List of arthropod orders

*Marrella*, one of the puzzling arthropods from the Burgess Shale

Arthropods 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)

Order Archaeognatha – 350 (Jumping bristletails)
Order Zygentoma – 370
Order †Monura
Order Odonata – 5,900 (Dragonflies and damselflies)
Order Ephemeroptera – 3,000 (Mayflies)
Order Hemiptera – 50,000–80,000 (True bugs)
Order Psocodea – 11,000 (Lice, bark lice, book lice)
Order Thysanoptera – 5,000 (Thrips)

Superorder Odonataptera

- Order †Geroptera
- Order †Protanisoptera
- Order †Triadophlebioptera
- Order †Protozygoptera
- Order †Meganisoptera
- Family †Lapeyriidae
- Family †Campylopteridae
- Family †Erasipteridae (likely paraphyletic)

Superorder Palaeodictyopteroidea

- Order †Archodonata
- Order †Diaphanopterodea
- Order †Megasecoptera
- Order †Palaeodictyoptera

Superorder Holometabola

- Order Coleoptera – 360,000–400,000 (Beetles)
- Order Diptera – 152,956 (Flies)
- Order Hymenoptera – 115,000 (Sawflies, wasps, bees, and ants)
- Order Lepidoptera – 174,250 (Butterflies and moths)
- Order †Protodiptera (Permotipula and Permila)
- Order Mecoptera – 481 (Scorpionflies)
- Order †Miomoptera
- Order Megaloptera – 250–300 (Alderflies, dobsonflies, and fishflies)
- Order Neuroptera – 5,000 (Net-winged insects)
- Order Raphidioptera – 210 (Snakeflies)
- Order Siphonaptera – 2,525 (Fleas)
- Order Strepsiptera – 596 (Twisted-wing parasites)
- Order Trichoptera – 12,627 (Caddisfly)

(Unranked) Polyneoptera

- Order Dermaptera – 1,816 (Earwigs)
- Order †Protelytroptera
- Order †Caloneurodea
- Order Embioptera – 200–300 (Webspinners)
- Order †Protorthoptera (Paraphyletic assemblage of basal and stem polyneopterans)
- Order †Blattoptera (Paraphyletic assemblage of basal and stem cockroaches)
- Order Mantodea – 2,200 (Mantises)
- Order †Alienoptera
- Order Notoptera – 30 (Includes icebugs)
- Order Orthoptera – 24,380 (Grasshoppers, locusts, crickets, etc.)
- Order Titanoptera
- Order Phasmatodea – 2,500–3,300 (Stick insects or stick-bugs)
- Order Plecoptera – 2,274 (Stoneflies)
- Order Zoraptera – 28 (Angel insects)
- Order Blattodea – 3,684–4,000 (Cockroaches and termites)

Incertae sedis

- Order †Glosselytrodea
- Order †Coxoplectoptera

Class Entognatha

Order Collembola (Springtails)
Order Diplura (Diplurans)
Order Protura (Coneheads)

Subphylum Chelicerata

Clade Prosomapoda

Order Xiphosura

Clade Sclerophorata

Order Eurypterida

Class Arachnida (Arachnids)

Subclass Acari

- Order Opilioacariformes
- Order Ixodida (Ticks)
- Order Holothyrida
- Order Mesostigmata
- Order Trombidiformes
- Order Oribatida (Beetle mites)
- Unranked clade Astigmatina
Order Amblypygi (Whip spiders)
Order Araneae ("True" spiders)
Order †Haptopoda (Plesiosiro madeleyi)
Order Opiliones (Harvestmen, also known as daddy longlegs)
Order Palpigradi (Microwhip scorpions)
Order †Uraraneida
Order †Phalangiotarbida
Order Pseudoscorpionida (Pseudoscorpions, or false scorpions)
Order Ricinulei (Hooded tickspiders)
Order Schizomida (Shorttailed whipscorpions)
Order Scorpiones (True scorpions)
Order Solifugae (Sun spiders or wind scorpions)
Order Thelyphonida (Whip scorpions)
Order †Trigonotarbida

Class Pycnogonida (Sea spiders)

Order Pantopoda

Class Yunnanata †

Order Fuxianhuiida (Fuxianhuia protensa)

Subphylum Myriapoda (Centipedes and millipedes)

Class Chilopoda (Centipedes)

Order Scutigeromorpha
Order Lithobiomorpha (stone centipedes)
Order Craterostigmomorpha
Order Scolopendromorpha (tropical centipedes)
Order Geophilomorpha (soil centipedes)

Class Diplopoda (Millipedes)

