agnatha

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الإنجليزية - التركية
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الإنجليزية - الإنجليزية
{i} class of vertebrates that have no jaws or paired limbs (including lampreys, hagfishes, etc.)
any of several eellike marine or freshwater fish, of the superclass Agnatha, that lack a jaw
superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms