
	Where results make sense

Topic: Archaeogastropoda

Related Topics

Ingalls, Kansas

Ambridge, Pennsylvania

Haliotidae

Norway, Michigan

JC polyomavirus

Durational pattern

Derek Ross

Fran Dresher

Doug Martindale

Morgan Falls Dam

Baron Stratheden

Fourth Nephi

Michael Mercati

Bishop of Brandenburg

In the News (Mon 28 May 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	Archaeogastropoda - Wikipedia, the free encyclopedia
		Archaeogastropoda is a traditional order of primitive marine gastropods.
		Archaeogastropods typically have two gills and usually a double chambered heart.
		Archaeogastropoda is a paraphyletic group, and in strictly cladistic classifications, the occurrence of such groups is no longer accepted.
	en.wikipedia.org /wiki/Archaeogastropoda (181 words)

	Untitled Document (Site not responding. Last check: 2007-11-01)
		Abstract: The Cirroidea are defined by their mode of coiling which is dextral in the initial whorls and sinistral and, less commonly, planispiral in the later whorls of the teleoconch.
		During the revision of slit bearing archaeogastropods from the Lower Devonian of Bohemia and the Lower Carboniferous of Belgium the presence of species belonging to the new genus Balbinipleura from the selenimorph group Bembexia was noted and the two new species B.
		A coherent place in the taxonomic system is presented for the Archaeogastropoda which is based mainly on features of the ontogeny of the shell and can also be detected on a fossil.
	www.geowiss.uni-hamburg.de /i-geolo/Palaeontologie/Forschung/archaeogastropoda.htm (1680 words)

	Veröffentlichungen von Gerhard Haszprunar
		Anatomy and affinities of cocculinid limpets (Mollusca Archaeogastropoda).
		Anatomy and affinities of pseudococculinid limpets (Mollusca, Archaeogastropoda).
		Sukashitrochus sp., a scissurellid with heteropod-like locomotion (Mollusca, Archaeogastropoda).
	www.zsm.mwn.de /dir/pub_haszprunar.htm (8343 words)

	limpets (Site not responding. Last check: 2007-11-01)
		All members of the Order Archaeogastropoda come from a single ancestral form.
		Members of Archaeogastropoda have rhipidoglossate radulae consisting of numerous rows of teeth.
		Archaeogastropoda is a large poorly defined group whose members possess one or two ctenida in their anterior mantle cavity.
	biology.fullerton.edu /courses/biol_317/web/Murray/Fall97/limpets.html (2269 words)

	Neogastropoda - Wikipedia, the free encyclopedia
		They are now included in the infraorder Neoogastropoda Cox, 1960.
		A more detailed account about the discussion on the taxonomy of the Gastropoda is given in Gastropoda, Archaeogastropoda and Mesogastropoda.
		They evolved in a much later stage than the Archaegastropoda and the Mesogastropoda.
	en.wikipedia.org /wiki/Neogastropoda (264 words)

	Untitled Document (Site not responding. Last check: 2007-11-01)
		Trochidae (Archaeogastropoda) from the Campanian of Torallola in northern Spain
		Regarding the Strombidae, the canal extending from the aperture to the apex, present on all Late Cretaceous members of this family, is proposed as the unifying apomorphy of the early strombids.
		Abstract: Seventeen gastropod species including six new ones, belonging to the Archaeogastropoda, Neritimorpha and Heterostropha, are described from the lower Maastrichtian of the Mexcala Formation in Mexico.
	www.geowiss.uni-hamburg.de /i-geolo/mitarbeiter/kiel/abstracts.htm (2008 words)

	The Ear-like Shell of Abalone
		There is not much known about the origin of these holes, but the snails seem to use the front most holes to put tentacles through them, and the older ones to get rid of their waste water.
		Like the limpets (Patellidae), abalones (Haliotidae) belong to the Order of Diotocardia or Archaeogastropoda, which is the group of the most primitive snails that occur today.
		What is unusual among contemporary gastropods: These primeval snails still have mother-of-pearl as an inner structure of their shells.
	www.suite101.com /article.cfm/snails_shells/95521 (481 words)

	Bioline International Official Site (site up-dated regularly)
		Effects of the Digenea Proctoeces lintoni (Fellodistomidae) in the Proportion of Hemolymphatic Cells in Fissurella crassa (Mollusca: Archaeogastropoda)
		The progenetic digenea Proctoeces lintoni Siddiqi & Cable, 1960 (Fellodistomidae) is a common parasite in the gonads of key-hole limpets of the genus Fissurella (Archaeogastropoda).
		This helminth causes partial castration in Fissurella crassa (ME Oliva 1992 Mem Inst Oswaldo Cruz 87: 34-42) and fecundity (expressed as egg/mm shell) of infected individuals is dramatically reduced when intensity of infection increases (ME Oliva & AA Vega 1994 Mem Inst Oswaldo Cruz 89: 225).
	www.bioline.org.br /abstract?oc99237 (161 words)

