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Topic: Annelida

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Annelid

Oligochaeta

Leech

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Echiura

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	Annelida on Encyclopedia.com (Site not responding. Last check: 2007-10-20)
		Commented checklist of the polychaetes (Annelida: polychaeta) from areas adjacent to islands of the Mexican Pacific and Gulf of California.
		Factors Influencing Spawning and Pairing in the Scale Worm Harmothoe imbricata (Annelida: Polychaeta).
		Asexual Reproduction in Pygospic elegans C1aparede (Annelida, Polychaeta) in Relation to Parasitism by Lepocreadium setiferides (Miller and Northup) (Platyhelminthes, Trematoda).
	www.encyclopedia.com /html/A/Annelida.asp (446 words)

	Science Biology Flora and Fauna Animalia Annelida (Site not responding. Last check: 2007-10-20)
		Annelida - Introduction - Annelid worms, brought to you by Biological Sciences at the University of Paisley.
		Introduction to the Annelida - Introduction to the Annelida, the segmented worms.
		UCSC Annelida - Anatomical illustrations of segmented worms from the University of California at Santa Cruz.
	www.apartment1a.com /Resources/Science/Biology/Flora_and_Fauna/Animalia/Annelida (144 words)

	Directory - Science: Biology: Flora and Fauna: Animalia: Annelida (Site not responding. Last check: 2007-10-20)
		Annelida - Introduction · cached · Annelid worms, brought to you by Biological Sciences at the University of Paisley.
		Introduction to the Annelida · cached · Introduction to the Annelida, the segmented worms.
		UCSC Annelida · cached · Anatomical illustrations of segmented worms from the University of California at Santa Cruz.
	www.incywincy.com /default?p=71083 (143 words)

	The Annelids (Phylum Annelida)
		The Annelida are a medium sized phylum of more than 9,000 species of worms.
		The Phylum Annelida is divided into 3 classes, one of which the Clitellata could really be called a Superclass, it contains three subclasses, the Oligochaeta, the Branchiobdella and the Hirundinea.
		Like the classification of all living things the classification of the Annelida is under revision by experts and the current beliefs of scientists are only theories not facts, different schemes may be put forward as we acquire more knowledge.
	www.earthlife.net /inverts/annelida.html (1765 words)

	INHS Annelida Collection (main) (Site not responding. Last check: 2007-10-20)
		The INHS Annelida Collection is perhaps the largest state collection of freshwater oligochaetes in the country, holding more than 320,000 specimens (over 6,500 lots, or collections).
		Two paratypes of this species are deposited in the INHS Annelida Collection (no accession number); the holotype and one paratype of this species are deposited in the U.S. National Museum of the Smithsonian Institution, Washington, D.C. Over 70% of the slide-mounted aquatic oligochaetes have been identified.
		An important part of the INHS Annelida Collection is the extensive library of published papers and reprints focusing on Annelida.
	www.inhs.uiuc.edu /~mjwetzel/INHS.AnnelColl.html (935 words)

	NAB2000 Annelida Bibliography (Site not responding. Last check: 2007-10-20)
		Boore, J.L.; Brown, W.M. Mitochondrial genomes of Galathealinum, Helobdella, and Platynereis: Sequence and gene arrangement comparisons indicate that Pogonophora is not a phylum and Annelida and Arthropoda are not sister taxa.
		Pinder, A.; Brinkhurst, R.O. New Phreodrilidae (Annelida: Clitellata) from Tasmanian estuaries.
		Mesenchytraeus antaeus, a new giant enchytraeid (Annelida, Clitellata) from the temperate rainforest of British Columbia, Canada, with a revised diagnosis of the genus Mesenchytraeus.
	www.inhs.uiuc.edu /~mjwetzel/nabs01F.html (8506 words)

	Annelida
		Annelida: Bibliography - Bibliography See R. Brinkhurst and B. Jamieson, Aquatic Oligochaeta of the World (1972); K. Annelida: Class Polychaeta - Class Polychaeta The vast majority of the more than 8,000 known species of polychaete worms are...
		Annelida: Class Oligochaeta - Class Oligochaeta This class includes about 3,500 species of earthworms and freshwater worms.
		Holopelagic Poeobius meseres ("Poeobiidae," Annelida) is derived from benthic flabelligerid worms.
	www.infoplease.com /ce6/sci/A0804124.html (299 words)

	Halanych Lab Personnel (Site not responding. Last check: 2007-10-20)
		Phylogeny of Eunicida (Annelida) and Exploring Data Congruence using a Partition Addition Bootstrap Alteration (PABA) approach.
		Dinophilidae (Annelida) is not a progenetic Eunicida; Evidence from 18S and 28S rDNA.
		Struck, T.H., Purschke, G. and Halanych, K. Molecular phylogeny of Eunicida (Annelida: "Polychaeta") and the implications for evolution of their recent and fossil jaw elements.
	www.auburn.edu /academic/science_math/biology/faculty/halanych/Struck.htm (594 words)

