List of bilaterian orders

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.

Phylum Xenacoelomorpha
Subphylum Xenoturbelida
Subphylum Acoelomorpha

Superphylum Deuterostomia

Phylum Chordata
Main article: List of chordate orders

Phylum Hemichordata
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

Infrakingdom Protostomia
Phylum Kinorhyncha

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

Phylum Loricifera

No class, one order Nanaloricida

Phylum Priapulida
Class Priapulimorpha
Class Halicryptomorpha
  • Order Halicryptomorphida
Class Seticoronaria
Phylum Nematoda
See also: List of nematode families
Phylum Nematomorpha
Class Gordioidea
Class Nectonematoida
Phylum Lobopodia †
Class Xenusia
Phylum Onychophora

No classes, no orders, families Peripatidae and Peripatopsidae

Phylum Tardigrada
Class Eutardigrada
Class Heterotardigrada
Phylum Arthropoda
Main article: List of arthropod orders
Phylum Gnathostomulida

No classes

Phylum Micrognathozoa

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

Phylum Cycliophora
Class Eucycliophora
  • Order Symbiida
Phylum Rotifera
Class Bdelloidea
Class Monogononta
  • Order Collothecida
  • Order Flosculariida
  • Order Ploimida
Class Seisonidea
Phylum Acanthocephala
Class Archiacanthocephala
Class Eoacanthocephala
Class Palaeacanthocephala
Phylum Dicyemida

No classes, no orders, families Conocyemidae, Dicyemidae and Kantharellidae

Phylum Monoblastozoa

No classes, no orders, family Salinellidae

Phylum Orthonectida

No classes, no orders, families Pelmatosphaeridae and Rhopaluridae

Phylum Platyhelminthes
Class Rhabditophora
Subphylum Neodermata
Class Cestoda
Class Monogenea
Class Trematoda
Phylum Gastrotricha

No classes

Superphylum Lophotrochozoa


Phylum Mollusca
Main article: List of mollusc orders
Phylum Annelida
Main article: List of Annelid families
Kryptotrochozoa (unranked)
Phylum Nemertea
Lophophorata (unranked)

No classes, no orders, family Phoronidae

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

References
  1. 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/2014052. PMC 4204126. PMID 25331738.
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