jawless vertebrate

• Termo científico que designa um grupo de animais vertebrados primitivos, sem mandíbulas, como as lampreias e os mixinas, pertencentes à superclasse dos agnatos (ou ciclóstomos).

A scientific term referring to a group of primitive fish-like animals that lack jaws, such as lampreys and hagfish, belonging to the superclass Agnatha.

1. AgnathanC2formal

   A member of the superclass Agnatha, comprising primitive fish-like vertebrates that lack jaws.

   Vertebrado sem mandíbula

   • Lampreys and hagfish are the only surviving examples of jawless vertebrates.
   • Fossil records show that jawless vertebrates were among the earliest chordates.
   • The study of jawless vertebrates helps scientists understand the evolution of the vertebrate skeleton.