Taxonomy of the animals (Hutchins et al., 2003)

The taxonomy of the animals presented by Hutchins et al. in 2003 in Grzimek's Animal Life Encyclopedia is a system of classification which covers all the metazoans, from phyla to orders (or families, for Hexapoda and Pisces, or species, for Amphibia, Reptilia, Aves and Mammalia).

Phylum Porifera

 * Phylum Porifera
 * Class Calcarea
 * Order Baeriida
 * Order Clathrinida
 * Order Leucosoleniida
 * Order Lithonida
 * Order Murrayonida
 * Class Hexactinellida
 * Order Amphidiscosida
 * Order Aulocalycoida
 * Order Hexactinosida
 * Order Lychniscosida
 * Order Lyssacinosida
 * Class Demospongiae
 * Order Agelasida
 * Order Astrophorida
 * Order Chondrosida
 * Order Dendroceratida
 * Order Dictyoceratida
 * Order Hadromerida
 * Order Halichondrida
 * Order Halisarcida
 * Order Haplosclerida
 * Order Homosclerophorida
 * Order Poecilosclerida
 * Order Spirophorida
 * Order Verongida
 * Order Verticillitida

Phylum Placozoa

 * Phylum Placozoa
 * No order designations

Phylum Monoblastozoa

 * Phylum Monoblastozoa
 * No order designations

Phylum Rhombozoa

 * Phylum Rhombozoa
 * Order Dicyemida
 * Order Heterocyemida

Phylum Orthonectida

 * Phylum Orthonectida
 * Order Orthonectida

Phylum Cnidaria

 * Phylum Cnidaria
 * Class Anthozoa
 * Order Actiniaria
 * Order Alcyonacea
 * Order Antipatharia
 * Order Ceriantharia
 * Order Corallimorpharia
 * Order Helioporacea
 * Order Pennatulacea
 * Order Scleractinia
 * Order Zoanthidea
 * Class Hydrozoa
 * Order Actinulida
 * Order Capitata
 * Order Conica
 * Order Cystonectae
 * Order Filifera
 * Order Laingiomedusae
 * Order Limnomedusae
 * Order Moerisiida
 * Order Narcomedusa
 * Order Proboscoida
 * Order Physonectae
 * Order Polypodiozoa
 * Order Trachymedusa
 * Class Cubozoa
 * Order Cubomedusae
 * Class Scyphozoa
 * Order Coronatae
 * Order Rhizostomeae
 * Order Semaeostomeae
 * Order Stauromedusae

Phylum Ctenophora

 * Phylum Ctenophora
 * Order Beroida
 * Order Cestida
 * Order Cydippida
 * Order Ganeshida
 * Order Lobata
 * Order Platyctenida
 * Order Thalassocalycida

Phylum Platyhelminthes

 * Phylum Platyhelminthes
 * Class Acoela
 * No order designations
 * Class Turbellaria
 * Order Catenulida
 * Order Haplopharyngida
 * Order Lecithoepitheliata
 * Order Macrostomida
 * Order Polycladida
 * Order Prolecithophora
 * Order Proplicastomata
 * Order Proseriata
 * Order Rhabdocoela
 * Order Tricladida
 * Class Trematoda
 * Order Aspidogastrida
 * Order Azygiida
 * Order Echinostomida
 * Order Opisthorchiida
 * Order Plagiorchiida
 * Order Strigeatida
 * Class Monogenea
 * Order Monopisthocotylea
 * Order Polyopisthocotylea
 * Class Cestoda
 * Order Amphilinidea
 * Order Caryophyllidea
 * Order Cyclophyllidea
 * Order Diphyllidea
 * Order Gyrocotylidea
 * Order Haplobothriidea
 * Order Lecanicephalidea
 * Order Litobothriidea
 * Order Nippotaeniidea
 * Order Proteocephalidea
 * Order Pseudophyllidea
 * Order Spathebothriidea
 * Order Tetrabothriidea
 * Order Tetraphyllidea
 * Order Trypanorhyncha

Phylum Nemertea

 * Phylum Nemertea
 * Class Anopla
 * Order Heteronemertea
 * Order Palaeonemertea
 * Class Enopla
 * Order Hoplonemertea

