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Research Home
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Holocephali (class) (Vertebrata (subphylum), Chordata (phylum), ... Living Organisms (hierarchy name)) |
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Note: Class of vertebrate shark-like aquatic animals characterized by having no scales, four gill pairs under one gill opening on each side, an erectile dorsal fin, in using claspers to accomplish internal fertilization of females, laying eggs with leathery cases, differing from sharks in having upper jaws that are fused to the braincase, separate anal and urogenital openings, and a few large permanent grinding tooth plates instead of teeth. In some classifications, they are included in the same class with rays and sharks.
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| Terms: |
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| Holocephali (class) (preferred,C,U,S,English-P,D,L,N)
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| Holocephali (class) (Latin-P,D,U,N)
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| Holocephali (klasse) (Dutch-P,D,U,U)
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| ghost sharks (C,U,C,English,AD,U,N)
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| ghost shark (C,U,English,AD,U,N)
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| ratfish (Holocephali family) (C,U,English,UF,U,N)
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| rabbitfish (C,U,English,UF,U,N)
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| 全頭亞綱 (綱) (C,U,Chinese (traditional)-P,D,U,U)
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| 全頭綱 (C,U,Chinese (traditional),UF,U,U)
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| quán tóu yǎ gāng (C,U,Chinese (transliterated Hanyu Pinyin)-P,UF,U,U)
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| quan tou ya gang (C,U,Chinese (transliterated Pinyin without tones)-P,UF,U,U)
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| ch'üan t'ou ya kang (C,U,Chinese (transliterated Wade-Giles)-P,UF,U,U)
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Facet/Hierarchy Code: H.HL |
Hierarchical Position:
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Agents Facet |
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.... Living Organisms (hierarchy name) (G) |
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........ living organisms (entities) (G) |
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............ Eukaryota (domain) (G) |
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................ Animalia (kingdom) (G) |
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.................... Chordata (phylum) (G) |
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........................ Vertebrata (subphylum) (G) |
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............................ Holocephali (class) (G) |
Additional Notes: |
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| Chinese (traditional) ..... 類似鯊魚的水生脊椎動物；特徵為無鱗，鰓裂四對，背部有一豎立的鰭，利用交接器完成雌性體內受精，所產下的卵有著皮革般的卵囊。與鯊魚的差異在於，全頭綱動物的上頜骨與頭顱俞合，肛門與泌尿口獨立分開，不具牙齒，而是數個用來碾磨食物的長久性牙床。某些分類法將牠們與魟魚及鯊魚歸類於同一綱。 |
| Dutch ..... Klasse van gewervelde, haaiachtige waterdieren die geen schubben hebben. De dieren hebben vier kieuwparen onder één kieuwopening aan beide zijden en een erectiele rugvin. De mannetjes hebben een grijporgaan voor de interne bevruchting van de vrouwtjes, die eieren leggen met leerachtige schalen. In tegenstelling tot haaien hebben ze een bovenkaak die vastzit aan de hersenschedel, aparte anale en urogenitale openingen en enkele grote permanente tandplaten waarmee ze voedsel vermalen, in plaats van tanden. In sommige classificaties zijn ze opgenomen in dezelfde klasse als roggen en haaien. |
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Sources and Contributors: |
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