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Topic: Orthogastropoda

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	Bulletin No.38
		Orthogastropoda Ponder and Lindberg, 1996: All remaining non-patellogastropod groups (node 9) are here regarded as a clade.
		In the Orthogastropoda, the left osphradium was retained (as in Neritopsina, Cocculina, Neomphalus, and Apogastropoda), and it was regained in paired condition in Vetigastropoda.
		In Orthogastropoda, tooth number was reduced to a single pair in Caenogastropoda or increased to four to five pairs in rhipidoglossate taxa.
	www.um.u-tokyo.ac.jp /publish_db/Bulletin/no38/no38011.html (10341 words)

	NationMaster - Encyclopedia: Opisthobranchia
		Subclass Subclass Eogastropoda Patellogastropoda Subclass Orthogastropoda Superorder Cocculiniformia Superorder Hot Vent Taxa Neomphaolida Superorder Vetigastropoda Superorder Neritaemorphi Neritopsina Superorder Caenogastropoda Architaenioglossa Sorbeoconcha Superorder Heterobranchia Heterostropha Opisthobranchia Pulmonata The gastropods, or univalves, are the largest and most successful class of mollusks, with 60,000-75,000 extant species known, comprising the...
		Phylum (plural: phyla) is a taxon used in the classification of animals, adopted from the Greek phylai the clan-based voting groups in Greek city-states.
		Subclass Subclass Eogastropoda Patellogastropoda Subclass Orthogastropoda Superorder Cocculiniformia Superorder Hot Vent Taxa Neomphaolida Superorder Vetigastropoda Superorder Neritaemorphi Neritopsina Superorder Caenogastropoda Architaenioglossa Sorbeoconcha Superorder Heterobranchia Heterostropha Opisthobranchia Pulmonata The gastropods, or univalves, are the largest and most successful class of mollusks, with 60,000-75,000 species, and second largest class...
	www.nationmaster.com /encyclopedia/Opisthobranchia (1656 words)

	- The Captains Blog -
		If I was a slug, this is exactly where I'd live.
		Sea hares are small marine gastropod molluscs of the suborder Anaspidea in the subclass Orthogastropoda, class Gastropoda, phylum Mollusca.
		Their common name derives from the projections on their bodies which somewhat resemble rabbit ears.
	www.captainsblogcayman.blogspot.com (1043 words)

	Orthogastropoda Information (Site not responding. Last check: 2007-11-05)
		In their work, which has become a standard reference in the field, Ponder and Lindberg (1997) showed that the Orthogastropoda is one of two subclasses of the Gastropoda the class of molluscs, the other subclass being the Eogastropoda.
		This subclass, which one could call the true snails, is defined most briefly as all those gastropods which are not members of Patellogastropoda, the true limpets, or its ancestors.
		View a list of authors or edit this article.
	www.bookrags.com /wiki/Orthogastropoda (209 words)

	slug@Everything2.com (Site not responding. Last check: 2007-11-05)
		A gastropod whose shell is either absent or internal.
		Orthogastropoda includes snails, which have external shells, and slugs, which do not.
		The absence of a shell in Orthogastropoda has evolved independently multiple times, meaning that there is more than one scientific classification for animals commonly lumped together as slugs.
	everything2.com /index.pl?node=slug (1752 words)

	Your group:Fossil Groups: SciComms 04-05: Earth Sciences
		Although, these early terrestrial gastropods are not directly related to the modern pulmonate land snails.
		The primitive archaeogastropods (now included in Subclasses Eogastropoda and Orthogastropoda) reproduced by external fertilisation: their eggs and sperm shed via the exhalent current into the sea for fertilisation.
		Reproduction on land and in fast flowing rivers required the evolution of internal fertilisation.
	palaeo.gly.bris.ac.uk /Palaeofiles/Fossilgroups/gastropo/index_files/fossil.html (678 words)

	Genstyle Companion Database Browser
		Eukaryota Metazoa Mollusca Gastropoda Orthogastropoda Apogastropoda Heterobranchia Euthyneura Opisthobranchia Nudibranchia Doridina Eudoridoidea Archidorididae Archidoris
		Eukaryota Metazoa Mollusca Gastropoda Orthogastropoda Apogastropoda Heterobranchia Euthyneura Opisthobranchia Nudibranchia Doridina Anadoridoidea Onchidorididae Acanthodoris
		Eukaryota Metazoa Mollusca Gastropoda Orthogastropoda Apogastropoda Heterobranchia Euthyneura Opisthobranchia Nudibranchia Doridina Eudoridoidea Dorididae Doris
	genstyle.imed.jussieu.fr /affichage_esp.php?cherche=Dorididae (689 words)

	Nautical Gifts, Shells, Gift SuperWarehouse
		Spider Shell (Lambis Lambis) Measurements: 5 - 6 inches Also known as the Spider Conch.
		Taxonomic Information Class GASTROPODA ORTHOGASTROPODA Order CAENOGASTROPODA - SORBEOCONCHA - HYPSOGA...
		Assorted Carved Cowry Sealife Shells Measurements: 3.5 inches The outer layer has been removed from this beautifully colorful cowry shell, leaving a purple background with various sealife scenes...
	www.giftsuperwarehouse.com /products.asp?cat=336 (422 words)

	GastroClass: Gastropod Classification
		Subclass ORTHOGASTROPODA Ponder and Lindberg, 1996 [= PROSOBRANCHIA Milne Edwards, 1848 p.p.
		Phylogeny and zoogeography of the bathyal family Pleurotomariidae (Mollusca; Gastropoda; Orthogastropoda), Annual Report - Western Society of Malacologists, 30: 29.
		Harper, J. and Rollins, H. Recognition of Monoplacophora and Gastropoda in the fossil record: a functional morphological look at the bellerophont controversy, Proceedings of the Third North American Paleontological Convention, 227-232.
	www.nhm.ac.uk /research-curation/projects/gastroclass (6678 words)

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