List of arthropod orders

s are invertebrate animals with a chitinous exoskeleton, segmented bodies, and jointed legs. The phylum Arthropoda contains numerous taxonomic orders in over 20 classes.

Subphylum [Hexapoda]

Class Insecta">Insects">Insecta (Insects)

Order Archaeognatha – 350
Order Zygentoma – 370
Order †Monura
Order Odonata – 5,900
Order Ephemeroptera – 3,000
Order Hemiptera – 50,000–80,000
Order Psocodea – 11,000
Order Thysanoptera – 5,000

Superorder Odonataptera

* Order †Geroptera
* Order †Protanisoptera
* Order †Triadophlebioptera
* Order †Protozygoptera
* Order †Meganisoptera
* Family †Lapeyriidae
* Family †Campylopteridae
* Family †Erasipteridae

Superorder Palaeodictyopteroidea

* Order †Archodonata
* Order †Diaphanopterodea
* Order †Megasecoptera
* Order †Palaeodictyoptera

Superorder Holometabola

* Order Coleoptera – 360,000–400,000
* Order Diptera – 152,956
* Order Hymenoptera – 115,000
* Order Lepidoptera – 174,250
* Order †Protodiptera
* Order Mecoptera – 481
* Order †Miomoptera
* Order Megaloptera – 250–300
* Order Neuroptera – 5,000
* Order Raphidioptera – 210
* Order Siphonaptera – 2,525
* Order Strepsiptera – 596
* Order Trichoptera – 12,627
* Order †Tarachoptera

Polyneoptera

* Order Dermaptera – 1,816
* Order †Protelytroptera
* Order †Caloneurodea
* Order Embioptera – 200–300
* Order †Protorthoptera
* Order †Blattoptera
* Order Mantodea – 2,200
* Order †Alienoptera
* Order Notoptera – 30
* Order Orthoptera – 24,380
* Order †Titanoptera
* Order Phasmatodea – 2,500–3,300
* Order Plecoptera – 2,274
* Order Zoraptera – 28
* Order Blattodea – 3,684–4,000

Incertae sedis

* Order †Glosselytrodea
* Order †Coxoplectoptera
Class [Entognatha]
Order Collembola
Order Diplura
Order Protura
Subphylum [Chelicerata]

Clade [Prosomapoda]

Order Xiphosura
Clade [Sclerophorata]
Order †Eurypterida
Order †Chasmataspidida
Class [Arachnid]a (Arachnids)
Subclass Acari
* Order Opilioacariformes
* Order Ixodida
* Order Holothyrida
* Order Mesostigmata
* Order Trombidiformes
* Order Oribatida
* Order Endeostigmata
* Unranked clade Astigmatina
Order Amblypygi
Order Araneae
Order †Haptopoda
Order Opiliones
Order Palpigradi
Order †Uraraneida
Order †Phalangiotarbida
Order Pseudoscorpionida
Order Ricinulei
Order Schizomida
Order Scorpiones
Order Solifugae
Order Thelyphonida
Order †Trigonotarbida
Class Pycnogonida ([Sea spider]s)
Order Pantopoda
Class [Yunnanata] †
Order Fuxianhuiida
Subphylum [Myriapod]a (Centipedes and millipedes)

Class Chilopoda ([Centipede]s)

Order Scutigeromorpha
Order Lithobiomorpha
Order Craterostigmomorpha
Order Scolopendromorpha
Order Geophilomorpha
Order †Devonobiomorpha
Class Diplopoda ([Millipede]s)

Subclass [Penicillata]

* Order Polyxenida
Subclass †[Arthropleuridea]
* Order †Arthropleurida
* Order †Eoarthropleurida
* Order †Microdecemplicida
Subclass Chilognatha
* Order †Zosterogrammida
Infraclass Pentazonia
* Order †Amynilyspedida
* Superorder Limacomorpha
** Order Glomeridesmida
* Superorder Oniscomorpha
** Order Glomerida
** Order Sphaerotheriida
Superorder †Archipolypoda
* Order †Archidesmida
* Order †Cowiedesmida
* Order †Euphoberiida
* Order †Palaeosomatida
Order †Pleurojulida
Order Platydesmida
Order Polyzoniida
Order Siphonocryptida
Order Siphonophorida
Superorder Juliformia
* Order Julida
* Order Spirobolida
* Order Spirostreptida
* Superfamily †Xyloiuloidea
Superorder Nematophora
* Order Callipodida
* Order Chordeumatida
* Order Stemmiulida
* Order Siphoniulida
* Order Polydesmida
Class [Pauropoda]
Order Pauropodina
Class [Symphyla]: no order (garden centipedes)
Family Scutigerellidae
Family Scolopendrellidae
Subphylum [Crustacea] (Crustaceans)

Class [Thylacocephala]? †

Order Concavicarida
Order Conchyliocarida
Class [Branchiopoda]
Order Anostraca
Order †Lipostraca
Order Notostraca
Subclass Diplostraca
*Order Cyclestherida
*Order Cladocera
*Order Laevicaudata
*Order Spinicaudata
Class [Remipedia]
Order †Enantiopoda
Order Nectiopoda
Class [Cephalocarida] (Horseshoe shrimp)
Order Brachypoda
Class [Maxillopoda]

Subclass [Thecostraca]

