Coelodus saturnus Heckel, 1854

Poyato-Ariza F. J. & Wenz S., 2002, A new insight into pycnodontiform fishes, Geodiversitas 24 (1), pp. 139-248 : 222

Coelodus saturnus Heckel, 1854

HOLOTYPE. — NMW 1857 .XXXIII.2 ( Heckel 1856: pl. 3, fig. 1; Figs 2A ; 22A ; 27A ; 38B ).

REVISED DIAGNOSIS. — As for genus (monotypic genus).

Subfamily PYCNODONTINAE Agassiz, 1833

Figures

FIG. 2. — Forms previously referred to the genus Coelodus Heckel, 1854; A, C. saturnus Heckel, 1854, type species, holotype, NMW.XXXIII.2. Photo Schumacher, courtesy Ortwin Schultz; B, Ocloedus subdiscus n. comb., topotype MNHN MSE 965. Photo Serrette. Scale bars: A, 5 cm; B, 1 cm.

FIG. 22. — A, Coelodus saturnus Heckel, 1854, oral region of the holotype, NMW.XXXIII.2, right side, lateral view, with left prearticular in occlusal view. Photo Schumacher, courtesy Ortwin Schultz.; B, Ocloedus subdiscus n. comb., vomer of specimen MGSB 20659. Photo Serrette (from Wenz 1989b); C, Ocloedus subdiscus n. comb., lower mandible of specimen MGSB 20376a, left side, occlusal view. Photo Serrette (from Kriwet et al. 1999); D, Coccodus armatus Pictet, 1850, vomer in occlusal view (private collection). Photo Serrette. Abbreviations: D, dentary teeth; Part, prearticular teeth; Pmx, premaxillary teeth; Vo, vomerian teeth. Scale bars: A, 2 cm; B, 1 cm; C, D, 5 mm.

FIG. 27. — A, Coelodus saturnus Heckel, 1854, caudal region as shown by the holotype, NMW 1857.XXXIII.2. Photo Schumacher, courtesy Ortwin Schultz; B, Ocloedus subdiscus n. comb., camera lucida drawing of the caudal region as shown by specimen MNHN MSE 965. Both right side. Abbreviations: aax, anal axonost; dax, dorsal axonost; di, diastema; epel, epichordal elements; ha, haemal arcocentrum; hyel, hypochordal elements; na, neural arcocentrum; sf, sagittal flange; ud, urodermals. Scale bars: A, 1 cm; B, 2 mm.

FIG. 38. — Anterodorsal region of the body in A, Ocloedus subdiscus n. comb., specimen MGSB 20376b. The incompleteness of the posterior region of the dermosupraoccipital allows observation of the shape of the first dorsal ridge scale, which is normally in a very close contact with this bone. Reverted left side, lateral view. Photo Serrette, under ultraviolet light; B, Coelodus saturnus Heckel, 1854, holotype, NMW 1857.XXXIII.2. Right side, lateral view. Photo Schumacher, courtesy Ortwin Schultz. Abbreviations: dax, dorsal axonosts; drs, dorsal ridge scales; drs1, dorsal ridge scale 1; ll, lateral line; papr, parietal process; rsc, reduced scales; sf, sagittal flanges. Scale bars: A, 5 mm; B, 1 cm.