Includes bibliographical references (p. 467-540) and index.

Phylum chordata -- Subphylum vertebrata (craniata) -- Superclass agnatha -- Class myxini -- Class pteraspidomorphi -- Class cephalaspidomorphi -- Superclass gnathostomata -- Class placodermi -- Class chondrichthyes -- Subclass holocephali -- Order chimaeriformes -- Subclass elasmobranchii -- Order heterodontiformes -- Order orectolobiformes -- Order carcharhiniformes -- Order lamniformes -- Order hexanchiformes -- Order squaliformes -- Order squatiniformes -- Order pristiophoriformes -- Order rajiformes -- Class acanthodii -- Class sarcopterygii -- Subclass coelacanthimorpha -- Order coelacanthiformes -- Subclass porolepimorpha and dipnoi -- Order ceratodontiformes -- Order lepidosireniformes -- Subclass rhizodontimorpha -- Subclass osteolepimorpha -- Subclass tetrapoda -- Class actinopterygii -- Subclass chrondrostei -- Order polypteriformes -- Order acipenseriformes -- Subclass neopterygii -- Order semionotiformes -- Order amiiformes -- Division teleostei -- Subdivision osteoglossomorpha -- Order osteoglossiformes -- Subdivision elopomorpha -- Order elopiformes. (cont) Order albuliformes -- Order anguilliformes -- Order saccopharyngiformes -- Subdivision clupeomorpha -- Order clupeiformes -- Subdivision euteleostei -- Superorder ostariophysi -- Order gonorhynchiformes -- Order cypriniformes -- Order characiformes -- Order siluriformes -- Order gymnotiformes -- Superorder protacanthopterygii -- Order esociformes -- Order osmeriformes -- Order salmoniformes -- Superorder stenopterygii -- Order stomiiformes -- Order ateleopodiformes -- Superorder cyclosquamata -- Order aulopiformes -- Superorder scopelomorpha -- Order myctophiformes -- Superorder lampridiomorpha -- Order lampridiformes -- Superorder polymixiomorpha -- Order polymixiformes -- Superorder paracanthopterygii -- Order percopsiformes -- Order ophidiiformes -- Order gadiformes -- Order batrachoidiformes -- Order lophiiformes -- Superorder acanthopterygii -- Series mugilomorpha -- Order mugiliformes -- Series atherinomorpha -- Order atheriniformes -- Order beloniformes -- Order cyprinodontiformes -- Series percomorpha -- Order stephanoberyciformes. (cont) Order beryciformes -- Order zeiformes -- Order gasterosteiformes -- Order synbranchiformes -- Order scorpaeniformes -- Order perciformes -- Order pleuronectiformes -- Order tetraodontiformes -- Checklist of the classes (numbered), extant subclasses (not numbered), extant orders (numbered), extant suborders (not numbered), and extant families (numbered). All cross-referenced to appropriate page numbers.