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Ordo Ringkasan for Gonorynchiformes
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Acuan utama |
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Ordo |
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Gonorynchiformes milkfishes |
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Kelas |
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Teleostei |
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Sister Order |
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Cypriniformes 150 M years |
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Acuan |
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First Fossil Record |
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late Jurassic |
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Occurs in |
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Laut |
Fresh |
Payau |
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Remark |
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Orbitosphenoid absent; parietals small; quadrate condyle far forward; teeth absent on fifth ceratobranchial; first three vertebrae specialized and associated with one or more cephalic ribs; suprabranchial (=epibranchial) organ present (consisting of lateral pouches in the posterior part of the branchial chamber behind the fourth epibranchials); mouth small; jaws toothless; no postcleithra; 5-7 hypural plates. |
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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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Greek, gonos = descent, origin + Greek, rhyngchos = snout, muzzle + Latin, forma = shape (Ref. 45335). |
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Keluarga-keluarga |
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