agnath

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English[edit]

Etymology[edit]

From Agnatha, from Ancient Greek ἀ- (a-, without) + γνάθος (gnáthos, jaw).

Noun[edit]

agnath (plural agnaths)

  1. (zoology) An agnathan.
    • 1979, Stephen C. Wood, Evolution of Respiratory Processes, Marcel Dekker, ISBN 0-8247-6793-4, page 218:
      Evolution of vertebrates was accompanied by a gradual increase in oxygen availability, from the irrespirable atmosphere of the Precambrian to a PO₂ at 7 mmHg with the first vertebrates (agnaths), to the present sea level PO₂ value of 160 mmHg with the first reptiles.
    • 1996, George Christopher Williams, Adaptation and Natural Selection, Princeton University Press, ISBN 0-691-02615-7, page 51:
      The gnathostomes almost entirely replaced the agnaths, presumably because they were more effective fishes.
    • 2002, Harold J. Morowitz, The Emergence of Everything, Oxford University Press, ISBN 0-19-513513-X, page 113:
      Thus, although tunicates are presumably intermediate between flatworms and agnaths, the larval tunicate more closely resembles the flatworm and adult agnath.

German[edit]

Etymology[edit]

Ancient Greek ἀ- (a-, without) + γνάθος (gnáthos, jaw)

Adjective[edit]

agnath (not comparable)

  1. (zoology) jawless
    • 1895, H. Henking, “Ueber die Ernährung von Glandina algira L.”, Zoologische Jahrbücher, volume 8, page 87:
      Da die Testacelliden agnath sind, so vermögen sie sich ihrer Beute nur mit Hülfe der Radula zu bemächtigen, indem diese etwas vorgestülpt wird, um ein Eingreifen der Radula-Zähne zu ermöglichen.
    • 1906, “Pisces für 1902”, Archiv für Naturgeschichte, volume 2, issue 1, page 15
      Erörterung der Frage, ob die Ostracodermen agnath oder gnathostom sind.
    • 2004, Rüdiger Wehner and Walter Gehring, Zoologie, twenty-fourth edition, Thieme, ISBN 978-3-13-367424-9, page 809:
      Hypothetisches Ausgangsstadium (agnathes Wirbeltier) mit gleichförmigen Branchialbögen (Kieferbögen).

Declension[edit]

Synonyms[edit]