41. Mollusca. The Columbia Encyclopedia, Sixth Edition. 2001 The Columbia Encyclopedia, Sixth Edition. 2001. mollusca. (m 4. The DigestiveTract. The digestive tract of the mollusca is complex. The http://www.bartleby.com/65/mo/Mollusca.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference Columbia Encyclopedia PREVIOUS NEXT ... BIBLIOGRAPHIC RECORD The Columbia Encyclopedia, Sixth Edition. Mollusca (m l KEY ) , taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period. Mollusks are soft-bodied, and most have a prominent shell. The members of this highly successful and diverse phylum are mostly aquatic and include the familiar

42. Www.mollusca.de Translate this page Hier finden Sie Informationen über Weichtiere (mollusca) und Weichtierforschung(Malakologie oder Malakozoologie). Zu den Mollusken http://www.mollusca.de/

43. OceanLink: Mollusca Molluscs are one of the largest animal phylums, with between 50000110000 species!Octopus, squid, snails, nudibranchs, and bivalves are all molluscs. http://oceanlink.island.net/oinfo/intertidal/mollusca.html

Molluscs are one of the largest animal phylums, with between 50000-110000 species! Octopus, squid, snails, nudibranchs, and bivalves are all molluscs. There is much diversity in this group, but most members have a shell made of calcium carbonate set in a protein matrix. The shell is made of three layers: the outer, organic periostracum, the middle, calcareous prismatic layer, and the calcareous inner nacreous layer. The shell is secreted by a tissue called the mantle. Most molluscs also have a muscular "foot" that is used for locomotion. The "inside scoop" on a typical gastropod. Snails and nudibranchs belong to the Class Gastropoda. Gastropods are diverse in terms of habitat and biology. Because they are often slow moving, many have well-adapted chemical and behavioural responses to predators. The columellar muscle retracts the soft body into the shell, and a hard proteinaceaous disc called the operculum functions as a trap door. The Class Bivalvia includes clams, mussels, oysters and scallops. Bivalves have a hinged shell with two valves and a spacious interior (mantle) cavity. They are usually sedentary and filter or deposit feed. Siphons are used for the inflow and outflow of water, and these can be extended for some distance, so that the bivalve can hide underground away from predators. Structure of a clam, a typical bivalve.

44. OceanLink Answers To Mollusca Questions ASK A SCIENTIST ANSWERS TO mollusca QUESTIONS BACK TO mollusca INDEX OR ANSWERFILE. Giant Clam information Received from Lewis in Australia. http://oceanlink.island.net/ask/mollusca.html

ASK A SCIENTIST ANSWERS TO Mollusca QUESTIONS Index to Questions BIVALVES Clam Life Cycle Giant Clam info Black Pearls in Giant Clams Clam Information ... Oyster reproduction GASTROPODS Nudibranchs - predators More Nudibranch Information Conch Shells Whelk Egg Cases ... Limpet Homing Ability Tropical Limpet Predators Abalones Snail Parasites CEPHALOPODS Angry Octop us Giant Squid and Sperm Whales Giant Squid Sightings ... Squid Reproduction and Features Squid reproduction Squid Ink Squid Locomotion Squid vs. Cuttlefish Octopus and Squid Tentacles Octopus and squid diet Squid Info ... Squid Jet Tube Octopus Classification Octopus arms Octopus eggs Octopus colour changes Octopus Life Cycle Octopus Lifespan Octopus Homes Octopus predators Blue-Ringed Octopus Nautilus What is a Nautilus? Smallest squid Sepia (cuttle fish) Octopus Hearts Octopus Dying After Laying Eggs ... Cuttlefish colours GENERAL Molluscs Mollusc Life Cycles What lives in shells? Radula ... Chiton Food Chain BIVALVES Clam Life Cycle - Received from Kenny in New York. Q: Could you describe the life cycle of a clam from fertilization to adult stage? How does a clam's nervous system help it respond to changes in its environment? A: Some clams in the family Veneridae have built in biological clocks. If you were to put a clam in an aquarium, in a darkened room far from the ocean, it would still open during times of high tide on its home beach, and close during times of low tide. It is likely that this biological clock is controlled by its nervous system. One way that this clock could help the clam out is by preparing the digestive system an hour or so before the rising tide covers the animal. This way, the clam is ready to filter the water and eat the moment the tide covers it, and does not have to wait for environmental cues.

