758 
Order 
Classification of Fishes 
HYPEROARTIA 
Petromyzonide (Lampreys) 
Mordaciidze 
Class ELASMOBRANCHII 
Subclass SELACHII 
Order 
Order 
Order 
PLEUROPTERYGII 
Cladoselachide 
ACANTHODEI 
Acanthoesside 
Diplacanthide 
Ischnacanthide 
ICHTHYOTOMI 
Pleuracanthide 
Order NOTIDANI 
Order 
Order 
Order 
Hexanchide (Cow-sharks) 
Chlamydoselachide (Frill-sharks) 
CESTRACIONTES 
Cochliodontide 
Hybodontide 
Orodontide 
Heterodontidz (Bull-head Sharks) 
Psammodontide 
Tamiobatide 
ASTEROSPONDYLI (GALEOIDEI) 
Scylliorhinide (Cat-sharks) 
Hemiscylliide 
Orectolobidz 
Ginglymostomide (Nurse-sharks) 
Odontaspidide (Sand-sharks) 
Mitsukurinide (Goblin-sharks) 
Alopiidz (Threshers) 
Pseudotriakide 
Lamnide (Man-eater Sharks) 
Cetorhinide (Basking-sharks) 
Rhineodontide 
Carchariide (Common Sharks) 
Sphyrnidz (Hammer-head Sharks) 
TECTOSPONDYLI (SQUALOIDE]I) 
Squalide (Dog-fishes) 
Dalatiide 
Echinorhinide (Bramble-sharks) 
