornamented with longitudinal converging or transverse ridges; low robust occlusal bone on each lower jaw.