FIG. 4 in The Early Devonian acanthodian Euthacanthus macnicoli Powrie, 1864 from the Midland Valley of Scotland

FIG. 4. — Euthacanthus macnicoli Powrie, 1864, head and branchial region: A, holotype NMS G.1891.92.231 from Turin Hill; B, NMS G.1891.92.236 from Turin Hill; C, NMS G.2011.33.1 from Balruddery Den; D, NMS G.2002.59.97 from Duntrune. Abbreviations: gr, gular rays; lt.br.p, left side branchiostegal plates; lt.ll, left side lateral line; lt.sb, left sclerotic bones; lt.sc, left scapulocoracoid; p.fs, pectoral fin spine; rt.br.p, right side branchiostegal plates; rt.ll, right side lateral line; rt.pp.p, right "prepectoral plate"; rt.sb, right side sclerotic bones; rt.sc, right scapulocoracoid; sgc1, first subsidiary gill cover; sgc2, second subsidiary gill cover; sgc3, third subsidiary gill cover. Scale bars: 5 mm.Published as part of Newman, Michael J., Burrow, Carole J., Den Blaauwen, Jan L. & Davidson, Robert G., 2014, The Early Devonian acanthodian Euthacanthus macnicoli Powrie, 1864 from the Midland Valley of Scotland, pp. 321-348 in Geodiversitas 36 (3) on page 329, DOI: 10.5252/g2014n3a1, http://zenodo.org/record/453845