order ostracodermi
English Thesaurus
1. extinct group of armored jawless vertebrates; taxonomy is not clear (noun.animal)
| hypernym | : | animal order, |
| definition | : | the order of animals (noun.animal) |
| member holonym | : | ostracoderm, |
| definition | : | extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic (noun.animal) |
| member meronym | : | agnatha, superclass agnatha, |
| definition | : | superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms (noun.animal) |
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