title: Billingsellida
text: # Billingsellida
  
  An order of brachiopods containing the families:
  
  * Suborder Billingsellidina
     * Superfamily Billingselloidea
        * Family Billingsellidae
  * Suborder Clitambonitidina
     * Superfamily Clitambonitoidea
        * Family Clitambonitidae
        * Family Gonambonitidae
     * Superfamily Polytoechioidea
        * Family Polytoechiidae
  