Ordre Résumé for Ophidiiformes
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Réf. Princ. |
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Ordre |
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Ophidiiformes cusk eels |
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Classe |
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Teleostei |
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Ordre frère |
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Gadiformes 20 M years |
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Réf. |
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Premier signalement fossile |
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middle Tertiary |
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Présent dans |
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Marin |
Eau douce |
Saumâtre |
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Remarque |
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Pelvic fins when present, inserted at level of preopercle or farther anterior (mental or jugular), zero to two soft rays in each, and occasionally with a spine; base of dorsal and anal fins long, extending to and usually joined with caudal fin; nostrils paired on each side; dorsal and anal fin pterygiophores more numerous than adjacent vertebrae (the ratio being about 1.8:1). |
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Classe Étymologie |
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Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335. |
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Ordre Étymologie |
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Greek, ophis = serpent + Latin, forma = shape (Ref. 45335). |
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Familles |
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