Phylum Rotifera

 * Phylum Rotifera
 * Order Bdelloida
 * Order Collothecacea
 * Order Flosculariacea
 * Order Ploimida
 * Order Seisonida

Phylum Gastrotricha

 * Phylum Gastrotricha
 * Order Chaetonotida
 * Order Macrodasyida

Phylum Kinorhyncha

 * Phylum Kinorhyncha
 * Order Cyclorhagida
 * Order Homalorhagida

Phylum Nematoda

 * Phylum Nematoda
 * Class Adenophorea
 * Order Araeolaimida
 * Order Chromadorida
 * Order Desmodorida
 * Order Desmoscolecida
 * Order Dorylaimida
 * Order Enoplida
 * Order Isolaimida
 * Order Mermithida
 * Order Monhysterida
 * Order Mononchida
 * Order Muspiceida
 * Order Stichosomida
 * Order Trichocephalida
 * Class Secernentea
 * Order Aphelenchida
 * Order Ascaridida
 * Order Camallanida
 * Order Diplogasterida
 * Order Rhabditida
 * Order Spirurida
 * Order Strongylida
 * Order Tylenchida

Phylum Nematomorpha

 * Phylum Nematomorpha
 * Order Gordioidea
 * Order Nectonematoidea

Phylum Acanthocephala

 * Phylum Acanthocephala
 * Order Apororhynchida
 * Order Echinorhynchida
 * Order Gigantorhynchida
 * Order Gyracanthocephala
 * Order Moniliformida
 * Order Neoechinorhynchida
 * Order Oligacanthorhynchida
 * Order Polymorphida

Phylum Entoprocta

 * Phylum Entoprocta
 * Order Coloniales
 * Order Solitaria

Phylum Micrognathozoa

 * Phylum Micrognathozoa
 * Order Limnognathida

Phylum Gnathostomulida

 * Phylum Gnathostomulida
 * Order Bursovaginoidea
 * Order Filospermoidea

Phylum Priapulida

 * Phylum Priapulida
 * Order Halicryptomorphida
 * Order Priapulimorphida
 * Order Seticoronarida

Phylum Loricifera

 * Phylum Loricifera
 * Order Nanaloricida

Phylum Cycliophora

 * Phylum Cycliophora
 * Order Symbiida

Phylum Echinodermata

 * Phylum Echinodermata
 * Class Crinoidea
 * Order Bourgueticrinida
 * Order Comatulida
 * Order Cyrtocrinida
 * Order Isocrinida
 * Order Millericrinida
 * Class Asteroidea
 * Order Brisingida
 * Order Forcipulatida
 * Order Notomyotida
 * Order Paxillosida
 * Order Spinulosida
 * Order Valvatida
 * Order Velatida
 * Class Concentricycloidea
 * Order Peripodida
 * Class Ophiuroidea
 * Order Euryalida
 * Order Oegophiurida
 * Order Ophiurida
 * Class Echinoidea
 * Order Arbacioida
 * Order Cassiduloida
 * Order Cidaroida
 * Order Clypeasteroida
 * Order Diadematoida
 * Order Echinoida
 * Order Echinothuroida
 * Order Holasteroida
 * Order Holectypoida
 * Order Pedinoida
 * Order Phymosomatoida
 * Order Salenoida
 * Order Spatangoida
 * Order Temnopleurida
 * Class Holothuroidea
 * Order Apodida
 * Order Aspidochirotida
 * Order Dactylochirotida
 * Order Dendrochirotida
 * Order Elasipodida
 * Order Molpadiida

Phylum Chaetognatha

 * Phylum Chaetognatha
 * Order Aphragmophora
 * Order Phragmophora

Phylum Hemichordata

 * Phylum Hemichordata
 * Order Cephalodiscida
 * Order Rhabdopleurida

Phylum Chordata

 * Phylum Chordata
 * Subphylum Urochordata
 * Class Ascidiacea
 * Order Enterogona
 * Order Pleurogona
 * Class Thaliacea
 * Order Doliolida
 * Order Pyrosomatida
 * Order Salpida
 * Class Appendicularia
 * Order Copelata
 * Class Sorberacea
 * Order Aspiraculata
 * Subphylum Cephalochordata
 * Order Amphioxiformes
 * Subphylum Craniata

