Styracopterid (Actinopterygii) ontogeny and the multiple origins of post-Hangenberg deep-bodied fishes Author Sallan, Lauren Cole Author Coates, Michael I. text Zoological Journal of the Linnean Society 2013 2013-07-22 169 1 156 199 http://dx.doi.org/10.1111/zoj.12054 journal article 10.1111/zoj.12054 0024-4082 5286624 STYRACOPTERUS TRAQUAIR, 1890 Type and only species: Styracopterus fulcratus ( Traquair, 1881 ) . Diagnosis (emended from Gardiner, 1985 ): Styracopterid eurynotiform fish with two smooth ganoine bands on jaw margins of maxilla and dentary; maxilla with right-triangle-shaped posterior expansion and pointed anterior ramus; dentary shallow with angled anterior margin; mandibular canal pores large; maxillary teeth large and fang-like with a visible collar marking acrodin caps; palatal tooth-plate denticles large, stout, and rounded; mandibular tooth plate denticles small and rectangular; premaxilla fused to rostral; frontals with sigmoidal lateral margin; parietals triangular with sigmoidal lateral margin; dermopterotic curved laterally; post-temporal broad; suspensorium near vertical; preoperculum vertical with straight margins; opercular rectangular; subopercular taller than opercular with straight posterior margin; broad patches and bands of smooth ganoine over pointed anterior ramus; flank scales tall with ornament of nested ridges dorsally and horizontal ridges ventrally; dorsal ridge scales with thick horizontal ornament; ventral ridge scales near skull; pectoral fin long and scythe-shaped with broad leading lepidotrichia bearing rectangular segments; pelvic fin small and triangular with single preceding basal fulcrum; anal fin subtriangular with straight posterior margin. Occurrence: Early Visean of Scotland.