Parachaela

Parachaela Temporal range: Cretaceous–Recent^[1] PreЄ Є O S D C P T J K Pg N

Hypsibius dujardini
Scientific classification
Kingdom:	Animalia
Phylum:	Tardigrada
Class:	Eutardigrada
Order:	Parachaela
Families
See text.

Parachaela is an order of water bear or moss piglet, a tardigrade in the class Eutardigrada.

Families

Beornidae
Calohypsibiidae
Eohypsibiidae
Hypsibiidae
Macrobiotidae
Microhypsibiidae
Necopinatidae

References

↑ Budd, G. (2001). "Tardigrades as 'Stem-Group Arthropods': The Evidence from the Cambrian Fauna". Zoologischer Anzeiger - A Journal of Comparative Zoology 240 (3–4): 265–279. doi:10.1078/0044-5231-00034. ISSN 0044-5231.

External links

Extant phyla of kingdom Animalia

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

P
l
a
n
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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
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m
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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

Extremophiles

Types

Notable
extremophiles

Bacteria	Chloroflexus aurantiacus Deinococcus radiodurans Deinococcus–Thermus Snottite Thermus aquaticus Thermus thermophilus Spirochaeta americana GFAJ-1

Archaea	Pyrococcus furiosus Strain 121 Pyrolobus fumarii

Animalia	Paralvinella sulfincola Halicephalobus mephisto Pompeii worm Tardigrada

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