Superclass Pisces

 * Superclass Pisces (polyphyletic)
 * Class Myxini
 * Order Myxiniformes
 * Class Cephalaspidomorphi
 * Order Petromyzoniformes
 * Class Chondrichthyes
 * Order Chimaeriformes
 * Order Heterodontiformes
 * Order Orectolobiformes
 * Order Carcharhiniformes
 * Order Lamniformes
 * Order Hexanchiformes
 * Order Squaliformes
 * Order Squatiniformes
 * Order Pristiophoriformes
 * Order Rajiformes
 * Class Sarcopterygii
 * Order Coelacanthiformes
 * Order Ceratodontiformes
 * Order Lepidosireniformes
 * Class Actinopterygii
 * Order Polypteriformes
 * Order Acipenseriformes
 * Order Lepisosteiformes
 * Order Amiiformes
 * Order Osteoglossiformes
 * Order Elopiformes
 * Order Albuliformes
 * Order Anguilliformes
 * Order Saccopharyngiformes
 * Order Clupeiformes
 * Order Gonorynchiformes
 * Order Cypriniformes
 * Order Characiformes
 * Order Siluriformes
 * Order Gymnotiformes
 * Order Esociformes
 * Order Osmeriformes
 * Order Salmoniformes
 * Order Stomiiformes
 * Order Aulopiformes
 * Order Myctophiformes
 * Order Lampridiformes
 * Order Polymixiiformes
 * Order Percopsiformes
 * Order Ophidiiformes
 * Order Gadiformes
 * Order Batrachoidiformes
 * Order Lophiiformes
 * Order Mugiliformes
 * Order Atheriniformes
 * Order Beloniformes
 * Order Cyprinodontiformes
 * Order Stephanoberyciformes
 * Order Beryciformes
 * Order Zeiformes
 * Order Gasterosteiformes
 * Order Synbranchiformes
 * Order Scorpaeniformes
 * Order Perciformes
 * Suborder Percoidei
 * Suborder Labroidei
 * Suborder Zoarcoidei
 * Suborder Nototheniodei
 * Suborder Trachinoidei
 * Suborder Blennioidei
 * Suborder Icosteoidei
 * Suborder Gobiesocoidei
 * Suborder Callionymoidei
 * Suborder Gobioidei
 * Suborder Acanthuroidei
 * Suborder Scombroidei
 * Suborder Stromateoidei
 * Suborder Anabantoidei
 * Suborder Channoidei
 * Order Pleuronectiformes
 * Order Tetraodontiformes

Class Amphibia

 * Class Amphibia
 * Order Anura
 * Order Caudata
 * Order Gymnophiona

Class Reptilia

 * Class Reptilia
 * Order Testudines
 * Order Crocodylia
 * Order Rhynchocephalia
 * Order Squamata

Class Aves

 * Class Aves
 * Order Struthioniformes
 * Order Procellariiformes
 * Order Sphenisciformes
 * Order Gaviiformes
 * Order Podicipediformes
 * Order Pelecaniformes
 * Order Ciconiiformes
 * Order Phoenicopteriformes
 * Order Falconiformes
 * Order Anseriformes
 * Order Galliformes
 * Order Opisthocomiformes
 * Order Gruiformes
 * Order Charadriiformes
 * Order Pterocliformes
 * Order Columbiformes
 * Order Psittaciformes
 * Order Musophagiformes
 * Order Cuculiformes
 * Order Strigiformes
 * Order Caprimulgiformes
 * Order Apodiformes
 * Order Coliiformes
 * Order Trogoniformes
 * Order Coraciiformes
 * Order Piciformes
 * Order Passeriformes

Class Mammalia

 * Class Mammalia
 * Order Monotremata
 * Order Didelphimorphia
 * Order Paucituberculata
 * Order Microbiotheria
 * Order Dasyuromorphia
 * Order Peramelemorphia
 * Order Notoryctemorphia
 * Order Diprotodontia
 * Order Xenarthra
 * Order Insectivora
 * Order Scandentia
 * Order Dermoptera
 * Order Chiroptera
 * Order Primates
 * Order Carnivora
 * Order Cetacea
 * Order Tubulidentata
 * Order Proboscidea
 * Order Hyracoidea
 * Order Sirenia
 * Order Perissodactyla
 * Order Artiodactyla
 * Order Pholidota
 * Order Rodentia
 * Order Lagomorpha
 * Order Macroscelidea

