Chaetonotidae
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Chaetonotidae is a
family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
of
gastrotrichs The gastrotrichs (phylum Gastrotricha), common name, commonly referred to as hairybellies or hairybacks, are a group of Microscopic scale, microscopic (0.06–3.0 mm), cylindrical, acoelomate animals, and are widely distributed and abundant ...
in the order
Chaetonotida The Chaetonotida is an order of gastrotrichs. They generally have a tenpin or bottle-like shape. Chaetonotids inhabit both freshwater and marine environments. They can be distinguished from other gastrotrichs by the absence of pores in the phar ...
. It is the largest family of gastrotrichs with almost 400 species, some of which are marine and some freshwater. Current classification is largely based on shape and external structures but these are highly variable. Molecular studies show a high level of support for a
clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...
containing
Dasydytidae Dasydytidae is a family of gastrotrichs in the order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and ...
nested within Chaetonotidae.


Genera

The following genera are included in the family Chaetonotidae according to the World Register of Marine Species: *Subfamily Chaetonotinae Kisielewski, 1991 :*Genus '' Arenotus'' Kisielewski, 1987 ::*''Arenotus strixinoi'' Kisielewski, 1987 :*Genus '' Aspidiophorus'' Voigt, 1903 :*Genus '' Caudichthydium'' Schwank, 1990 :*Genus '' Chaetonotus'' Ehrenberg, 1830 :*Genus '' Fluxiderma'' d'Hondt, 1974 :*Genus '' Halichaetonotus'' Remane, 1936 :*Genus '' Heterolepidoderma'' Remane, 1926 :*Genus '' Ichthydium'' Ehrenberg, 1830 :*Genus '' Lepidochaetus'' Kisielewski, 1991 :*Genus '' Lepidoderma'' :*Genus '' Lepidodermella'' Blake, 1933 :*Genus '' Polymerurus'' Remane, 1927 :*Genus '' Rhomballichthys'' Schwank, 1990 :*Genus ''
Chitonodytes ''Chitonodytes'' is a genus of gastrotrichs belonging to the family Dasydytidae Dasydytidae is a family of gastrotrichs in the order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order ...
'' :*Genus '' Hemichaetonotus'' :*Genus '' Pseudichthydium'' *Subfamily '' Undulinae'' Kisielewski, 1991 :*Genus '' Undula'' Kisielewski, 1991


References

Gastrotricha Platyzoa families Taxa named by Philip Henry Gosse {{Protostome-stub