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Vertebrates (Fishes) (Superclass AGNATHA (Ostracoderm Group (#) (Class…
Vertebrates (Fishes)
Superclass AGNATHA
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gill openings pores, not slits
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Superclass GNATHOSTOMATA
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Grade Chondricthiomorphi
Class Chondricthyes
Subclass Holocelphali
Order Chimaeriformes
Chimeras, the "ratfishes"
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Subclass Elasmobranchii
Superorder Euselachiil
Squalea
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Order Squaliformes
Dogfish sharks, sleeper sharks
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Galeomorpha
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Order Orelectolobiformes
Carpet sharks, whale sharks
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Ceratotricha -
Soft, unsegmented fin rays
Placoid Scales, Internal Fert., Spiral Valve Intestine
Grade Teleostomi
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Class Sarcopterygii
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Subclass Dipnoi
Order Lepidosireniformes
all others, use lungs for gas exchange
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Class Actinopterygii
Subclass Chrondrostei
Order Acipenseriformes
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Ganoid Scales, Spiral valve intestine
Order Polypteriformes
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ganoid scales, spiral valve
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Subclass Neopterygii
Division Teleostei
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Subdivision Euteleostei
Superorder Ostariophysi
Order Gonorhychiformes
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Order Cypriniformes
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Order Characiformes
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Order Siluriformes
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Order Gynotiformes
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Weberian Apparatus, Shrekstoff
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Superorder Stenopterygii
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Order Stomiliformes
Lightfishes, viperfish, hatchetfish +
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Superorder Cyclosquamata
Order Aulopiformes
Barracuda, lancetfish, spiderfish +
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# of fin rays = supports
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most ganoid scales, first cycloid scale in Amiiformes
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