Phylum Annelida

 * Phylum Annelida
 * Class Polychaeta
 * Order Amphinomida
 * Order Capitellida
 * Order Chaetopterida
 * Order Cirratulida
 * Order Cossurida
 * Order Ctenodrilida
 * Order Dinophilida
 * Order Eunicida
 * Order Flabelligerida
 * Order Magelonida
 * Order Nerillida
 * Order Opheliida
 * Order Orbiniida
 * Order Oweniida
 * Order Phyllodocida
 * Order Poeobiida
 * Order Polygordiida
 * Order Protodrilida
 * Order Psammodrilida
 * Order Sabellariida
 * Order Sabellida
 * Order Spintherida
 * Order Spionida
 * Order Sternaspida
 * Order Terebellida
 * Class Myzostomida
 * Order Pharyngidea
 * Order Proboscidea
 * Class Oligochaeta
 * Order Haplotaxida
 * Order Lumbriculida
 * Order Moniligastrida
 * Order Opisthopora
 * Class Hirudinea
 * Order Arhynchobdellae
 * Order Rhynchobdellida
 * Class Pogonophora
 * Order Athecanephria
 * Order Thecanephria

Phylum Vestimentifera

 * Phylum Vestimentifera
 * Order Basibranchia
 * Order Riftiidae

Phylum Sipuncula

 * Phylum Sipuncula
 * Order Aspidosiphoniformes
 * Order Golfingiaformes
 * Order Phascolosomatiformes
 * Order Sipunculiformes

Phylum Echiura

 * Phylum Echiura
 * Order Bonellioinea
 * Order Echiuroinea
 * Order Heteromyota
 * Order Xenopneusta

Phylum Onychophora

 * Phylum Onychophora
 * No order designations

Phylum Tardigrada

 * Phylum Tardigrada
 * Order Arthrotardigrada
 * Order Echiniscoidea
 * Order Parachela
 * Order Apochela
 * Order Mesotardigrada

Phylum Arthropoda

 * Phylum Arthropoda

Subphylum Crustacea

 * Subphylum Crustacea
 * Class Remipedia
 * Order Nectiopoda
 * Class Cephalocarida
 * Order Brachypoda
 * Class Branchiopoda
 * Order Anostraca
 * Order Notostraca
 * Order Conchostraca
 * Order Cladocera
 * Class Malacostraca
 * Subclass Phyllocarida
 * Order Leptostraca
 * Subclass Eumalacostraca
 * Order Stomatopoda
 * Order Bathynellacea
 * Order Anaspidacea
 * Order Euphausiacea
 * Order Amphionidacea
 * Order Decapoda
 * Order Mysida
 * Order Lophogastrida
 * Order Cumacea
 * Order Tanaidacea
 * Order Mictacea
 * Order Spelaeogriphacea
 * Order Thermosbaenacea
 * Order Isopoda
 * Order Amphipoda
 * Class Maxillopoda
 * Subclass Thecostraca
 * Order Acrothoracica
 * Order Ascothoracica
 * Order Rhizocephala
 * Order Thoracica
 * Subclass Tantulocarida
 * No order designations
 * Subclass Branchiura
 * Order Arguloida
 * Subclass Mystacocarida
 * No order designations
 * Subclass Copepoda
 * Order Calanoida
 * Order Cyclopoida
 * Order Gelyelloida
 * Order Harpacticoida
 * Order Misophrioida
 * Order Monstrilloida
 * Order Mormonilloida
 * Order Platycopioida
 * Order Siphonostomatoida
 * Subclass Ostracoda
 * Order Myodocopida
 * Order Palaeocopida
 * Order Podocopida
 * Class Pentastomida
 * Order Cephalobaenida
 * Order Porocephalida

Subphylum Cheliceriformes

 * Subphylum Cheliceriformes
 * Class Pycnogonida
 * Order Pantopoda
 * Class Chelicerata
 * Subclass Merostomata
 * Order Xiphosura
 * Subclass Arachnida
 * Order Acari
 * Order Amblypygi
 * Order Araneae
 * Order Opiliones
 * Order Palpigradi
 * Order Pseudoscorpiones
 * Order Ricinulei
 * Order Schizomida
 * Order Scorpionida
 * Order Solpugida
 * Order Uropygi

