List of bilateral animal orders

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The relative number of species contributed to the total by each phylum of animals. Nematoda is the phylum with the most individual organisms.
Superb fairy-wren, Malurus cyaneus
Differences between Deuterostomes and Protostomes
Yellow-winged darter, Sympetrum flaveolum
Pseudobiceros bedfordi, (Bedford's flatworm)
The use of love darts by the land snail Monachoides vicinus is a form of sexual selection

List of bilateral animal orders contains the Bilateria of the animal subkingdom Eumetazoa, divided into four superphyla, Deuterostomia, and the three Protostome superphyla, Ecdysozoa, Platyzoa and Lophotrochozoa.


Xenoturbellida

Acoelomorpha

Nemertodermatida


Acoela



Nephrozoa*
Deuterostomia*
Chordata

Cephalochordata

Olfactores

Urochordata


Craniata (including Vertebrata)



Ambulacraria

Echinodermata


Hemichordata



Protostomia*

Chaetognatha

Ecdysozoa*
Nematozoa

Nematoda


Nematomorpha



Tardigrada



Onychophora


Arthropoda


Scalidophora

Priapulida


Loricifera


Kinorhyncha



Spiralia*
Polyzoa

Bryozoa



Entoprocta


Cycliophora



Trochozoa*

Annelida


Mollusca


Nemertea



Brachiopoda


Phoronida



Platyzoa*

Gastrotricha


Platyhelminthes

Gnathifera

Gnathostomulida


Micrognathozoa


Rotifera








Superphylum Deuterostomia

Phylum Chordata

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Main article: List of chordate orders

Phylum Hemichordata

Acorn worm
Class Enteropneusta (Acorn worms)
  • Order Enteropneusta
Class Graptolithina †
Class Planctosphaeroidea

No order, one genus, one species Planctosphaera pelagica

Class Pterobranchia

Phylum Echinodermata

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Main article: List of echinodermata orders

Phylum Xenacoelomorpha

Subphylum Acoelomorpha

Phylum Vetulicolia †

File:Banffia constricta.JPG
Banffia constricta
Class Vetulicolida †
Class Banffozoa †
  • Family Banffidae †
    • Genus Banffia †
Class Heteromorphida †
Class Yuyuanozoon † ?
    • Genus Yuyuanozoon †

Superphylum Ecdysozoa

Phylum Scalidophora (unranked)

Phylum Kinorhyncha

Kinorhyncha

No class, 2 orders, called mud dragons, very common in mud or sand

Phylum Loricifera

Pliciloricus enigmatus

No class, one order Nanaloricida

Phylum Priapulida

Priapulus caudatus
Class Priapulimorpha
Class Halicryptomorpha
  • Order Halicryptomorphida
Class Seticoronaria

Phylum Nematoda

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See also: List of nematode families

Phylum Nematomorpha

Class Gordioidea
Class Nectonematoida

Phylum Panarthropoda (unranked)

Phylum Lobopodia

Class Dinocaridida †
Class Xenusia †
  • Order Archonychophora
  • Archonychophora Hou & Bergstrom, 1995[1] - Undifferentiated appendages; each segment the same as each other. See [2]
  • Luolishaniidae Hou & Bergstrom, 1995 - three small rounded sclerites per segment - these are thorn-shaped spines.[2]
  • Paucipodiidae Hou et al., 2004[3] - with no dorsal sclerites, two claws, fine annulation and few segments.

These taxa are only known from the Chengjiang (Cambrian Stage 2 Series 3).