Facetotecta
Infraclass Ascothoracida
* Order Laurida
* Order Dendrogastrida
Infraclass Cirripedia
* Order Pygophora
* Order Apygophora
* Order Kentrogonida
* Order Akentrogonida
* Order Pedunculata
* Order Sessilia
Subclass [Tantulocarida]
Family Deoterthridae
Subclass [Branchiura]
Order Arguloida
Order †Cyclida
Subclass [Pentastomida] (Tongue worms)
Order Cephalobaenida
Order Porocephalida
Order Raillietiellida
Order Reighardiida
Subclass [Mystacocarida]
Order Mystacocaridida
Subclass [Copepod]a (Copepods)
Order Calanoida
Order Cyclopoida
Order Gelyelloida
Order Harpacticoida
Order Misophrioida
Order Monstrilloida
Order Mormonilloida
Order Platycopioida
Order Poecilostomatoida
Order Siphonostomatoida
Class [Ostracod]a (Ostracods, or seed shrimp)

Subclass [Myodocopa]

Order Myodocopida
Order Halocyprida
Subclass [Podocopa]
Order Platycopida
Order Podocopida
Class [Malacostraca] (Malcostracans, such as crabs and lobsters)

Subclass [Eumalacostraca]

Superorder Syncarida
*Order Anaspidacea Calman, 1904
*Order Bathynellacea Chappuis, 1915
*Order Palaeocaridacea
Superorder Peracarida
* Order Amphipoda
* Order Cumacea
* Order Isopoda
* Order Lophogastrida
* Order Mictacea
* Order †Pygocephalomorpha
* Order Spelaeogriphacea
* Order Stygiomysida
* Order Tanaidacea
* Order Thermosbaenacea
Superorder Eucarida
* Order Amphionidacea
* Order Decapoda
* Order Euphausiacea
* Order †Angustidontida
Subclass [Hoplocarida]
* Order Stomatopoda
* Order †Aeschronectida
* Order †Palaeostomatopoda
Subclass [Phyllocarida]
* Order Leptostraca
* Order †Hymenostraca
* Order †Archaeostraca
Subphylum Trilobitomorpha †

Class [Trilobita] † (Trilobites)

Order Agnostida †
Order Asaphida †
Order Corynexochida †
Order Harpetida †
Order Nectaspida †
Order Redlichiida †
Order Lichida †
Order Phacopida †
Order Proetida †
Order Ptychopariida †
Other classes

Class [Megacheira] †

Order Leanchoilia †
Order Pectocaridida †
Order Strabopida">Strabopidae">Strabopida (no class) †
Strabops
Parapaleomerus
Paleomerus
Khankaspis''
Class [Merostomoidea] †
Order Limulavida †
Order Emeraldellida †
Class [Marrellomorph] †
Order Marrellida †
Class [Cheloniellida] (no orders) †
Genus Cheloniellon
Genus Duslia
Genus Neostrabops
Genus Paraduslia
Genus Pseudarthron
Genus Triopus
Family Isoxidae">Isoxys">Isoxidae † (no order or class)
Genus Isoxys
Class [Dinocaridida] †
Order Radiodonta †
Order Anomalocarididae †
Order Opabiniidae †
Subclass [Euthycarcinoidea] †
Order Euthycarcinida
Order [Phosphatocopida] †
Hesslandonina
Vestrogothiina

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List of arthropod orders

Subphylum [Hexapoda]

Class Insecta">Insects">Insecta (Insects)

Class [Entognatha]

Subphylum [Chelicerata]

Clade [Prosomapoda]

Clade [Sclerophorata]

Class [Arachnid]a (Arachnids)

Class Pycnogonida ([Sea spider]s)

Class [Yunnanata] †

Subphylum [Myriapod]a (Centipedes and millipedes)

Class Chilopoda ([Centipede]s)

Class Diplopoda ([Millipede]s)

Subclass [Penicillata]

Subclass †[Arthropleuridea]

Subclass Chilognatha

Class [Pauropoda]

Class [Symphyla]: no order (garden centipedes)

Subphylum [Crustacea] (Crustaceans)

Class [Thylacocephala]? †

Class [Branchiopoda]

Class [Remipedia]

Class [Cephalocarida] (Horseshoe shrimp)

Class [Maxillopoda]

Subclass [Thecostraca]

Subclass [Tantulocarida]

Subclass [Branchiura]

Subclass [Pentastomida] (Tongue worms)

Subclass [Mystacocarida]

Subclass [Copepod]a (Copepods)

Class [Ostracod]a (Ostracods, or seed shrimp)

Subclass [Myodocopa]

Subclass [Podocopa]

Class [Malacostraca] (Malcostracans, such as crabs and lobsters)

Subclass [Eumalacostraca]

Subclass [Hoplocarida]

Subclass [Phyllocarida]

Subphylum Trilobitomorpha †

Class [Trilobita] † (Trilobites)

Other classes

Class [Megacheira] †

Order Strabopida">Strabopidae">Strabopida (no class) †

Class [Merostomoidea] †

Class [Marrellomorph] †

Class [Cheloniellida] (no orders) †

Family Isoxidae">Isoxys">Isoxidae † (no order or class)

Class [Dinocaridida] †

Subclass [Euthycarcinoidea] †

Order [Phosphatocopida] †