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Topic: Larvacea

Related Topics

Tunicate

Doliolida

Thaliacea

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Ascidiacea

Chordata

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Vertebrata

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Myxini

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	Evolution
		Class Larvacea are interesting to look at, even though they are not likely to be direct ancestors to vertebrates.
		In the adult stage Larvacea retain their notochord tail, which is evidence that neotony is possible.
		It is generally accepted within the scientific community that Cephalochordata are the closest invertebrate relatives to vertebrates.(1) There is first the caecum, which is the digestive organ for these organisms.
	www.personal.psu.edu /users/c/j/cjr199/evo.htm (289 words)

	FishBase Glossary Searched Term (Site not responding. Last check: 2007-10-03)
		Small transparent animals belonging to the Subphylum Urochordata (tunicates) and found in marine plankton; Class Larvacea.
		Petits animaux transparents qui appartiennent au Subphylum des Urochordata (tuniciers) et se trouvent dans le plancton marin ; Classe Larvacea (Appendiculaires).
		Animales pequeños y transparentes pertenecientes al subfilum Urochordata (tunicados), constituyentes del plancton marino; clase Larvacea.
	www.fishbase.org /larvalbase/Glossary/Glossary.cfm?TermEnglish=larvaceans (65 words)

	Larvacea - All About All findings (Site not responding. Last check: 2007-10-03)
		Phylum: Chordata Subphylum: Urochordata Class: Appendicularia Families Fritillariidae Kowalevskiidae Oikopleuridae The Appendicularia or Larvacea are a group of free-swimming pelagic urochordates found throughout the worlds oceans.
		Appendicularians are filter feeders that primarily occupy the euphotic zone (upper sunlit portion of the...
		The pelagic Tunicata of the San Diego region, excepting the Larvacea, (University of California publications.
	www.allaboutall.info /search/Larvacea (414 words)

	UROCHORDATA
		The Larvacea are the most different of the Urochords.
		Instead of having a 'tunic', the Larvacea instead have a transparent gelatinous 'house'.
		To eat, the combined effort of cilia and the tail slowly move the animal forward, which forces water through the inlet grid, through the house, and through a fine network.
	www.personal.psu.edu /users/c/j/cjr199/uro.html (769 words)

	The Larvaceans (Class Larvacea)
		The Larvacea, sometimes called the Apendicularians are small animals quite different in form to the rest of the Urochordata.
		Their body consists of a basically oval trunk and a relatively long thin tail.
		It is not expensive and should be thoroughly enjoyable, so if you like it please tell people about it, or better still give it to someone as a present for Christmas of a birthday.
	www.earthlife.net /inverts/larvacea.html (623 words)

	larvacean -- Encyclopædia Britannica
		also called Appendicularian, any member of the class Larvacea, of the subphylum Urochordata, or Tunicata, belonging to the phylum Chordata.
		Reaching lengths of 5 mm (0.2 inches), larvaceans are transparent, larva-like organisms that live in the open sea.
		any member of the class Larvacea, of the subphylum Urochordata, or Tunicata, belonging to the phylum Chordata.
	www.britannica.com /eb/article-9047228 (365 words)

	Chordata. The Columbia Encyclopedia, Sixth Edition. 2001-05
		The salps (Thaliacea) metamorphose into barrel-shaped adults that swim by muscular contractions.
		The larvaceans (Larvacea) are neotenous, that is, they achieve sexual maturity and reproduce without losing the larval form.
		Many zoologists believe that tunicates of the sea squirt type were the first chordates and that the larval tail, with its notochord and nerve chord, was evolved as a means of dispersing their larvae.
	www.bartleby.com /65/ch/Chordata.html (3196 words)

	Middle East Open Encyclopedia: Larvacea (Site not responding. Last check: 2007-10-03)
		This is an extract from The Middle East Open Encyclopedia, made possible through the Wikimedia Foundation.
		Iraq Museum International always displays the most recent published revision of the source article, Larvacea; all previous versions may be viewed here.
		They link directly to authoring tools for you to start writing a particular article.
	www.baghdadmuseum.org /ref/index.php?title=Larvacea (515 words)

	tunicate on Encyclopedia.com (Site not responding. Last check: 2007-10-03)
		The salps (class Thaliacea) are barrel-shaped tunicates, open at both ends; they swim by muscular contractions that force water through the body.
		The larvaceans (class Larvacea) retain the larval form, with a tail and a notochord, as adults.
		A commonly held theory maintains that vertebrates evolved from animals like the larvaceans.
	www.encyclopedia.com /html/t1/tunicate.asp (743 words)

	Urochordates
		Urochordates have a notochord that extends from just behind the head to the tail (rather than from head to tail; Urochordata means "tail-cord").
		There are three classes within this subphylum: Ascidiacea, Thaliacea, and Larvacea.
		Examine the demonstration material as you work through this exercise.
	cas.bellarmine.edu /tietjen/images/urochordates.htm (434 words)

	larvacea - OneLook Dictionary Search
		We found 5 dictionaries with English definitions that include the word larvacea:
		Tip: Click on the first link on a line below to go directly to a page where "larvacea" is defined.
		larvacea : WordNet 1.7 Vocabulary Helper [home, info]
	onelook.com /?w=larvacea (77 words)

	class larvacea - definition, thesaurus and related words from WordNet-Online (Site not responding. Last check: 2007-10-03)
		class larvacea - definition, thesaurus and related words from WordNet-Online
		Hint: double-click any word on the page to get it searched!
		Larvacea, class Larvacea - small free-swimming tunicates; sometimes classified as an order
	www.wordnet-online.com /class_larvacea.shtml (54 words)

	class Larvacea - Definition of class Larvacea by Webster's Online Dictionary (Site not responding. Last check: 2007-10-03)
		class Larvacea - Definition of class Larvacea by Webster's Online Dictionary
		class Larvacea - small free-swimming tunicates; sometimes classified as an order
		category, class, family, genus Appendicularia, Larvacea, larvacean, subphylum Tunicata, subphylum Urochorda, subphylum Urochordata, Tunicata, Urochorda, Urochordata
	www.webster-dictionary.org /definition/class%20Larvacea (48 words)

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