Agnatha
See also: agnatha
Translingual
editEtymology
editFrom Ancient Greek ἀ- (a-, “without”) + γνάθος (gnáthos, “jaw”).
Proper noun
editAgnatha
- The jawless fishes, or agnathans; they have backbones and skulls like the scaly fishes, and like reptiles, mammals and other vertebrates on land, but they do not have paired jaws like humans or sharks; instead their mouthparts are round; they suck onto their prey or food and rasp away bits that they then swallow.
- A taxonomic superclass within the subphylum Vertebrata.
- 1889, Edward Drinker Cope, “Synopsis of the Families of Vertebrata”, in The American Naturalist, volume 23 (in English), page 852:
- The known members of the class Agnatha are a very small representation of those that once existed; and they present a great variety of character, having little affinity with each other.
- 2007, Chad Thomas et al., Freshwater Fishes of Texas (in English), Texas A&M University Press, page 6:
- Current classification schemes have living fishes assigned to two superclasses (Agnatha, or jawless chordates, and Gnathostomata, or jawed chordates)[…].
- A taxonomic infraphylum within the subphylum Vertebrata.[1]
- A taxonomic superclass within the subphylum Vertebrata.
Hypernyms
edit- (superclass): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Deuterostomia – infrakingdom; Chordata – phylum; Chordata Craniata - clade
- (infraphylum): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Deuterostomia – infrakingdom; Chordata – phylum; Vertebrata - subphylum[1]
Hyponyms
edit- (subphylum): Myxini, †Cephalaspidomorphi, †Pteraspidomorphi - classes
- (infraphylum): Cyclostomata[1]
Coordinate terms
editDescendants
editSee also
editReferences
edit- Agnatha on Wikipedia.Wikipedia
- Agnatha on Wikispecies.Wikispecies
- Category:Agnatha on Wikimedia Commons.Wikimedia Commons
- Hyperotreti at the Tree of Life Web Project
- Agnatha at Paleobiology Database