	Aquatic Annelida of Illinois - Checklist
		This paper follows the division of the phylum Annelida into two subphyla: the Aclitellata (Aphanoneura and Polychaeta), and the Clitellata (including the Acanthobdellae, Branchiobdellae, Oligochaeta, and Hirudinea).
		An assessment of the phylogeny of the Branchiobdellida (Annelida: Clitellata), using PAUP.
		Jamieson, B.G.M. Phylogenetic and phenetic systematics of the opisthoporous Oligochaeta (Annelida: Clitellata).
	www.inhs.uiuc.edu /~mjwetzel/Awoi.mjw.www.hmpg.list.html (2051 words)

	Phylum Annelida
		The phylum Annelida is made up of segmented worms, numbering about 15,000 species.
		Therefore, because a segmented body is advantageous, it evolved twice, with the protosomes, as shown by phyla Annelida and Arthropoda, and again in the deuterosomes, as shown by phylum Chordata.
		Other hallmarks of the annelids are soft bodies that are round in cross section, repetition of organs in the segemented parts, and a body that is much longer than it is wide.
	www.sidwell.edu /us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/Annelida (261 words)

	Characteristics of Annelida: Plesiomorphies and Other Features
		This has been challenged by other authors who suggest that nuchal organs may be an apomorphy for Annelida as a whole and have been lost in Clitellata/Oligochaeta (Purschke et al., 2000).
		The two different kinds of ducts are often simply referred to as segmental organs since determining what kind of duct is present is problematic.
		A new genus and species of Dorvilleidae (Annelida, Polychaeta) from Bermuda, with a phylogenetic analysis of Dorvilleidae, Iphitimidae and Dinophilidae.
	tolweb.org /accessory/Characteristics_of_Annelida?acc_id=57 (1080 words)

	WormNet grant (Site not responding. Last check: 2007-10-20)
		In particular, the Annelida, commonly called segmented worms, has been central to debates on the role of segmentation in animal evolution.
		Recent evidence suggests that several non-segmented or partially segmented worm taxa, that were previously regarded as separate phyla, are within the annelid radiation.
		The proposed work has two goals: 1) Genomic approaches will be used to reconstruct the early phylogenetic events of the "Annelida", which includes several previously recognized phyla, and 2) Functional genomic techniques will be used to characterize the developmental mechanisms employed in segmentation in several key lineages.
	www.auburn.edu /academic/science_math/biology/faculty/halanych/wormnet.html (345 words)

	Polychaete References
		Laverde-Castillo, J.J.A. Occurrence of Grubeulepis westoni Pettibone (Annelida: Polychaeta: Eulepethidae) in the Colombian Caribbean.
		Streblospio gynobranchiata, a new spionid polychaete species (Annelida: Polychaeta) from Florida and the Gulf of Mexico with an analysis of phylogenetic relationships within the genus Streblospio.
		Russell, D.E. The Taxonomy and distribution of Syllidae (Annelida: Polychaeta) inhabiting mangrove and adjacent shallow water habitats of Twin Cays, Belize.
	www.nhm.org /guana/bvi-invt/bvi-surv/ref-poly.htm (5208 words)

	World bibliography on subterranean Annelida, Clitellata (Aphanoneura - Oligochaeta)
		BRINKHURST (R. A phylogenetic analysis of the Lumbriculidae (Annelida, Oligochaeta).
		BRINKHURST (R. A phylogenetic analysis of the Phreodrilidae (Annelida, Oligochaeta) with a description of a new species.
		COOK (D. The genera of the family Lumbriculidae and the genus Dorydrilus (Annelida, Oligochaeta).
	members.aol.com /blspecies/oligochaeta.htm (3572 words)

	Colgate University Biology Department - Damhnait McHugh (Site not responding. Last check: 2007-10-20)
		, showed that the Annelida we traditionally define is not a natural group that includes all the descendents from the original annelid ancestor.
		In fact, my data indicate that the deep-sea hot vent tube worms and the unsegmented, mud-dwelling echiurids — both groups that have been considered as separate, independent evolutionary lineages — are actually derived annelids with bizarre body forms.
		McHugh, D. (1999) Phylogeny of the Annelida: Siddall et al.
	departments.colgate.edu /biology/people/DMcHugh.html (1219 words)

	Annelida
		Since many segments are similar to other segments in form and function, damage to one or several segments does not necessarily compromise body functions.
		The phylum Annelida (segmented worms) is diverse, containing the earthworms, leeches, and marine worms.
		There are three major classes within the phylum Annelida, described below.
	www.esu.edu /~milewski/intro_biol_two/lab__12_annel_arthro/Annelida.html (1240 words)

