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13 results for “Uraniacanthus”
FIG. 12 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 12. - Uraniacanthus Meckel's cartilage: A, U. probaton (Bernacsek & Dineley, 1977) n. comb., UALVP42095. Modified from Hanke & Davis (2008: fig. 9D) by being flipped horizontally 180 degrees and relabelled; B, U.curtus (Powrie,1870) n. comb., NMS G.1891.92.250. Abbreviations: cp, coronoid process; lt.mk, left Meckel's cartilage; rt.mk, right Meckel's cartilage. Scale bars: 1 mm.
FIG. 10 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 10. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1964.31.30A, an incomplete moderate sized specimen from Hayston Hill, Angus, Scotland. Scales removed from the dorsal caudal region (A-E), posterior to the pdfs (F-K), and mid-flank (L-O), photographed under ESEM: A, lateral view; B, anterolateral view; C, posterocrown view; D, anterocrown view; E, posterior view with the back of the scale crown broken off.; F, crown view; G, crown view; H, posterior view; I, lateral view; J, crown view; K, basal view; L, laterocrown view; M, lateral view; N, crown view; O, crown view. Abbreviations: c, canal; p, pore opening. Scale bars: 0.1 mm.
FIG. 9 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 9. — Uraniacanthus curtus (Powrie, 1870) n. comb., an incomplete moderate sized specimen from Hayston Hill, Angus, Scotland: A, B, NMS G.1964.31.30B, in situ but scattered body scales on the counterpart; C, D, NMS G.1964.31.30A, in situ scattered scales in the tail region of the part. Scale bars: 0.5 mm.
FIG. 11 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 11. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1964.31.30A, an incomplete moderate sized specimen from Hayston Hill, Angus, Scotland. Various thin sections of scales: A, vertical longitudinal section; B, vertical longitudinal section with the anterior of the crown missing; C, vertical transverse section; D, vertical transverse section; E, mid crown horizontal section; F, low crown horizontal section. Abbreviations: ac, ascending canal; cc, circular canal; cz, crown growth zone; dt, dentine tubules; lc, longitudinal canal; p, pore opening; rc, radial canal. Scale bars: 0.1 mm.
FIG. 6 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 6. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1964.31.30A, the part of an incomplete, moderate sized specimen from Hayston Hill, Angus, Scotland: A, photograph of the specimen; B, line drawing of the specimen. Abbreviations: ad.fs, anterior dorsal fin spine; a.fs, anal fin spine; cc, central canal; cf, caudal fin; hp, head plates; scs, scapula shaft; pd.fs, posterior dorsal fin spine. Scale bars: 10 mm.
FIG. 7 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 7. — Uraniacanthus curtus (Powrie, 1870) n. comb. anterior dorsal fin spines: A, NMS G.1964.31.30A, from Hayston Hill, Angus, Scotland; B, NMS G.1891.92.250, from Turin Hill (Tillywhandland), Angus, Scotland. Abbreviation: scs, scapula shaft. Scale bars: A, 10 mm; B, 5 mm.
FIG. 4 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 4. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1891.92.250, a very small complete individual from Turin Hill (Tillywhandland),Angus, Scotland: A, complete specimen; B, ossification of the right Meckel's cartilage with the coronoid process visible on the upper surface; C, external view of the spatulate opercular plates with a trace of thin ridge ornamentation; D, scapulocoracoids;E, possible prepectoral spines with the posterior one being larger; F, internal surface of a postorbital plate. Scale bars: A, 5 mm; B-D, F, 1 mm; E, 0.1 mm.
FIG. 3 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 3. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1891.92.249, holotype from Farnell: A, photograph of the specimen; B, line drawing of the specimen. Abbreviations: ad.fs, anterior dorsal fin spine; cf, caudal fin; ll, lateral line; pd.fs, posterior dorsal fin spine. Scale bars: 10 mm.
FIG. 5 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 5. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1891.92.250, a very small complete individual from Turin Hill (Tillywhandland), Angus, Scotland: Line drawing of the specimen. Abbreviations: ad.fs, anterior dorsal fin spine; a.fs, anal fin spine; cf, caudal fin; sc, scapulocoracoid; oc, opercular covers; op, occlusal plate; pd.fs, posterior dorsal fin spine; p.fs, pectoral fin spine; pp, postorbital plate; pp.s1, first prepectoral spine; pp.s2, second prepectoral spine; ppv.fs2, second prepelvic fin spine; pv.fs, pelvic fin spine. Scale bar: 5 mm.
FIG. 1 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 1. — Uraniacanthus curtus (Powrie, 1870) n. comb. NMS G.1891.92.249, holotype from Farnell. A reproduction of Powrie's figure (1870: pl. 12, fig. 7) of the complete specimen and his enlargement of the scales (Powrie 1870: pl. 12, fig. 7a).
FIG. 2 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 2. — Diplacanthus longispinus Agassiz, 1844, NMS G.1891.92.338, a complete specimen from Gamrie, Banffshire, Scotland: A, detail of the head showing the position of the jaw plates; B, close up of the tooth plate positioned on the upper surface of the lower jaw; C, detail of the posterior dorsal fin spine showing the deep base of insertion with fine, parallel ridges Scale bars: A, 10 mm; B, 1 mm; C, 5 mm.
FIG. 13 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 13. — Reconstruction of Uraniacanthus curtus (Powrie, 1870) n. comb.
FIG. 8 in The Early Devonian Acanthodian Uraniacanthus curtus (Powrie, 1870) n. comb. from the Midland Valley of Scotland
FIG. 8. — Uraniacanthus curtus (Powrie, 1870) n. comb., NMS G.1891.92.249, holotype from Farnell: Magnified impressions of the body scales. Scale bar: 1 mm.
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