Order Summary for Orectolobiformes
Main Ref
:
Order
:
Orectolobiformes carpet sharks
Class
:
Elasmobranchii
Sister Order
:
Carchariniformes 155 M years
Ref.
:
First Fossil Record
:
late Jurassic
Occurs in
:
Marine
Fresh
Brackish
Remark
:
Two dorsal fins, without spines; mouth very short, confined to being well in front of eyes; nostrils specialized, with prominent nasoral grooves wit barbels in most; spiracles too large, below the eye except in Rhincodon; many with small gill slits and with fifth slit overlapping the fourth behind the origin of pectoral fin.
Class etymology
:
Greek eulanein, elasmos = metal beaten out + Greek brangchia = gills. Ref. 45335.
Order etymology
:
Greek, orektos = lengthened, prolongued + Greek, lobos = lobe + Latin, forma = shape (Ref. 45335).
Families
:


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

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