superclass agnatha
English Thesaurus
1. superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms (noun.animal)
| hypernym | : | class, |
| definition | : | (biology) a taxonomic group containing one or more orders (noun.group) |
| member holonym | : | agnathan, jawless fish, jawless vertebrate, |
| definition | : | eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms (noun.animal) |
| member holonym | : | order ostracodermi, ostracodermi, |
| definition | : | extinct group of armored jawless vertebrates; taxonomy is not clear (noun.animal) |
| member holonym | : | anaspida, order anaspida, |
| definition | : | extinct order of jawless vertebrates (noun.animal) |
| member holonym | : | conodonta, conodontophorida, order conodonta, order conodontophorida, |
| definition | : | extinct order of primitive vertebrates; the precise taxonomy is not clear; in some classifications considered a separate phylum (noun.animal) |
| member holonym | : | cyclostomata, order cyclostomata, |
| definition | : | primitive jawless aquatic vertebrate: lampreys; hagfishes (noun.animal) |
| member meronym | : | craniata, subphylum craniata, subphylum vertebrata, vertebrata, |
| definition | : | fishes; amphibians; reptiles; birds; mammals (noun.animal) |
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