Order Summary for Synbranchiformes

  Main Ref
:
  Order
:
Synbranchiformes spiny eels
  Class
:
Teleostei
  Sister Order
:
Scorpaeniformes 15 M years
  Ref.
:
  First Fossil Record
:
late Tertiary
  Occurs in
:
Marine
Fresh
Brackish
  Remark
:
Body elongate; pelvic fins absent; gill openings confined to lower half of body; ectopterygoid enlarged; mesopterygoid reduced or absent; premaxillary nonprotrusible and without ascending process. All species except three occur in freshwater.
  Class etymology
:
Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335.
  Order etymology
:
Greek, syn = together, adhesion + Greek, brangchia = gills + Latin, forma = shape (Ref. 45335).
  Families
:

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Ref.
[ e.g. 9948]                       
Glossary
                    [ e.g. cephalopods]

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