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chondrichthyes
chondrichthyes
마지막 업데이트: 2016-11-30
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품질:
tout poisson de la super-classe des agnatha et des classes des chondrichthyes et des osteichthyes,
fish belonging to the superclass agnatha and to the classes chondrichthyes and osteichthyes;
마지막 업데이트: 2014-11-21
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품질:
ils apparaissent avec les placodermes, aujourd’hui disparus, mais leurs descendants les poissons cartilagineux ou chondrichthyes , sont des prédateurs redoutables.
these are the placoderms, nowadays extinct, but their descendants, the cartilaginous fishes ( chondrichthyes ) are active and most fearsome predators.
마지막 업데이트: 2018-02-13
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품질:
seasonal distribution of demersal fish (osteichthyes) and skates (chondrichthyes) in the southeastern gulf of st. lawrence, can.
seasonal distribution of demersal fish (osteichthyes) and skate (chondrichthyes) in the southeastern gulf of st. lawrence.
마지막 업데이트: 2015-05-14
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품질:
les fentes branchiales sont au nombre de 5; l’œil est ovale et n’a pas, tout comme les autres chondrichthyes, de membrane nictitante.
the branchial openings are five and the oval eye does not have, as in the other chondrichthyes, the nictitating membrane.
마지막 업데이트: 2018-02-13
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16. mise en œuvre de la résolution conf. 12.6 (rev. cop15) sur conservation et gestion des requins (classe chondrichthyes)
16. implementation of resolution conf.12.6 (rev. cop15) on conservation and management of sharks (class chondrichthyes)
마지막 업데이트: 2018-02-13
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품질:
== classification ==selon itis les vertébrés comprennent :* infra-embranchement agnatha** classe cephalaspidomorphi** classe myxini* infra-embranchement gnathostomata** super-classe chondrichthyes** super-classe osteichthyes*** classe actinopterygii*** classe sarcopterygii** super-classe tetrapoda*** classe amphibia*** classe aves*** classe mammalia*** classe reptilia== phylogénie ==* deutérostomiens** xénambulacraires** chordés*** céphalochordés*** olfactores**** urochordés**** crâniés***** myxinoïdés (myxines)***** vertébrés****** pétromyzontides (lamproies)****** gnathostomes (vertébrés à mâchoires)******* chondrichthyens (ou poissons cartilagineux)******* ostéichthyens (poissons osseux)******** actinoptérygiens (poissons à nageoires rayonnées)******** sarcoptérygiens (poissons à nageoires charnues et vertébrés à pattes)********* actinistiens (cœlacanthe)********* rhipidistiens********** dipneustes********** tétrapodes*********** lissamphibiens (batraciens et gymnophiones)*********** amniotes************ sauropsides************* anapsides ou chéloniens (tortues)************* diapsides************** lépidosauriens*************** squamates (lézards et serpents)*************** sphénodontiens************** archosauriens (incluent également les dinosaures)*************** crocodiliens*************** oiseaux************ synapsides************* mammifères== État des populations, pressions, réponses ==selon l'onu, de nombreuses populations sauvages de vertébrés sont menacées (ou ont récemment disparu).
" (2003), and benton (2004) is given here:* subphylum vertebrata*** superclass agnatha or cephalaspidomorphi (lampreys and other jawless fishes)** infraphylum gnathostomata (vertebrates with jaws)**** class †placodermi (extinct armoured fishes)**** class chondrichthyes (cartilaginous fishes)**** class †acanthodii (extinct spiny "sharks")*** superclass osteichthyes (bony fishes)**** class actinopterygii (ray-finned bony fishes)**** class sarcopterygii (lobe-finned fishes, some ancestral to tetrapods)*** superclass tetrapoda (four-limbed vertebrates)**** class amphibia (amphibians, some ancestral to the amniotes)**** class †synapsida (extinct mammal-like "reptiles", some ancestral to mammals, sometimes classed with reptilia)**** class reptilia (reptiles, some ancestral to birds)**** class aves (birds)**** class mammalia (mammals)while this traditional classification is orderly, most of the groups are paraphyletic, i.e.
마지막 업데이트: 2016-03-03
사용 빈도: 1
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