Subclass Penicillata

- Order Polyxenida (Bristly millipedes)

Subclass †Arthropleuridea

- Order †Arthropleurida
- Order †Eoarthropleurida
- Order †Microdecemplicida (Microdecemplex rolfei)

Subclass Chilognatha

- Order †Zosterogrammida ^[1]
Infraclass Pentazonia
- Order †Amynilyspedida
- Superorder Limacomorpha
  - Order Glomeridesmida
- Superorder Oniscomorpha (Pill millipedes)
  - Order Glomerida
  - Order Sphaerotheriida (Giant pill millipedes)
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 † (Sometimes aligned with Spirobolida)^[2]
Superorder Nematophora
- Order Callipodida
- Order Chordeumatida
- Order Stemmiulida
- Order Siphoniulida
- Order Polydesmida (Flat-backed millipedes)

Class Pauropoda

Order Pauropodina

Class Symphyla: no order (garden centipedes)

Family Scutigerellidae
Family Scolopendrellidae

Class Arthropleuridea †

Subphylum Crustacea (Crustaceans)

Class Thylacocephala? †

Order Concavicarida
Order Conchyliocarida

Class Branchiopoda

Order Anostraca (Fairy shrimp)
Order Notostraca (Tadpole shrimp)
Subclass Diplostraca (Clam shrimp)
- Order Cyclestherida
- Order Cladocera (Water fleas)
- Order Laevicaudata
- Order Spinicaudata

Class Remipedia

Order Enantiopoda †
Order Nectiopoda

Class Cephalocarida (Horseshoe shrimp)

Order Brachypoda

Class Maxillopoda

Subclass Thecostraca

(unranked) Facetotecta
Infraclass Ascothoracida
- Order Laurida
- Order Dendrogastrida
Infraclass Cirripedia (Barnacles)
- Order Pygophora
- Order Apygophora
- Order Kentrogonida
- Order Akentrogonida
- Order Pedunculata (Goose barnacles)
- Order Sessilia (Acorn barnacles)

Subclass Tantulocarida

Family Deoterthridae (no order)

Subclass Branchiura

Order Arguloida (Carp lice, or fish lice)
Order † Cyclida (Cycloids)

Subclass Pentastomida (Tongue worms)

Subclass Mystacocarida

Order Mystacocaridida

Subclass Copepoda (Copepods)

Class Ostracoda (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 (Includes freshwater shrimp and sandhoppers)
- Order Cumacea (Hooded shrimp)
- Order Isopoda (Isopods - includes wood lice)
- Order Lophogastrida
- Order Mictacea
- Order †Pygocephalomorpha
- Order Spelaeogriphacea
- Order Stygiomysida
- Order Tanaidacea (Tanaids)
- Order Thermosbaenacea
Superorder Eucarida
- Order Amphionidacea (Amphionides reynaudii)
- Order Decapoda (Crayfish, crabs, lobsters, prawns, and shrimp)
- Order Euphausiacea (Krill)

Subclass Hoplocarida

- Order Stomatopoda (Mantis shrimp)
- Order Aeschronectida †
- Order Palaeostomatopoda †

Subclass Phyllocarida

- Order Leptostraca
- Order Hymenostraca † (Hymenocaris vermicauda)
- 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 Cheloniellida (no orders)†

Genus Cheloniellon
Genus Duslia
Genus Neostrabops
Genus Paraduslia
Genus Pseudarthron
Genus Triopus

Class Dinocaridida †

Order Radiodonta †
Order Anomalocarididae †
Order Opabiniidae †

Subclass Euthycarcinoidea †

Order Euthycarcinida

Order Phosphatocopida †

(unranked) Hesslandonina
(unranked) Vestrogothiina

References

^ Shear, William A.; Edgecombe, Gregory D. (2010). "The geological record and phylogeny of the Myriapoda". Arthropod Structure & Development. 39 (2–3): 174–190. doi:10.1016/j.asd.2009.11.002. PMID 19944188.
^ Hoffman, R.L. (1963). "New genera and species of Upper Paleozoic Diplopoda". Journal of Paleontology. 37 (1): 167–174. JSTOR 1301419.

[Shear.Edgecombe2010-1] Shear, William A.; Edgecombe, Gregory D. (2010). "The geological record and phylogeny of the Myriapoda". Arthropod Structure & Development. 39 (2–3): 174–190. doi:10.1016/j.asd.2009.11.002. PMID 19944188.

[Hoffman1963-2] Hoffman, R.L. (1963). "New genera and species of Upper Paleozoic Diplopoda". Journal of Paleontology. 37 (1): 167–174. JSTOR 1301419.

[1]

[2]