Agnatha


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Related to Agnatha: Osteichthyes
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Agnatha - superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreysAgnatha - superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms
Craniata, subphylum Craniata, subphylum Vertebrata, Vertebrata - fishes; amphibians; reptiles; birds; mammals
agnathan, jawless fish, jawless vertebrate - eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms
order Ostracodermi, Ostracodermi - extinct group of armored jawless vertebrates; taxonomy is not clear
Anaspida, order Anaspida - extinct order of jawless vertebrates
Conodonta, Conodontophorida, order Conodonta, order Conodontophorida - extinct order of primitive vertebrates; the precise taxonomy is not clear; in some classifications considered a separate phylum
Cyclostomata, order Cyclostomata - primitive jawless aquatic vertebrate: lampreys; hagfishes
class - (biology) a taxonomic group containing one or more orders
References in periodicals archive ?
Thus, for the aquaporin superfamily the occurrence of a second round of WGD after the separation of Gnathostomata from Agnatha would provide a parsimonious explanation for the divergent numbers of subfamiles in these lineages.
The gorgeous, rebellious Prince Beau loves strong-willed healer Agnatha, and with the help of an all-powerful godling, the two may find the happiness each deserves.