Nematoida

Nematomorpha

Paragordius tricuspidatus
Scientific classification
Kingdom:	Animalia
Clade:	Cycloneuralia
Clade:	Nematoida

Nematoida is a grouping of animals, including the roundworms and horsehair worms.^[1]^[2]

References

↑ "articulata". Retrieved 2009-06-28.
↑ Telford MJ, Bourlat SJ, Economou A, Papillon D, Rota-Stabelli O (April 2008). "The evolution of the Ecdysozoa". Philos. Trans. R. Soc. Lond., B, Biol. Sci. 363 (1496): 1529–37. doi:10.1098/rstb.2007.2243. PMC 2614232. PMID 18192181.

Extant phyla of kingdom Animalia

Domain: Archaea; Bacteria; Eukaryota
(Kingdom: Plant; Hacrobia; Heterokont; Alveolata; Rhizaria; Excavata; Amoebozoa; Animal; Fungi)

P
l
a
n
u
l
o
z
o
a

Cnidaria (corals, anemones, hydrozoans, jellyfish, myxozoans)

B
i
l
a
t
e
r
i
a

Xenacoelomorpha	Xenoturbellida (Xenoturbella) Acoelomorpha (acoels, nemertodermatids)

N
e
p
h
r
o
z
o
a

Deuterostomia

Chordata (lancelets, tunicates, craniates)

Ambulacraria	Hemichordata (acorn worms, pterobranchs) Echinodermata (starfish, sea urchins and relatives)

P
r
o
t
o
s
t
o
m
i
a

basal / incertae sedis	Chaetognatha (arrow worms)

Ecdysozoa
(molting animals)

Incertae sedis	Loricifera

Scalidophora	Kinorhyncha (mud dragons) Priapulida (penis worms)

Nematoida	Nematomorpha (horsehair worms) Nematoda (roundworms)

Panarthropoda	Tardigrada (waterbears) Onychophora (velvet worms) Arthropoda (arthropods)

Spiralia

Gnathifera

Platytrochozoa

Rouphozoa

Lophotrochozoa

Orthonectida¹ Dicyemida (Rhombozoa)¹ Mollusca (molluscs) Nemertea (ribbon worms) Annelida (ringed worms)

Lophophorata	Brachiopoda (lamp shells) Phoronida (horseshoe worms) Bryozoa (Ectoprocta) (moss animals)

Clade	Cycliophora (Symbion) Entoprocta (Kamptozoa)

Incertae sedis

Dendrogramma

Dubious

Monoblastozoa (Salinella)

Obsolete

Now in Arthropoda	Pentastomida (tongue worms)

Now in Syndermata	Acanthocephala (thorny-headed worms) Rotifera (wheel animals)

Now in Annelida	Sipuncula (peanut worms) Echiura (spoon worms) Pogonophora (giant tube worms) Vestimentifera

Now in Cnidaria	Myxozoa

¹Mesozoans

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