Ordre Résumé for Pristiophoriformes

  Réf. Princ.
:
  Ordre
:
Pristiophoriformes saw sharks
  Classe
:
Elasmobranchii
  Ordre frère
:
Pristiformes 145 M years
  Réf..
:
  Premier signalement fossile
:
late Jurassic
  Présent dans
:
Marin
Eau douce
Saumâtre
  Remarque
:
Body sharklike; snout produced in a long flat blade with teeth on each side (teeth unequal in size, usually alternating large and small, and weakly embedded); one pair of long barbels; no dorsal fin spines (sometimes present as internal rudiments); anal fin absent; spiracles large. Maximum length 1.4 m.
  ClasseÉtymologie
:
Greek eulanein, elasmos = metal beaten out + Greek brangchia = gills. Ref. 45335.
  OrdreÉtymologie
:
Greek, pristis, -eos = a kind of shark + Latin ferre = to carry + Latin, forma = shape (Ref. 45335).
  Familles
:
( n = 1 ) -
Pristiophoridae

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

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