  • Order Protonychophora
  • Protonychophora Hutchinson, 1930 - Spiny legs, reduced tail
  • Aysheaiidae Walcott, 1911 - many claws on each leg. Anterior grasping appendages with long spines.
  • Xenusiidae Dzik & Krumbiegel, 1989 - >20 leg-bearing segments; paired, rounded sclerites on each segment; spiny legs.
    • Xenusion Pompeckj, 1927
    • Jianshanopodia Liu et al [4] - from Chengjiang; two rows of tubercles but no obvious sclerites
    • Hadranax Budd & Peel 1998 — from the Sirius Passet. Lacks obvious dorsal armature, but bears four 'nodes' per row.
  • Order Scleronychophora
  • Scleronychophora Hou & Bergstrom, 1995 - paired sclerites; elongated head sclerites
  • Eoconchariidae Hou & Shu, 1987 - ~10 leg-bearing segments, small head, sieve-like sclerites, varying in shape along body; curved claws on annulated legs; terminal mouth and anus.
  • Hallucigeniidae Conway Morris, 1977 - ~10 leg-bearing segments; large sclerites covering head; sclerites on each segment are long spines.
    • Hallucigenia Conway Morris 1977 - From the Chengjiang, Kaili and Burgess Shale[5]
  • Cardiodictyidae Hou & Bergstrom, 1995 - many segments (~23); large sclerites cover head; hexagonal sclerite on each body segment.
  • Order Paronychophora
  • Paronychophora Hou & Bergstrom, 1995 - short, downwards facing head; papillae on body and legs, some arranged in rows; shield-like sclerites on head; dorsal armature of spines;[6] claw-like jaws; annulated legs [ Note - diagnosis modified in [2] ]
  • Onychodictyidae Hou & Bergstrom, 1995
  • Order unassigned
  • Orstenotubulus Maas et al 2007 from the Furongian Orsten deposits - with retractable dorsal spines[7]
  • Carbotubulus Haug et al 2012 [8] - from the Mazon creek. Dorwal armature uncertain. Few segments, long limbs.
  • Mureropodia,[9] from the Stage 2 Murero lagerstatten, Spain
Class Siberion †
    • Family Xenusiidae †
      • Genus Siberion †
Class Hadranax †
  • Order Protonychophora †
  • Order Archonychophora Hou & Bergstrom, 1995[1] - Undifferentiated appendages; each segment the same as each other. See [2]
  • Order Protonychophora Hutchinson, 1930 - Spiny legs, reduced tail
  • Order Scleronychophora Hou & Bergstrom, 1995 - paired sclerites; elongated head sclerites
    • Eoconchariidae Hou & Shu, 1987 - ~10 leg-bearing segments, small head, sieve-like sclerites, varying in shape along body; curved claws on annulated legs; terminal mouth and anus.
    • Hallucigeniidae Conway Morris, 1977 - ~10 leg-bearing segments; large sclerites covering head; sclerites on each segment are long spines.
      • Hallucigenia Conway Morris 1977 - From the Chengjiang, Kaili and Burgess Shale[5]
    • Cardiodictyidae Hou & Bergstrom, 1995 - many segments (~23); large sclerites cover head; hexagonal sclerite on each body segment.
  • Order Paronychophora Hou & Bergstrom, 1995 - short, downwards facing head; papillae on body and legs, some arranged in rows; shield-like sclerites on head; dorsal armature of spines;[6] claw-like jaws; annulated legs [ Note - diagnosis modified in [2] ]
  • Order unassigned
  • Orstenotubulus Maas et al 2007 from the Furongian Orsten deposits - with retractable dorsal spines[7]
  • Carbotubulus Haug et al 2012 [8] - from the Mazon creek. Dorwal armature uncertain. Few segments, long limbs.
  • Mureropodia,[9] from the Stage 2 Murero lagerstatten, Spain

Phylum Onychophora

Phylum Tardigrada

Hypsibius dujardini
Echiniscus
Class Eutardigrada
Class Heterotardigrada
Class Mesotardigrada
  • Order Thermozodia
    • Family Thermozodiidae
      • Genus Thermozodium

Phylum Arthropoda

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Main article: List of arthropod orders

Superphylum Platyzoa

Phylum Platyhelminthes (flatworms

Taenia saginata
Class Cestoda
Class Monogenea
Class Trematoda
File:Botulus microporus.jpg
Botulus microporus
Helicometra
Class Turbellaria
Pseudobiceros bedfordi

Phylum Gastrotricha

No classes

Phylum Rotifera

File:Bdelloid body areas.gif
SEM] pictures of some Bdelloidea species of the genus Rotaria with head (red), tail (white) and trunk (blue) areas highlighted
Class Bdelloidea
Class Monogononta
Class Seisonidea

Phylum Acanthocephala

Scanning electron microscopy of proboscis of an archiacanthocephalan [10]
Class Archiacanthocephala
Class Eoacanthocephala
Class Palaeacanthocephala

Phylum Gnathostomulida

No classes

Phylum Micrognathozoa

Some dispute here with Micrognathozoa as the class and Limnognathia as the order

Phylum Cycliophora

This phylum was discovered in 1995.

Class Symbiida

Superphylum Lophotrochozoa

Phylum Sipuncula

Class Phascolosomatidea
Class Sipunculidea

Phylum Hyolitha †

Phylum Nemertea

Class Anopla
Class Enopla

Phylum Phoronida

Class Phoronid

Phylum Bryozoa

Class Gymnolaemata
Class Phylactolaemata
Class Stenolaemata

Phylum Entoprocta

No classes, no orders, families Barentsiidae, Loxokalypodidae, Loxosomatidae, Pedicellinidae

Phylum Brachiopoda

Class Lingulata
Class Craniata/Craniforma
Class Rhynchonellata

Phylum Mollusca

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Main article: List of mollusc orders

Phylum Annelida

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Main article: List of Annelid families

References

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  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 5.2 5.3 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ 9.0 9.1 Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Amin, O. A, Heckmann, R. A & Ha, N. V. (2014) Acanthocephalans from fishes and amphibians in Vietnam, with descriptions of five new species. Parasite, 21, 53 doi:10.1051/parasite/2014052Lua error in package.lua at line 80: module 'strict' not found. open access publication - free to read
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