Order Summary for Pristiophoriformes
Main Ref
:
Order
:
Pristiophoriformes saw sharks
Class
:
Elasmobranchii
Sister Order
:
Pristiformes 145 M years
Ref.
:
First Fossil Record
:
late Jurassic
Occurs in
:
Marine
Fresh
Brackish
Remark
:
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.
Class etymology
:
Greek eulanein, elasmos = metal beaten out + Greek brangchia = gills. Ref. 45335.
Order etymology
:
Greek, pristis, -eos = a kind of shark + Latin ferre = to carry + Latin, forma = shape (Ref. 45335).
Families
:
( n = 1 )
Pristiophoridae


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

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