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Topic: Cephalocarida

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	Cephalocarida Information
		Cephalocarida is a class inside the subphylum Crustacea that comprises only about nine shrimp-like benthic species.
		They were discovered in 1955, and are commonly referred to as horseshoe shrimps.
		View a list of authors or edit this article.
	www.bookrags.com /wiki/Cephalocarida (198 words)

	Crustacean (Site not responding. Last check: 2007-10-23)
		Various reductions and fusions notwithstanding, the crustacean body is essentially composed of a head with 5 pairs of appendages, and a trunk with numerous segments and appendages.
		The Cephalocarida, first discovered near New York (1955), are reminiscent of the primitive crustacean condition: many segments and trunk limbs are very similar, one after another (serial homology).
		Cephalocarida, tiny (2-4 mm long), hermaphroditic, shrimplike crustaceans; 9 species and 4 genera are known.
	thecanadianencyclopedia.com /PrinterFriendly.cfm?Params=A1ARTA0002059 (1722 words)

	Cephalocarida - Wikipedia
		Die Cephalocarida stellen eine Ordnung innerhalb der Krebstiere dar.
		Die Cephalocarida leben im Übergangsbereich zwischen dem Wasser und dem feinen Schlamm des Meeresbodens.
		Die Cephalocarida erreichen eine Körperlänge von etwa 3 Millimetern.
	de.wikipedia.org /wiki/Cephalocarida (666 words)

	Eucrustacea (Site not responding. Last check: 2007-10-23)
		Cephalocarida and Maxillopoda share with the Branchiopoda (and Rehbachiella) the presence of four endites on their first maxilla (brush-limb, so-called mouthpart).
		This character is seen as one of the possible autapomorphies of the stem species of Entomostraca validating their monophyletic status (another evolutionary change in the feeding system of the head and anterior trunk region).
		Cephalocarida are plesiomorphic in having 5-segmented endopods on all trunk limbs (as in the Malacostraca andin the ground pattern of Crustacea, see Walossek 1999) in contrast to Branchiopoda (and Rehbachiella) and Maxillopoda.
	biosys-serv.biologie.uni-ulm.de /sektion/dieter/eucrustacea/rehbachiella.html (745 words)

	CYCLOPOIDA - LERNAEIDAE (Site not responding. Last check: 2007-10-23)
		Sanders, H.L. The Cephalocarida, a new subclass of Crustacea from Long Island Sound.
		Wakabara, Y. Hutchinsoniella macracantha Sanders, 1955 (Cephalocarida) from Brazil.
		Wakabara, Y. and Mizoguchi, S.M. Record of Sandersiella bathyalis Hessler and Sanders, 1973 (Cephalocarida) from Brazil.
	acd.ufrj.br /mndi/Carcinologia/hp/Text/Cephalocarida.htm (89 words)

	Natuurinformatie - Cephalocarida, living fossils
		The animal, with a body consisting of a head and 19 segments bearing remarkable primitive appendages, could not be arranged properly within the systematic framework of the crustaceans.
		Therefore in order to accommodate this strange animal, a new class, the Cephalocarida or horseshoe shrimps, was defined.
		All specialists are convinced that the remarkable primitive features of this class lay at the basis of the diversity of crustaceans.
	www.natuurinformatie.nl /ndb.kbin.en/natuurdatabase.nl/i000334.html (441 words)

	Taxonomy
		Older versions of crustacean classification broke into the classes Branchiopoda, Branchiura, Cephalocarida, Cirrpedia, Copepoda, Malacostraca, Mystacocarida and Ostracoda.
		It maintains the same six classes: Branchiopoda, Cephalocarida, Ostracoda, Malacostraca, Maxillopoda, and Remipedia.
		It can be argued that Maxillopoda should actually be dissolved into its four subclasses, Copepoda, Thecostraca, Tantulocarida and Mystacocarida, to make nine classes of crustaceans, but it is generally kept as a whole.
	www.personal.psu.edu /users/e/i/eim104/taxonomy.htm (838 words)

	Crustacea
		]Remipedia" title="Remipedia"> ]Cephalocarida" title="Cephalocarida"> ]Copepoda" title="Copepoda"> ]Thecostraca" title="Thecostraca"> ]Ostracoda" title="Ostracoda"> ]Branchiopoda" title="Branchiopoda"> ]Malacostraca" title="Malacostraca"> ]Branchiura" title="Branchiura">
		This tree diagram shows the relationships between several groups of organisms.
		The phylogenetic relationships of crustaceans with foliaceous limbs: an 18S rDNA study of Branchiopoda, Cephalocarida, and Phyllocarida.
	tolweb.org /tree?group=Crustacea&contgroup=Arthropoda (522 words)

	ninemsn Encarta - Print Preview - Crustacean
		On the File menu, click Print to print the information.
		The subphylum Crustacea includes the class Cephalocarida, which contains a few small, rare, primitive forms.
		The class Branchiopoda has four orders of usually small animals that feed on suspended matter in fresh water; an exception is Artemia, the brine shrimp, which lives in saline lakes and ponds.
	au.encarta.msn.com /text_761577903___5/Crustacean.html (512 words)

	BIODIDAC - Animalia Arthropoda Cephalocarida Hutchinsoniella - CRUS006B.GIF (Site not responding. Last check: 2007-10-23)
		BIODIDAC - Animalia Arthropoda Cephalocarida Hutchinsoniella - CRUS006B.GIF
		Arthropoda, Cephalocarida, Hutchinsoniella External features of a primitive crustacean.
		Important features are the carapace and the number of legs.
	biodidac.bio.uottawa.ca /Thumbnails/CRUS006B-GIF.htm (30 words)

	Role of Maxilla 2 and Its Setae During Feeding in the Shrimp Palaemon adspersus (Crustacea: Decapoda) -- Garm et al. ...
		Derby, C. Learning from spiny lobsters about chemosensory coding of mixtures.
		Sensory structures associated with the body cuticle of Hutchinsoniella macracantha (Cephalocarida).
		Functional mouthpart morphology of the squat lobster Munida sarsi, with comparison to other anomurans.
	www.biolbull.org /cgi/content/full/204/2/126 (5442 words)

	Appendages (from crustacean) -- Britannica Student Encyclopedia
		Form and function of external features > Appendages
		There is great diversity among the appendages of the Crustacea, but it is thought that all the different types can be derived either from the multibranched (multiramous) limb of the class Cephalocarida or from the double-branched (biramous) limb of the class Remipedia.
		A biramous limb typically has a basal part, or protopodite, bearing two branches, an inner endopodite…
	www.britannica.com /ebi/article-33804 (816 words)

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