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Topic: Gastropoda

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Nudibranch

Orthogastropoda

Heterobranchia

Haminoeoidea

Opisthobranchia

Limpet

Helix (genus)

Mollusca

Polyplacophora

Gymnosomata

Monoplacophora

Bivalvia

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Scaphopoda

Snail

	Gastropoda - LoveToKnow 1911
		GASTROPODA, the second of the five classes of animals constituting the phylum Mollusca.
		The Gastropoda are mainly characterized by a loss of symmetry, produced by torsion of the visceral sac.
		The essential feature of the asymmetry of Gastropoda is the atrophy or disappearance of the primitively left half of the circumanal complex (the right half in sinistral forms), including the gill, the auricle, the osphradium, the hypobranchial gland and the kidney.
	www.1911encyclopedia.org /Gastropoda (14569 words)

	Malacological publications
		Observations on the formation of spermatophores in a Bulimulid land snail, Drymaeus canaliculatus (Pfeiffer, 1845) (Mollusca, Gastropoda, Pulmonata).
		Notes on the genus Naesiotus Albers, 1850 (Mollusca, Gastropoda, Bulimulidae).
		Drymaeus zingarensis, a new land snail from Colombia (Gastropoda Pulmonata: Bulimulidae).
	www.xs4all.nl /~hotpnl/publications.html (520 words)

	GASTROPODA - Online Information article about GASTROPODA
		For a discussion of the relationship of the Gastropoda to the remaining classes of the phylum, see MOLLUSCA.
		The head is seen in front resting on the foot and carrying a median non-retractile snout or rostrum, and a pair of cephalic tentacles at the base of each of which is an eye.
		In many Gastropoda the eyes are not thus sessile but raised upon special eye-tentacles (figs.
	encyclopedia.jrank.org /GAG_GEO/GASTROPODA.html (7971 words)

	Reference.com/Encyclopedia/Gastropoda
		Gastropods are one of the groups that record the changes in fauna caused by the advance and retreat of the Ice Sheets during the Pleistocene epoch.
		The taxonomy of the Gastropoda is under constant revision, but more and more of the old taxonomy is being abandoned.
		According to the newest insights (Ponder & Lindberg, 1997), the taxonomy of the Gastropoda should be rewritten in terms of strictly monophyletic groups.
	www.reference.com /browse/wiki/Gastropoda (1294 words)

	Gastropoda
		The most highly developed eyes of all the gastropods are found in the pelagic sea hares, however most gastropoda eyes are but simple light detection organs.
		As a result of torsion, all members of the gastropoda class except the Archeogastropoda (they still have both nephridia) have lost the right nephridia, or it has just been partially retained as a part of the reproductive duct.
		The nephridium is a U-shaped sac and the walls have been greatly folded to increase the surface area for secretion.
	www.manandmollusc.net /advanced_introduction/moll101gastropoda.html (7790 words)

	Gastropoda
		Gastropoda move by means of a muscular foot that pulls themselves along, sometime secreting a film of mucus beneath and behind them as they move.
		Snail members of gastropoda mainly eat plants and scrape bits of food off of vegetation.
		Gastropoda such as snails are considered a delicacy in many countries.
	www.fcps.k12.va.us /westspringfieldhs/academic/science/bjewell/ocean/hamil/final/gas.shtml (210 words)

	Staff - Harasewych publications
		A Revision of the genus Xymenopsis Powell, 1951 (Gastropoda: Muricidae).
		A new Mericella (Gastropoda: Cancellariidae) from the northeastern Africa.
		Harasewych, M.G. Abnormal hyperstrophy in Littorina lineolata (Gastropoda: Littorinidae).
	www.nmnh.si.edu /iz/mgharasewych.htm (1218 words)

	Applesnails (of Florida), Pomacea spp. (Gastropoda: Prosobranchia: Pilidae) (Site not responding. Last check: 2007-11-04)
		The applesnails belong to the subclass Prosobranchia of the Gastropoda which are distinguished from the other subclass, Pulmonata, by the presence of an operculum.
		The operculum is a cover used to close the aperture when the snails are withdrawn into their shells.
		Permission is granted to others to use these materials in part or in full for educational purposes, provided that full credit is given to the UF/IFAS, citing the publication, its source, and date of publication.
	edis.ifas.ufl.edu /IN598 (1020 words)

	Gastropoda Summary
		Gastropods are one of the groups that record the changes in fauna caused by the advance and retreat of the Ice Sheets during the Pleistocene epoch.
		The taxonomy of the Gastropoda is under constant revision, but more and more of the old taxonomy is being abandoned.
		According to the newest insights (Ponder and Lindberg, 1997), the taxonomy of the Gastropoda should be rewritten in terms of strictly monophyletic groups.
	www.bookrags.com /Gastropoda (1874 words)

