title: Prioniodinida
text: # Prioniodinida
  
  Prioniodinida is an extinct order of conodonts, a jawless vertebrate.
  
  ## Families
  
  Families are:
  
  * †Bactrognathidae
  * †Chirognathidae
  * †Ellisoniidae
  * †Gondolellidae
  * †Prioniodinidae
  