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Ordo Ringkasan for Gadiformes
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Acuan utama |
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Ordo |
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Gadiformes cods |
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Kelas |
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Teleostei |
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Sister Order |
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Batrachoidiformes 20 M years |
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Acuan |
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First Fossil Record |
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middle Tertiary |
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Occurs in |
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Laut |
Fresh |
Payau |
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Remark |
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Pelvic fins, when present, inserted below or in front of pectorals (thoracic or jugular, rarely behind in Macrouridae) with up to 11 rays; no true spines in the fins; most with long dorsal and anal fins; scales usually cycloid, rarely ctenoid; premaxilla forms the entire margin of upper jaw, protractile in some; ectopterygoid toothless; orbitosphenoid and basisphenoid absent; branchiostegal rays 6-8; posterior vertebral reduction results in posterior dorsal and anal pterygiophores exceeding the number of caudal vertebrae; swim bladder without pneumatic duct (the swim bladder is absent in Melanonus and Squalogadus). |
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Kelas etymology |
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Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335. |
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Ordo etymology |
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Latin gadus = cod, 1889 + Latin, forma = shape (Ref. 45335). |
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Keluarga-keluarga |
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