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Classification By Shark Body Type

 

 

Chart of body shapes for classifying sharks.
Category 1. No Anal Fins

Flat body ray-like: Squantiniformes

Not ray-like with elongated snout: Pristiophoriformes

Not ray-like with short snout: Squaliformes


Category 2. Anal Fins

1 Dorsal fin, 6 to 7 gill slits: Hexanchiformes

2 Dorsal fins, 5 gill slits, no fin spines, mouth behind front of eyes,
   nictitating eyelids: Carcharhiniformes

2 Dorsal fins, 5 gill slits, no fin spines, mouth behind front of eyes, no
   nictitating eyelids: Lamniformes

2 Dorsal fins, 5 gill slits, no fin spines, mouth in front of eyes:
   Orectolobiformes

2 Dorsal fins, 5 gill slits, dorsal fin spines: Heterodontiformes

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