Rhizomolgula

Rhizomolgula
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Tunicata
Class:	Ascidiacea
Order:	Stolidobranchia
Family:	Molgulidae
Genus:	Rhizomolgula; Ritter, 1901
Species
	See text

Last updated May 05, 2019

Rhizomolgula is a genus of ascidian tunicates in the family Molgulidae.

A genus is a taxonomic rank used in the biological classification of living and fossil organisms, as well as viruses, in biology. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus.

Ascidiacea is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of the polysaccharide cellulose.

A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata. It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords. The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. They are the only chordates that have lost their myomeric segmentation, with the possible exception of the seriation of the gill slits.

Species within the genus Rhizomolgula include:^[1]

Rhizomolgula globularis (Pallas, 1776)
Rhizomolgula japonica Oka, 1926

Species names currently considered to be synonyms:

Rhizomolgula arenariaRitter, 1901: synonym of Rhizomolgula globularis (Pallas, 1776)
Rhizomolgula giganteaRedikorzev, 1907: synonym of Rhizomolgula globularis (Pallas, 1776)
Rhizomolgula intermediaMichaelsen, 1908: synonym of Rhizomolgula globularis (Pallas, 1776)
Rhizomolgula ritteriHartmeyer, 1903: synonym of Rhizomolgula globularis (Pallas, 1776)
Rhizomolgula warpachovskiiRedikorzev, 1908: synonym of Rhizomolgula globularis (Pallas, 1776)

Related Research Articles

Botrylloides is a genus of ascidian tunicates in the family Styelidae.

Styela is a genus of tunicates. Styela clava, an edible species, is known as an invasive species in some areas.

Paludinella is a genus of minute salt marsh snails with an operculum, aquatic gastropod mollusks or micromollusks, in the family Assimineidae.

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Phlebobranchia is a suborder of sea squirts in the class Ascidiacea.

Halocynthia is a genus of ascidian tunicates in the family Pyuridae. Species such as H. roretzi are used as food.

Admete is a genus of medium-sized sea snails, marine gastropod molluscs in the family Cancellariidae, the nutmeg snails.

Tritonia is a genus of sea slugs, nudibranchs, shell-less marine gastropod molluscs in the family Tritoniidae.

Stolidobranchia is an order of tunicates in the class Ascidiacea. The group includes both colonial and solitary animals. They are distinguished from other tunicates by the presence of folded pharyngeal baskets. This provides the etymology of their name: in ancient greek, στολίς, ίδος means the "fold" of a cloth. Stolidobranchian sea squirts are also characterized by the complete absence of an abdomen. The abdominal organs of other tunicates are instead located to one side of the pharyngeal basket in this group.

Velutina is a genus of small sea snails, marine gastropod mollusks in the family Velutinidae.

Facelina is a genus of sea slug, an aeolid nudibranch in the family Facelinidae.

Lucernariidae is a family of stalked jellyfish containing two genera.

Molgulidae is a family of tunicates in the class Ascidiacea. Following a revision in 2007, the family Hexacrobylidae was synonymized with Molgulidae.

Anatemnus is a genus of pseudoscorpions.

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Pareugyrioides is a genus of marine tunicates.

Dendrodoa is a genus of ascidian tunicates in the family Styelidae.

Diandrocarpa is a genus of ascidian tunicates in the family Styelidae.

Symplegma is a genus of ascidian tunicates in the family Styelidae.

Culeolus is a genus of ascidian tunicates in the family Pyuridae.

References

↑ Sanamyan, K. (2015). Rhizomolgula Ritter, 1901 . In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-29.

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[1] Sanamyan, K. (2015). Rhizomolgula Ritter, 1901 . In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-29.