45. Science Books Microbiology; Mineralogy; mollusca; Mycology; Natural Hazards; Paleontology;Paleoanthropology; Petroleum Coal Geology; mollusca. Economic http://www.hceis.com/product/index/Mollusca.htm

Quick Search Agriculture Archaeology Architecture Birds ... Physics (Mechanics..) Protozoology Quaternary Remote Sensing Science General ... Zoology General Mollusca Economic Mollusca of China Qi Zhongyan, ECONOMIC FAUNA OF CHINA(Marine Mollusks) ECONOMIC FAUNA OF CHINA (Freshwater Mollusks) Liu Yueyin et al,1979 ECONOMIC FAUNA OF CHINA (Terrestrial Mollusks) Chen Deniu,1987 Illustrated Animals of China-Mollusca (Vol.2, 3 , 4 Qi Zhongyan, 1982, Fauna Sinica Phylum Mollusca Class Gastropoda Order Mesogastropoda Superfamily Cypraeacea Ma Xiutong,1997 Fauna Sinica Phylum Mollusca Class Gastropoda Subclass Opisthobranchia Order Cephalaspidea Lin Guangyu,1997 Fauna Sinica Mollusca Gastropoda Pulmonata Stylommatophora Clausiliidae Chen Deniu,1999 Fauna Sinica Phylum Mollusca Order Mytiloida Wang zhengrui,1997 Fauna Sinica Mollusca Class Bivalvia Subclasses Protobranchia Anomalodesmata Xu Fengshan,1999

46. Phylum Mollusca Phylum mollusca Domain Eukarya Kingdom Animalia Phylum mollusca PicturesCourtesy of The University of Arizona Tree of Life, The http://www.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/

Phylum Mollusca Domain Eukarya Kingdom Animalia Phylum Mollusca Pictures Courtesy of The University of Arizona Tree of Life The Phylum Mollusca is made up of over 150,000 diverse species appearing very different but sharing certain basic characteristics. All mollusks have a muscular foot used for locomotion, as well as a mantle, an outgrowth that covers the animal. Many mollusks have an external calcium carbonate shell, hanging over the mantle, that is actually produced by the mantle. The mantle is also used in respiration, waste disposal, and sensory reception. It often creates a mantle cavity, where the gill is housed. The gill of a mollusk extracts oxygen from the water and disposes of waste. All species of the phylum Mollusca have a complete digestive tract, spanning from the mouth to the anus. Many also have a radula, a unique organ composed mostly of chitin, in the mouth. The radula allows the animal to scrape food from surfaces, especially the ocean floor, by sliding back and forth. Mollusks have a coelom, which is develops from solid cell masses. This makes all species in this phylum protosomes. All organs are suspended in mesentary tissue within this mesodermic coelom, between the outer covering (ectoderm) and the digestive tube (endoderm) of the animal. Interestingly, the phylum Mollusca is one of only two major coelomate phyla that do not have body segmentation (the other being Echinodermata, as well as other lophophorate phyla). There are seven main classes of mollusks.

47. Mollusca mollusca. Procedure. Results. Classification. Kingdom Anamalia / Phylum molluscaMollusks are unsegmented caelmate animals with a head, mantle and muscular foot. http://www.sidwell.edu/sidwell.resources/bio/VirtualLB/classlab/animalia/14mollu

Mollusca Procedure Photograph the organisms Write a descriptive paragraph Results Classification Kingdom Anamalia / Phylum Mollusca Mollusks are unsegmented caelmate animals with a head, mantle and muscular foot. They are mostly aquatic. They are softbodied with one or multiple hard shells, and they have a 3 chambered heart. All except bivalves have a radula, which is an organ used for scraping. There are at least 47,000 species of mollusks. Class Bivalvia includes clams, oysters and mussels. Bivalves are surrounded by two shells joined by a hinge ligament. Class Gastropoda includes snails. Gastropods usually have a one piece shell. Class Cephalodopa includes cuttelfish, squids, and octopi. Cephalopods are the most active and intelligent of the mollusks. Class Polyplacophora includes Chitons. Those have a close resemblance to the hypothetical primitive form of mollusks. They have an elongated body with a mantle embedded with 8 dorsal plates. Virtual Lab Page Sidwell Biology Page Sidwell Resources Page Sidwell Friends School Home Page

48. Fossil Holoplanktonic Mollusca An introduction to fossil pteropods and heteropods http://sites.waldonet.net.mt/ariewe/

SORRY!! This page has been designed to be used with: (TM) Version 2.0 or another html-viewer that will support the usage of frames. Next

49. Mollusca Translate this page Stamm mollusca (Weichtiere). Allgemein über 50.000 rezente beschriebeneArten. - Larvenform Veligerlarve - hoher Cephalisationsgrad http://www.zoologie-online.de/Systematik/Metazoa/Mollusca/mollusca.htm

