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








Phylum Xenacoelomorpha

Subphylum Xenoturbella
Subphylum Acoelomorpha

Insert non-formatted text here

Mesozoa (unranked)

Phylum Monoblastozoa

Phylum Orthonectida

  • Class incertae sedis (2 families)

Nephrozoa (unranked)

Superphylum Deuterostomia

Phylum Chordata

Main article: List of chordate orders

Ambulacraria

Phylum Hemichordata

File:Eichelwurm.jpg
Class Enteropneusta (Acorn worms)
  • Order Enteropneusta
Class Graptolithina
Class Planctosphaeroidea

No order, one genus, one species Planctosphaera pelagica

Class Pterobranchia

Phylum Echinodermata

Main article: List of echinodermata orders

Protostomia (unranked)

Superphylum Ecdysozoa

Cycloneuralia (unranked)

Scalidophora (unranked)
Phylum Kinorhyncha
File:Kinorhyncha.png

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

Phylum Loricifera
File:Pliciloricus enigmatus.jpg

No class, one order Nanaloricida

Phylum Priapulida
File:Priapulus caudatus.jpg
Class Priapulimorpha
Class Halicryptomorpha
  • Order Halicryptomorphida
Class Seticoronaria
Nematoida (unranked)
Phylum Nematoda
Phylum Nematomorpha
Class Gordioidea
Class Nectonematoida

Panarthropoda (unranked)

Phylum Lobopodia
Class Dinocaridida
Class Xenusia

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
Tactopoda (unranked)
Phylum Tardigrada
File:Waterbear.jpg
File:Echiniscus sp.jpg
Class Eutardigrada
Class Heterotardigrada
Class Mesotardigrada
  • Order Thermozodia
    • Family Thermozodiidae
      • Genus Thermozodium
Phylum Arthropoda
Main article: List of arthropod orders

Spiralia (unranked)

Gnathifera (unranked)

Phylum Rotifera
File:Bdelloid body areas.gif
Class Bdelloidea
Class Monogononta
Class Seisonidea
Phylum Acanthocephala
File:Parasite140083-fig5 Figs 31-36 Cathayacanthus spinitruncatus.tif
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

Platytrochozoa (unranked)

Rouphozoa (unranked)
Phylum Platyhelminthes
File:Taenia saginata adult 5260 lores.jpg
Class Rhabditophora
Subphylum Neodermata
Class Cestoda
Class Monogenea
Class Trematoda
File:Botulus microporus.jpg
File:Helicometra.jpg
Phylum Gastrotricha

No classes

Superphylum Lophotrochozoa
Phylum Nemertea
Class Anopla
Class Enopla
Phylum Mollusca
Main article: List of mollusc orders
Phylum Annelida
Main article: List of Annelid families
Lophophorata (unranked)
Brachiozoa (unranked)
Bryozoa (unranked)

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

References

  1. ^ a b Hou, X.; Bergström, J. A. N. (1995). "Cambrian lobopodians-ancestors of extant onychophorans?". Zoological Journal of the Linnean Society. 114: 3–19. doi:10.1111/j.1096-3642.1995.tb00110.x. 
  2. ^ a b c d e f Ma, X.; Hou, X.; Bergström, J. (2009). "Morphology of Luolishania longicruris (Lower Cambrian, Chengjiang Lagerstätte, SW China) and the phylogenetic relationships within lobopodians". Arthropod Structure & Development. 38 (4): 271–291. doi:10.1016/j.asd.2009.03.001. 
  3. ^ a b Xian-Guang Hou, Xiao-Ya Ma, Jie Zhao & Jan Bergström; Ma; Zhao; Bergström (2004). "The lobopodian Paucipodia inermis from the Lower Cambrian Chengjiang fauna, Yunnan, China". Lethaia. 37 (3): 235–244. doi:10.1080/00241160410006555. 
  4. ^ Jianni Liu; Degan Shu; Jian Han; Zhifei Zhang & Xingliang Zhang (2006). "A large xenusiid lobopod with complex appendages from the Lower Cambrian Chengjiang Lagerstätte" (PDF). Acta Palaeontol. Pol. 51 (2): 215–222. Retrieved 9 February 2011. 
  5. ^ a b c d Whittle, R. J.; Gabbott, S. E.; Aldridge, R. J.; Theron, J. (2009). "An Ordovician Lobopodian from the Soom Shale Lagerstätte, South Africa". Palaeontology. 52 (3): 561–567. doi:10.1111/j.1475-4983.2009.00860.x. 
  6. ^ a b Liu, J.; Shu, D.; Han, J.; Zhang, Z.; Zhang, X. (2008). "The LobopodOnychodictyonfrom the Lower Cambrian Chengjiang Lagerstätte Revisited". Acta Palaeontologica Polonica. 53 (2): 285–292. doi:10.4202/app.2008.0209. 
  7. ^ a b Maas, A.; Mayer, G.; Kristensen, R. M.; Waloszek, D. (2007). "A Cambrian micro-lobopodian and the evolution of arthropod locomotion and reproduction". Chinese Science Bulletin. 52 (24): 3385–3392. doi:10.1007/s11434-007-0515-3. 
  8. ^ a b Haug, J. T.; Mayer, G.; Haug, C.; Briggs, D. E. G. (2012). "A Carboniferous Non-Onychophoran Lobopodian Reveals Long-Term Survival of a Cambrian Morphotype". Current Biology. 22: 1673–1675. PMID 22885062. doi:10.1016/j.cub.2012.06.066. 
  9. ^ a b Gámez Vintaned, J. A.; Liñán, E.; Zhuravlev, A. (2011). "A New Early Cambrian Lobopod-Bearing Animal (Murero, Spain) and the Problem of the Ecdysozoan Early Diversification". Evolutionary Biology – Concepts, Biodiversity, Macroevolution and Genome Evolution. p. 193. ISBN 978-3-642-20762-4. doi:10.1007/978-3-642-20763-1_12. 
  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. PMC 4204126Freely accessible. PMID 25331738. doi:10.1051/parasite/2014052. 
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