Ordre Résumé for Polymixiiformes
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Réf. Princ. |
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Ordre |
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Polymixiiformes beardfishes |
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Classe |
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Teleostei |
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Ordre frère |
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Beryciformes 70 M years |
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Réf. |
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Premier signalement fossile |
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Présent dans |
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Marin |
Eau douce |
Saumâtre |
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Remarque |
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Moderately elongate and compressed. A pair of barbels on hyoid. Continuous dorsal fin; 4-6 spines, 26-38 soft rays. Anal fin 4 short spines, 13-17 soft rays. Subabdominal pelvic fin; 1 spinelike ray, 6 soft rays. Caudal fin 16 branched rays. Scales in lateral line about 33-38. Banchiostegal 4 rays. Gillrakers 11-21. Supramaxillae 2. Epurals 3. Subocular shelf, ortbitosphenoid, and basisphenoid present. Vertebrae usually 29 or 30. Maximum length is 38 cm. Usually found in depths between 180 and 640 m. |
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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, poly = a lot of + Greek, myxo = mucus + Latin, forma = shape (Ref. 45335). |
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Familles |
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( n = 1 ) - Polymixiidae |
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