Agnathan

//ˈæɡ.nə.θən// adj, noun

Definitions

Adjective
  1. 1
    Belonging or pertaining to the superclass Agnatha, the jawless vertebrates. not-comparable

    "Haikouichthys is one of three species of jawless (or agnathan) fish to be found in the Early Cambrian period."

Noun
  1. 1
    A member of the superclass Agnatha of jawless vertebrates.

    "Thus should the cranial neural crest in cyclostomes prove to be non-skeletogenous this might be a reflection either of its own primitiveness or of the different evolutionary origins and morphological status of the visceral skeleton in agnathans and gnathostomes."

  2. 2
    eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms wordnet

Etymology

Etymology 1

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

Etymology 2

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

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