	Gastropoda (Site not responding. Last check: 2007-11-04)
		Gastropoda is the largest of the molluscan classes, with over 40,000 species.
		The majority of them are marine, but a few live in freshwater, and some have adapted to land.
		Most gastropods use their radula to graze on plants or algae, but some have modified radula that dig into prey to digest the meat.
	www.jayarams.com /mollusca/gas.html (127 words)

	Dr. Peter Röpstorf: Gastropoda
		Since 1999 the main topic of research lies on ecological features as reproduction, feeding and food choice, as well as parasitology.
		General view on the systematic and taxonomy of endemic Gastropoda of Lake Baikal:
		There are several attempts to classify the endemic gastropod taxa of Lake Baikal.
	userpage.fu-berlin.de /~rpeter/english/gastropodaen.html (157 words)

	Wildlife of Sydney - Snails and slugs - Gastropoda
		Wildlife of Sydney - Snails and slugs - Gastropoda
		Gastropods are the largest group of molluscs and contain about 70% of all mollusc species.
		Most gastropods carry a single shell for protection and feed using a kind of rasping tongue with teeth called a radula.
	faunanet.gov.au /wos/group.cfm?Group_ID=7 (100 words)

	Palaeos Metazoa: Mollusca: Gastropoda: Gastropoda
		authors of the volumes on Gastropoda and Cephalopoda, the suffix -ina is used for suborders, and -ida for orders.
		Suprageneric classification of class GASTROPODA a table of suprageneric terms in the class Gastropoda, intended to provide a systematic framework usable by curators, collectors and researchers as the basis for further enquiry into gastropod systematics and an organizational scheme for systematic collections.
		Incorporates modern research by Ponder and Lindberg 1997, Wagner 1999, and other recent workers.
	www.palaeos.com /Invertebrates/Molluscs/Gastropoda/Gastropoda.html (1802 words)

	Untitled Document
		Geiger, D. Eight new species of Scissurellidae and Anatomidae (Mollusca: Gastropoda: Vetigastropoda) from around the world, with discussion of two new senior synonyms.
		Geiger, D. Phylogenetic assessment of characters proposed for the generic classification of Recent Scissurellidae (Gastropoda: Vetigastropoda) with description of one new genus and six new species from Easter Island and Australia.
		Garcia, E. Six new species of mollusks (Gastropoda: Cerithioidea, Buccinoidea, Muricoidea) from Bahía de Campeche, southwestern Gulf of Mexico.
	www.vetigastropoda.com /abstracts/publications/taxa.html (215 words)

	MavicaNET - Slugs, Snails (Gastropoda) (Site not responding. Last check: 2007-11-04)
		Photoes and some common information about nudibranch (gastropoda) and crinoid (echinodermata), sea galleries with collection of original underwater photos.
		At the 1994 Abalone Symposium it was decided that communication between abalone researchers could be facilitated by setting up a listserver for posting of messages.
		Class Gastropoda are the largest group of mollusks, with between 40,000 and 75,000 species.
	www.mavicanet.com /lite/swe/6767.html (666 words)

	Gastropoda
		he Gastropoda, comprising the snails & slugs, are one of the 7 classes of Phylum Mollusca, which also includes the bivalves and cephalopods.
		This large and successful invertebrate group has managed to adapt to almost every environment; an estimated 105,000 survive in various forms worldwide.
		All images are copyright of their respective owners, see References for sources.
	hoopermuseum.earthsci.carleton.ca /gastropoda/gastropoda.html (202 words)

	Gastropoda Overview LACM
		Below you find all the families in the Gastropoda and the way they were broken up into five parts: Patellogastropoda, "archaeogastropods", "mesogastropods", "neogastropods", and Heterobranchia.
		Please refer to the appropriate recent literature for propper phylogenetic classification, which is not the scope of this web site.
		If you are unsure in which part you may find a particular family, use the search function of your browser on this page to check for the appropriate part of the Gastropoda type catalogue.
	www.nhm.org /research/malacology/coltypelist/gastropoda_over.html (123 words)

	Marine Phyla Pages
		The class Gastropoda includes the snails and slugs.
		Most gastropods have a single, usually spirally coiled shell into which the body can be withdrawn, but the shell is lost or reduced some important groups.
		In some, it is modified for swimming or burrowing.
	kingfish.coastal.edu /marine/302/phyla/gastropoda.htm (326 words)

