List of arthropod orders

Arthropods are invertebrate animals having an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and cuticle made of chitin, often mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species.

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)

Subclass Monocondylia or Monochlamydia

Subclass Dicondylia

Class Collembola

Subphylum Chelicerata

Class Xiphosura

Class †Eurypterida

Class Arachnida (Arachnids)

Class Pycnogonida

Subphylum Myriapoda (Centipedes and millipedes)

Class Chilopoda (Centipedes)

Class Diplopoda (Millipedes)

See also: List of millipede families

Subclass Penicillata

Subclass Chilognatha

Class Pauropoda

Class Symphyla

Subphylum Crustacea (Crustaceans)

  • Order †Henningsmoenicarida
  • Order †Cambropachycopida
  • Order †Cambrocarida
  • Order †Martinssoniida
  • Order †Phosphatocopida
  • Order †Bostrichopodida

Class †Thylacocephala

Class Remipedia

Class Branchiopoda

Class Cephalocarida

Class Thecostraca

[3]

Subclass Ascothoracida

Subclass Cirripedia (Barnacles)

Subclass Facetotecta

Class Hexanauplia

Subclass Copepoda (Copepods)

Class Ichthyostraca

Subclass Branchiura

Subclass Pentastomida

Class Mystacocarida

[4]

Class Ostracoda (Ostracods, or seed shrimp)

  • Order †Eridostracoda

Subclass †Leperditicopa

  • Order †Leperditicopida
  • Order thippslicus

Subclass †Leiocopa

  • Order †Leiocopida

Subclass Palaeocopa

Subclass Myodocopa

Subclass Podocopa

Class Malacostraca (Malcostracans, such as crabs and lobsters)

See also: List of prehistoric malacostracans

Subclass Eumalacostraca

Subclass Hoplocarida

Subclass Phyllocarida

  • Order ?†Discinocarida
  • Order †Archaeostraca
  • Order †Hoplostraca
  • Order Leptostraca

Subphylum †Artiopoda

no class

Class †Protosutura

  • Order †Acanthomeridiida

Class †Aglaspida

Class †Trilobita

See also: List of trilobite genera

Order Retifaciida

Subclass †Petalopleura

Subclass †Nectopleura

Subclass †Conciliterga

Subclass †Trilobita

Other classes

no class

Class †Megacheira

Class †Marrellomorpha

Class †Dinocaridida

Class †Euthycarcinoidea

References

  1. ^ Shear, William A.; Edgecombe, Gregory D. (2010). "The geological record and phylogeny of the Myriapoda". Arthropod Structure & Development. 39 (2–3): 174–190. Bibcode:2010ArtSD..39..174S. doi:10.1016/j.asd.2009.11.002. PMID 19944188.
  2. ^ Hoffman, R.L. (1963). "New genera and species of Upper Paleozoic Diplopoda". Journal of Paleontology. 37 (1): 167–174. JSTOR 1301419.
  3. ^ "World Register of Marine Species". Retrieved 2021-08-24.
  4. ^ WoRMS (2021). Mystacocarida. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1079 on 2021-08-23
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