Ichthyology 425--Orders and higher taxa Phylum Chordata Craniata Subphylum Petromyzontiformes Lepidosireniformes Coelacanthiformes Cyprinodontiformes Gasterosteiformes Acipenseriformes Pleuronectiformes Tetraodontiformes Lepisosteiformes Scorpaeniformes Chimaeriformes Myliobatiformes Polypteriformes Hiodontiformes Salmoniformes Percopsiformes Atheriniformes Myxiniformes Anguilliformes Characiformes Squaliformes Lamniformes Clupeiformes Cypriniformes Esociformes Lophiiformes Rajiformes Amiiformes Elopiformes Siluriformes Gadiformes Perciformes Gnathostomata Superclass ? Class Myxini Cephalaspid- omorphi Placodermi Chondrichthyes Acanthodii Osteichthyes ? Actinoptergyii Subclass Holocephali Sarcopterygii Elasmobranchii Division Teleostei Superorder Ostariophysi Acanthopterygii 6 7 8 9 10 11 lab

Pacific hagfish end

Pacific hagfish end

chestnut lamprey end

sea lamprey end

ostracoderms end

placoderms end

chimaeras and ratfishes end

angel shark end

spiny dogfish end

white shark end

nurse shark end

sand tiger shark end

blue shark end

shark teeth end

shark teeth end

hammerhead sharks end

eagle ray end

ray egg cases end

ray embryos end

little skate end

Atlantic stingray end

Acanthodii--Climatius end

African lungfishes end

coelacanth end

bichirs end