Cinetodus Ogilby, 1898

(Figs 1–3, 42)

Type species: Arius froggatti Ramsay & Ogilby, 1886 .

Diagnosis

Mesethmoid median portion very narrow (2, 2> 0); extrascapular subtriangular (37, 1> 2); epioccipital contacting a small narrow area of diagonal crest associated with neural spine of fourth vertebra (44, 1> 0); vomer anterior margin very pronounced and acute (50, 0> 1); basioccipital lateral process absent with anterior and posterior portions equally developed (83, 1> 0); anteroventral portion of opercle subtrapezoidal, very long (127, 1> 0); metapterygoid one and one-half times longer than deep in perpendicular section (135, 1> 2); posterolateral processes of urohyal short (160, 1> 0); third basibranchial chalice shaped (168, 0> 1); upper (pharyngeal) tooth plate round, as wide as long (195, 1> 0); dorsal processes of upper (pharyngeal) tooth plate very short or absent (197, 1> 0); median crest associated with neural spine of fourth vertebra very high (202, 0> 1); Müllerian ramus robust (207, 0> 1); ventral surfaces of parapophyses of fifth and sixth vertebrae conspicuously concave (212, 0> 1); adipose fin long (222, 2> 1).

Ambiguousoptimization: Mesethmoidmedialnotchnarrowanddeep (1, 0> 1); lateral horn of lateral ethmoid compressed and spatulate (11, 0> 1); premaxilla very wide and short, as long as wide (120, 1> 3); posterior process of cleithrum very long (224, 0> 2).

Included species

Cinetodus froggatti Ramsay & Ogilby, 1886 .

Habitat and distribution: Fresh and brackish waters, southern New Guinea and northern Australia (Fig. 38).

Remarks

The results of the total-evidence analysis support the recognition of Cinetodus as previously defined by morphological and molecular data (Marceniuk and Menezes 2007, Betancur–R. 2009, Marceniuk et al. 2012), with a new hypothesis of relationships.