Ordre Résumé for Gadiformes

  Réf. Princ.
:
  Ordre
:
Gadiformes cods
  Classe
:
Actinopterygii
  Ordre frère
:
Batrachoidiformes 20 M years
  Réf..
:
  Premier signalement fossile
:
middle Tertiary
  Présent dans
:
Marin
Eau douce
Saumâtre
  Remarque
:
Pelvic fins, when present, inserted below or in front of pectorals (thoracic or jugular, rarely behind in Macrouridae) with up to 11 rays; no true spines in the fins; most with long dorsal and anal fins; scales usually cycloid, rarely ctenoid; premaxilla forms the entire margin of upper jaw, protractile in some; ectopterygoid toothless; orbitosphenoid and basisphenoid absent; branchiostegal rays 6-8; posterior vertebral reduction results in posterior dorsal and anal pterygiophores exceeding the number of caudal vertebrae; swim bladder without pneumatic duct (the swim bladder is absent in Melanonus and Squalogadus).
  ClasseÉtymologie
:
Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335.
  OrdreÉtymologie
:
Latin gadus = cod, 1889 + Latin, forma = shape (Ref. 45335).
  Familles
:

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

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