order conodontophorida

English Thesaurus

1. extinct order of primitive vertebrates; the precise taxonomy is not clear; in some classifications considered a separate phylum (noun.animal)

hypernym	:	animal order,
definition	:	the order of animals (noun.animal)

member holonym	:	conodont,
definition	:	small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes (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)