- order Anaspida
- nounextinct order of jawless vertebrates• Syn: ↑Anaspida• Hypernyms: ↑animal order• Member Holonyms: ↑Agnatha, ↑superclass Agnatha• Member Meronyms: ↑anaspid
Useful english dictionary. 2012.
order Anaspida
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Anaspida — noun extinct order of jawless vertebrates • Syn: ↑order Anaspida • Hypernyms: ↑animal order • Member Holonyms: ↑Agnatha, ↑superclass Agnatha • Member Meronyms: ↑ … Useful english dictionary
animal order — noun the order of animals • Hypernyms: ↑order • Hyponyms: ↑Eubacteriales, ↑order Eubacteriales, ↑Pseudomonadales, ↑order Pseudomonadales, ↑Rickettsiales, ↑order … Useful english dictionary
anaspid — noun extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian • Hypernyms: ↑jawless vertebrate, ↑jawless fish, ↑agnathan • Member Holonyms: ↑Anaspida, ↑order Anaspida * * *… … Useful english dictionary
Agnatha — noun superclass of eel shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms • Syn: ↑superclass Agnatha • Hypernyms: ↑class • Member Holonyms: ↑Vertebrata, ↑subphylum Vertebrata, ↑ … Useful english dictionary
superclass Agnatha — noun superclass of eel shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms • Syn: ↑Agnatha • Hypernyms: ↑class • Member Holonyms: ↑Vertebrata, ↑subphylum Vertebrata, ↑ … Useful english dictionary
anaspid — /euh nas pid/, n. Paleontol. any member of an extinct order, Anaspida, of small, freshwater jawless fishes of the Silurian and Devonian periods, characterized by a single nostril, narrow rows of scales, and, usually, an armor plated head. [ < NL… … Universalium
fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with … Universalium
Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… … Universalium
agnathan — /ag neuh theuhn/, n. 1. any member of the vertebrate class Agnatha. adj. 2. agnathous. [AGNATH(A) + AN] * * * ▪ fish Introduction any member of the group of primitive, jawless fishes (fish) that includes the lampreys (lamprey) (order… … Universalium
Chordate — Chordata Temporal range: Early Cambrian – Recent, 540–0 Ma … Wikipedia