	COA :: Conchology
		Thus, an increasing number of biologists, prefer to use prosobranch as a descriptive term, rather than as the name of a taxon.
		Some workers restrict the archaeogastropods to the Pleurotomarioidea, Fissurelloidea, and Trochoidea, excluding the Cocculiniformia, and Patellogastropoda, others prefer the name Vetigastropoda for this group, to avoid confusion between a narrowly and a broadly defined Archaeogastropoda.
		As shown in an evolutionary tree, there are many different major lineages of gastropods.
	www.conchologistsofamerica.org /conchology/classification.asp (264 words)

	biology
		Throughout the text are useful links that will take you to other defining pages included in the Abalone Project's website.
		The term "archaeo" (from "archaeogastropoda") means ancient, or primitive.
		Abalone are the most primitive group of molluscs, and they have changed little since their ancestors first originated during the Cambrian period (over 500 million years ago!).
	oceanlink.island.net /abaloneproject/biology/biology.htm (878 words)

	Olympus MIC-D: Pond Life Digital Movie Gallery - Aquatic Snail (Gastropoda) Movie #2
		The class Gastropoda in the phylum Mollusca includes the snails and slugs, encompassing many freshwater and marine species.
		Freshwater species are largely in the order Archaeogastropoda, within the subclass Prosobranchia, and feature an operculum and usually a spiral, coiled shell.
		Torsion is the developmental process that results in the rotation of the mantle and organs of the snail on its foot, creating the unusual and potentially undesirable positioning of the anus adjacent to the head and mouth.
	www.olympusmicro.com /micd/galleries/moviegallery/pondscum/gastropoda/aquaticsnail/56k/aquaticsnail02.html (474 words)

	Publications of Gerhard Haszprunar
		On the anatomy and relationships of the Choristellidae (Archaeogastropoda: Lepetelloidea).
		The Archaeogastropoda: A clade, a grade or what else?
		The respective characters as well as implication for the proposed stem species of the Bilateria are outlined and discussed.
	www.zsm.mwn.de /dir/e/pub_haszprunar.htm (8353 words)

	Laboratory 9—Polyplacophorans & gastropod mollusks - 1 - (Site not responding. Last check: 2007-11-01)
		Traditionally the class was divided into the subclasses Prosobranchia, Opisthobranchia, and Pulmonata, but it is now clear that prosobranchs are an ancestral, paraphyletic grade from which the other groups evolved.
		The prosobranchs themselves were similarly divided into the orders Archaeogastropoda, Mesogastropoda and Neogastropoda, but recent work shows these also to be para- and polyphyletic.
		Neritopsines are an ancient group, with a fossil record extending to the Devonian.
	www.flmnh.ufl.edu /malacology/IZ2005/LabNotes/Lab8/lab8.htm (4643 words)

	ABMAP references
		Scissurellidae als Modell für die Variationsbreite einer natürlichen Einheit der Schlitzbandschnecken (Mollusca, Archaeogastropoda) [Scissurellidae as a model for the variability of a natural unit of the slitshells (Mollusca, Archaeogastropoda)].
		DAUPHIN Y. Implications of statistical analyses based on localized chemical contents on some species of Haliotis shells (Mollusca, Archaeogastropoda).
		MARTINEZ R.E. Nota acerca de la presencia del gastropodo Haliotis (Padollus) pourtalesii Dall, 1881 (Archaeogastropoda, Pleurotomariacea) en aguas del Caribe Venezolano.
	www.vetigastropoda.com /ABMAP/text/references.html (1961 words)

	Bibliography
		Evidence of light reception through the shell of Notoacmea persona (Rathke, 1833) (Archaeogastropoda: Acmaeidae).
		Lindberg, D. Problacmaea moskalevi Golikov and Kussakin, a new addition to the eastern Pacific limpet fauna (Archaeogastropoda: Acmaeidae).
		Integrating developmental evolutionary patterns and mechanisms: A case study using the gastropod radula.
	www.ucmp.berkeley.edu /people/davidl/Pages/biblio.html (1127 words)

	Comparative karyotypes of two northeastern Pacific abalone species Journal of Shellfisheries Research - Find Articles
		Journal of Shellfisheries Research, Dec, 2004 by Norma K. Hernandez-Ibarra, Carlos Marquez, Jose L. Ramirez, Ana M. Ibarra
		Nakamura, H. Chromosomes of Archaeogastropoda (Mollusca: Prosobranchia), with some remarks on their cytotaxonomy and phylogeny.
		C-banding Study of chromosomes in Pacific abalone Haliotis discus hannai (Archaeogastropoda: Haliotidae) Chrom Inf.
	www.findarticles.com /p/articles/mi_m0QPU/is_3_23/ai_n13490484/pg_8 (228 words)

	[No title] (Site not responding. Last check: 2007-11-01)
		Darton (1906) reported the Bighorn Dolomite to be Upper Ordovician in age.
		An archaeogastropoda is reported from the Bighorn Dolomite in Bighorn Canyon.
		Three Forks Shale & Jefferson Limestone (Devonian) Devonian age rocks, believed to correlate to the Three Forks Shale and the Jefferson Limestone, are exposed in Bighorn Canyon along Big Bull Elk Creek and in Devils Canyon.
	www2.nature.nps.gov /geology/paleontology/pub/grd4/BICA.doc (2514 words)

Try your search on: Qwika (all wikis)