Subphylum Uniramia

 * Subphylum Uniramia
 * Class Myriapoda
 * Subclass Chilopoda
 * Order Craterostigmomophora
 * Order Geophilomorpha
 * Order Lithobiomorpha
 * Order Scolopendromorpha
 * Order Scutigeromorpha
 * Subclass Diplopoda
 * Order Callipodida
 * Order Chordeumatida
 * Order Glomerida
 * Order Glomeridesmida
 * Order Julida
 * Order Platydesmida
 * Order Polydesmida
 * Order Polyxenida
 * Order Polyzoniida
 * Order Siphoniulida
 * Order Siphonophorida
 * Order Sphaerotheriida
 * Order Spirobolida
 * Order Spirostreptida
 * Order Stemmiulida
 * Subclass Symphyla
 * Order Symphyla
 * Subclass Pauropoda
 * Order Hexamerocerata
 * Order Tetramerocerata

Subphylum Hexapoda

 * Subphylum Hexapoda
 * Class Entognatha
 * Order Protura
 * Order Collembola
 * Order Diplura
 * Class Insecta
 * Order Microcoryphia
 * Order Thysanura
 * Order Ephemeroptera
 * Order Odonata
 * Order Plecoptera
 * Order Blattodea
 * Order Isoptera
 * Order Mantodea
 * Order Grylloblattodea
 * Order Dermaptera
 * Order Orthoptera
 * Order Mantophasmatodea
 * Order Phasmida
 * Order Embioptera
 * Order Zoraptera
 * Order Psocoptera
 * Order Phthiraptera
 * Order Hemiptera
 * Order Thysanoptera
 * Order Megaloptera
 * Order Raphidioptera
 * Order Neuroptera
 * Order Coleoptera
 * Order Strepsiptera
 * Order Siphonaptera
 * Order Diptera
 * Order Trichoptera
 * Order Lepidoptera
 * Order Hymenoptera

Phylum Mollusca

 * Phylum Mollusca
 * Class Aplacophora
 * Order Cavibelonia
 * Order Neomeniomorpha
 * Order Pholidoskepia
 * Class Monoplacophora
 * Order Tryblidioidea
 * Class Polyplacophora
 * Order Acanthochitonida
 * Order Ischnochitonida
 * Order Lepidopleurida
 * Class Gastropoda
 * Subclass Opisthobranchia
 * Order Acochlidioidea
 * Order Anaspidea
 * Order Cephalaspidea
 * Order Gymnosomata
 * Order Notaspidea
 * Order Nudibranchia
 * Order Runcinoidea
 * Order Sacoglossa
 * Order Thecosomata
 * Subclass Pulmonata
 * Order Actophila
 * Order Basommatophora
 * Order Stylommatophora
 * Order Systellommatophora
 * Order Patellogastropoda
 * Superorder Vetigastropoda
 * Order Haliotoidea
 * Order Lepetodriloidea
 * Order Vetigastropoda
 * Order Cocculiniformia
 * Order Neritopsina
 * Order Caenogastropoda
 * Class Bivalvia
 * Order Arcoida
 * Order Hippuritoida
 * Order Limoida
 * Order Myoida
 * Order Mytiloida
 * Order Nuculoida
 * Order Ostreoida
 * Order Pholadomyoida
 * Order Pterioida
 * Order Solemyoida
 * Order Trigonioida
 * Order Unionoida
 * Order Veneroida
 * Class Scaphopoda
 * Order Dentaliida
 * Order Gadilida
 * Class Cephalopoda
 * Order Nautilida
 * Order Octopoda
 * Order Sepioidea
 * Order Spirulida
 * Order Teuthoidea
 * Order Vampyromorphida

Phylum Phoronida

 * Phylum Phoronida
 * No order designations

Phylum Ectoprocta

 * Phylum Ectoprocta
 * Class Phylactolaemata
 * No order designations
 * Class Stenolaemata
 * Order Cyclostomata
 * Class Gymnolaemata
 * Order Cheilostomatida
 * Order Ctenostomata

Phylum Brachiopoda

 * Phylum Brachiopoda
 * Class Inarticulata
 * Order Acrotretida
 * Order Lingulida
 * Class Articulata
 * Order Rhynchonellida
 * Order Terebratulida
 * Order Thecideidina