	Open Directory - Science: Biology: Flora and Fauna: Animalia: Mollusca: Gastropoda (Site not responding. Last check: 2007-11-04)
		ABMAP: The Abalone Mapping Project - Documents and illustrates the current geographic distribution of abalone (Gastropoda: Vetigastropoda: Haliotidae: Haliotis) world-wide.
		Class Gastropoda - A brief yet informative description on the characteristics of gastropods.
		Gastropoda of Montana - Overview of biology and taxonomy; species list for Montana.
	dmoz.org /Science/Biology/Flora_and_Fauna/Animalia/Mollusca/Gastropoda (278 words)

	Definition of gastropoda - Merriam-Webster Online Dictionary
		Learn more about "gastropoda " and related topics at Britannica.com
		Find more about "gastropoda " instantly with Live Search
		See a map of "gastropoda " in the Visual Thesaurus
	www.m-w.com /dictionary/gastropoda (41 words)

	Amazon.com: Gastropoda (Site not responding. Last check: 2007-11-04)
		Culturing Biomphalaria and Oncomelania (Gastropoda) for Large Scale Studies of Schistosomiasis by LTC Myron G. Radke, George M. Davis John I. Bruce (Paperback - 1971)
		Population structure and accompanying biota of the snail Turbo (Callopoma) funiculosus (Gastropoda: Turbinidae), on Socorro Island, Revillagigedo Archipelago,...
		Studies in the Reproduction of Archidoris Pseudoargus (Rapp) (Gastropoda Opisthobranchia).
	www.amazon.com /s?ie=UTF8&keywords=Gastropoda&tag=lexico&index=blended&link_code=qs&page=1 (518 words)

	Gastropoda (Site not responding. Last check: 2007-11-04)
		Class Gastropoda - Overview of gastropod classification from the Animal Diversity Web.
		Class Gastropoda - A brief yet informative description on the characteristics of gastropods.
		Gastropoda of Montana - Overview of biology and taxonomy; species list for Montana.
	www.alguer.it /directory/index.php?browse=/Science/Biology/Flora_and_Fauna/Animalia/Mollusca/Gastropoda (271 words)

	Gastropod, any mollusk of the class Gastropoda, which includes snails and slugs (Site not responding. Last check: 2007-11-04)
		Gastropod, any mollusk of the class Gastropoda, which includes snails and slugs
		of the class Gastropoda, which includes snails and slugs.
		The Gastropoda (Greek gaster, "stomach"; pous, "foot") are generally characterized by a single shell and an asymmetric body.
	www.student.loretto.org /zoology/Gastropod.html (925 words)

	Contents of Volume 115 (2001) (Site not responding. Last check: 2007-11-04)
		GEIGER and B. The identity of Haliotis stomatiaeformis Reeve, 1846, from the Mediterranean Sea (Gastropoda: Vetigastropoda: Haliotidae): 77—83
		NEKOLA and B. Systematics and ecology of Gastrocopta (Gastrocopta) rogersensis (Gastropoda: Pupillidae), a new species of land snail from the Midwest of the United States of America: 105—114
		Revision of the Architectonicidae (Gastropoda: Allogastropoda) from the Miocene Chipola Formation, Oak Grove Sand, and Shoal River Formation of northern Florida, with descriptions of four new species: 22—28
	www.shellmuseum.org /Nautilus/nautilus_contents_115.html (378 words)

	Gastropoda: A Foodie You Can Trust - Gawker
		Food writer Regina Schrambling had two stints at the New York Times: one on the national desk and the other as deputy editor of the Dining In/Dining Out section.
		Gastropoda [via Manhattan User's Guide, winner of TMN's Online Excellence Award]
		Reporting live from the center of the universe.
	www.gawker.com /news/diary/gastropoda-a-foodie-you-can-trust-15344.php (217 words)

	Bugs in Cyberspace - Gastropoda - Slugs and Snails
		Bugs in Cyberspace - Gastropoda - Slugs and Snails
		This snail is over an inch in diameter.
		All pictures are original, and not to be copied without my permission, please.
	www.bugsincyberspace.com /gastropoda.html (59 words)

	Class Gastropoda 01
		The Class Gastropoda ("belly foots") is the largest and most diverse group of molluscs, containing over 40,000 living species of snails, slugs, limpets, whelks, conchs, periwinkles, etc. Most (but not all) have a single shell (valve) that is usually coiled.
		When threatened by predators or the possibility of desiccation, can withdraw their bodies into the shell and seal the entrance with a tough, horny plate called an operculum on the back of the foot.
		Note: This page is best viewed at a screen size of 800 X 600 pixels
	bioweb.uwlax.edu /zoolab/Table_of_Contents/Lab-5a/Class_Gastropoda_01/class_gastropoda_01.htm (221 words)

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