	ANNELIDA
		Sperm entry in Hydroides hexagonus (Annelida) and Saccoglossus kowalevski (Enteropneusta).
		Electron microscope studies of the egg surfaces and membranes of Hydroides hexagonus (Annelida) and Saccoglossus kowalevskii (Enteropneusta).
		GRAVE, B. Rate of growth, age at sexual maturity, and duration of life of certain sessile organisms, at Woods Hole, Massachusetts.
	www.mbl.edu /BiologicalBulletin/EGGCOMP/pages/40.html (1600 words)

	lb7pg1
		To examine the basic body plan, and the feeding, respiratory, circulatory and reproductive systems of the Phylum Annelida.
		To examine the basic body plan, and the feeding, respiratory, circulatory and reproductive systems of the Phylum Arthropoda.
		The most distinctive feature of the members of the phylum Annelida is the division of their bodies into rings or segments (Latin annellus = little ring).
	io.uwinnipeg.ca /~simmons/lb7pg1.htm (856 words)

	Annelida (from circulation) -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-20)
		While some small segmented worms of the phylum Annelida have no separate circulatory system, most have a well-developed closed system.
		The typical arrangement is for the main contractile dorsal vessel to carry blood anteriorly while a number of vertical segmental vessels, often called hearts, carry it to the ventral vessel, in which it passes posteriorly.
		More results on "Annelida (from circulation)" when you join.
	www.britannica.com /eb/article-33700?tocId=33700 (829 words)

	Tissues And Organs Of Annelida (Site not responding. Last check: 2007-10-20)
		There are about 15000 species in the phylum Annelida.
		The Annelids (Phylum Annelida) - Characteristics of Annelida:- 1)Bilaterally symmetrical and vermiform.
		Phylum Annelida (from endocrine system) -- Encyclopædia Britannica - Phylum Annelida (from endocrine system) The cerebral ganglion (brain) of...
	www.pianothings.com /tissues-and-organs-of-annelida.html (794 words)

	ANNELIDA - Biomedia Zoology Museum (Site not responding. Last check: 2007-10-20)
		However, in the ancestral coelomate the force of muscle contractions in one area was carried throughout the body and so precise control of body movements was not possible.
		The phylum Annelida is divided into 3 classes:
		Unit 7 - Taxonomy Table - Classification of the Phylum Annelida
	www-biol.paisley.ac.uk /biomedia/text/txt_annelida.htm (521 words)

	Annelida: Earthworm
		Purpose: The purpose of this lab is to introduce the student to the organ systems and body plan of an earthworm, a representative of the phylum Annelida.
		Materials and Methods: This lab requires preserved earthworms, xs slides of the earthworm, dissection pins and trays, microscopes (compound and dissection), and lens paper.
		Name two other types of segmented worms that belong to phylum Annelida.
	faculty.southwest.tn.edu /jiwilliams/earthworm.htm (121 words)

	Life Science Safari - Annelid Phylum
		The night crawlers you use for fishing and the worm on your driveway after a hard rain belong to Phylum Annelida (uh NEL ud uh), the segmented worms.
		The tube-shaped bodies of all segmented worms are divided into many little sections.
		Their tunnels add air and their waste is fertilizer.
	vilenski.org /science/safari/animals/annelids (134 words)

	Introduction to the Annelida (Site not responding. Last check: 2007-10-20)
		There are about 9000 species of annelid known today.
		An Annelid Worm Biodiversity List is available, with links to a large number of annelid-related resources of all sorts.
		It also includes subscription information on the ANNELIDA e-mailing list.
	www.ucmp.berkeley.edu /annelida/annelida.html (164 words)

	BiologyBrowser: Organism Resources and Links (Site not responding. Last check: 2007-10-20)
		An open public mailing list for discussion of whole-organism research into Phylum Annelida and allied groups.
		Animal Kingdom on the Iberian Peninsula and Balearic Islands : Annelida
		Aphanoneuran and clitellate Annelida occurring in the United States and Canada
	www.biologybrowser.org /bb/Organism/Invertebrata/Annelida/index.shtml (152 words)

	Annelida (from chemoreception) -- Encyclopædia Britannica
		More results on "Annelida (from chemoreception)" when you join.
		Profile of the invertebrate phylum Annelida (segmented worms).
		Includes information on the fossil record, life history and ecology, systematics, and morphology.
	www.britannica.com /eb/article-64760?tocId=64760 (773 words)

	Oceanlink \| marine sciences education and fun
		A: This is quite an interesting question, and needs some background first for those who may be unfamiliar with the genus of worms known as Amphitrite.
		The common earthworm (for example, the genus Lumbricus) and the worms in the genus Amphitrite are both in the Phylum Annelida (segmented worms).
		However, they are in different classes - earthworms are in the class Oligochaeta, while Amphitrite are in the class Polychaeta.
	oceanlink.island.net /ask/annelida.html (1828 words)

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