Order Summary for Echiuroidea

  Main Ref.
:
  Order
:
Echiuroidea
  Class
:
Polychaeta
  Sister Order
:
  M years
  Ref.
:
 | 
  First Fossil Record
:
  Occurs in
:
Marine
Fresh
Brackish
  Remark
:
AphiaID=110342
  Class etymology
:
  Order etymology
:
  Families
:

Ref.
[ e.g. 3742]                  
Glossary
                      [ e.g. cnidaria]