cyclostome

• Nom désignant un vertébré aquatique primitif appartenant à la classe des cyclostomes, caractérisé par une bouche ronde dépourvue de mâchoires et un squelette cartilagineux.

A noun referring to a primitive aquatic vertebrate belonging to the class Cyclostomata, characterized by a round, jawless mouth and a cartilaginous skeleton.

1. Primitive aquatic vertebrateC2formalscientific

   A member of a group of jawless, eel-like aquatic vertebrates that includes lampreys and hagfish.

   Cyclostome

   • The cyclostome is considered one of the most primitive living vertebrates.
   • Lampreys and hagfish are the only surviving examples of cyclostomes.
   • Scientists study cyclostomes to understand the evolution of vertebrate jaws.

   Synonymesagnathanjawless fishjawless vertebrate