228 Appendix A
Leptochariidae (Barbeled Houndshark)
Triakidae (houndsharks)
Hemigaleidae (weasel sharks)
Carcharhinidae (requiem sharks)
Sphyrnidae (hammerhead sharks)
Superorder Squalomorphi
Order Hexanchiformes (5 species, marine):
Chlamydoselachidae (Frill Shark)
Hexanchidae (cow sharks)
Order Echinorhiniformes (2 species, marine):
Echinorhinidae (bramble sharks)
Order Squaliformes (97 species, marine):
Squalidae (dogfish sharks)
Centrophoridae (gulper sharks)
Etmopteridae (lantern sharks)
Somniosidae (sleeper sharks)
Oxynotidae (rough sharks)
Dalatiidae (kitefin sharks)
Order Squatiniformes (15 species, marine):
Squatinidae (angel sharks)
Order Pristiophoriformes (5 species, marine):
Pristiophoridae (saw sharks)
Subdivision Batoidea (skates and rays)
Order Torpediniformes (59 species, marine):
Torpedinidae (torpedo electric rays)
Narcinidae (numbfishes)
Order Pristiformes (7 species, marine and freshwater):
Pristidae (sawfishes)
Order Rajiformes (285 species, marine):
Rhinidae (bowmouth guitarfishes)
Rhynchobatidae (wedgefishes)
Rhinobatidae (guitarfishes)
Rajidae (skates)
Order Myliobatiformes (183 species, marine and freshwater):
Platyrhinidae (thornbacks)
Zanobatidae (Striped Panray)
Hexatrygonidae (Sixgill Stingray)
Plesiobatidae (Deepwater Stingray)
Urolophidae (round stingrays)
Urotrygonidae (American round stingrays)
Dasyatidae (whiptail stingrays)
Potamotrygonidae (river stingrays)
Gymnuridae (butterfly rays)
Rhinopteridae (cownose rays)
Mobulidae (manta rays, mobulas)
Subclass Holocephali
Superorder Holocephalimorpha (6 extinct orders and modern
chimaeras)
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