CD-ROM Zoologie jetzt Version 5.0 Die Vollversion zum bestellen. Alle Webseiten + hunderte von Bildern + Animationen +Audioausgabe ++ praktischer Teil! Mittlerweile ein Klassiker in der Zoologie. Präparations- anleitungen zu fast allen gängingen Praktikumstagen! 650MB an Texten,Bildern und Filmen hier bestellen Zoologie- Klausurfragen CD-ROM 350 Klausurfragen im Multiple-Choice Quiz-System! optimale Klausurvorbereitung und Semester- begleitung hier bestellen Lernposterset Zoologie gesammeltes theoretisches Anatomiewissen übersichtlich, didaktisch und optisch an- sprechend auf 2 Postern + ein Extraposter mit den Parasiten im Überblick! Hier bestellen Lernposterset Botanik drei Poster mit zahlreichen histologischen Fotografien, Kennzeichen der wichtigsten Blütenpflanzenfamili en und einem völlig neuartigem systematischen Üblerblick üb die Gefäßpflanzen Hier bestellen Systematik theoretische Beschreibungen der einzelnen Tiergruppen Info Kontakt: sascha@stormcrow-s oftware.de

50. Wolfgang Fischer's Homepage Translate this page mollusca. Codringtonia codringtonii (Gray 1834), Aegopis sp. Albinaria sp. (Check list of Austrian mollusca with pictures). Fossil Miocene mollusca. http://ipp.boku.ac.at/private/wf/

MOLLUSCA Codringtonia codringtonii (Gray 1834) Aegopis sp. Albinaria sp. Wolfgang Fischer - Homepage Publikationsliste Images from the Ambrakian Gulf (Epirus, Greece) Fossil and recent Melanopsidae (recent and fossil species) updated (Check list of Austrian Mollusca with pictures) Fossil Miocene Mollusca European snails Euthria aracanensis ANGAS 1873 identification request Octopus from the Queensland coast, Yule Point (north of Cairns) Some landsnails of Bali ... links updated Guest book Hits since 02/01/99 new pictures added and updated 20.01.2003 wf

51. MIOCENE - MIOZÄN - FOSSIL - MOLLUSCA - AUSTRIA -ÖSTERREICH - SCHNECKEN-GASTROP Translate this page Fossil Miocene mollusca. BUCCINIDAE Cantharus exsculptus Euthria intermedia Euthriapuschi Hinia rosthorni Phos polygonus hoernesi. CANCELLARIDAE Narona inermis. http://ipp.boku.ac.at/private/wf/Bilder/WF/Fossil Miocene Mollusca.html

Fossil Miocene Mollusca BUCCINIDAE Cantharus exsculptus Euthria intermedia Euthria puschi Hinia rosthorni ... Phos polygonus hoernesi CANCELLARIDAE Narona inermis CYPRAEIDAE Zonaria annularia hoernesiana FASCIOLARIIDAE Latirus crassus vindobonensis FICIDAE Ficus conditus FUSINIDAE Fusus simondai Fusus valenciennesi MITRIDAE Mitra scrobiculata striatula MURICIDAE Vitularia vindobonula Chicoreus michelotti Ocenebra credneri Hexaplex austriacus ... Thais haemastoides OLIVIDAE Oliva inflata Ancilla obsoleta RANELLIDAE Cymatium friedbergi Sassia tarbelliana TURRIDAE Asthenotoma festiva Drillia pustulata HOME wf

52. Phylum: MOLLUSCA Translate this page Catalogo Interattivo. Molluschi del Pliocene italiano. Phylum mollusca. INDICE SISTEMATICO PAGINA INIZIALE CLASSE. GASTROPODA, http://www.aicon.com/plio/ph_1.htm

Catalogo Interattivo Molluschi del Pliocene italiano Phylum: MOLLUSCA INDICE SISTEMATICO PAGINA INIZIALE CLASSE GASTROPODA Cuvier, 1797 SCAPHOPODA Bronn, 1862 AMPHINEURA Von Ihering, 1876 BIVALVIA Linneo, 1758 CEPHALOPODA Cuvier, 1798 plio@aicon.com

53. Swiss-Prot Taxonomic Query: Mollusca Trochozoa Phylum mollusca (Linnaeus,1758) Cuvier,1795 Details Links Ref=®(o http://us.expasy.org/cgi-bin/get-entries?OC=Mollusca

54. Filo/Division: Mollusca Translate this page BIMS. Reino. Filo. Animalia. mollusca. Lista de Clases. Bivalvia.Cephalopoda. Gastropoda. Polyplacophora. Scaphopoda. Principal. Derechosde http://www.inbio.ac.cr/bims/k02/p06.htm

Reino Filo Animalia Mollusca Lista de Clases Bivalvia Cephalopoda Gastropoda Polyplacophora ... Scaphopoda Envíe sus consultas o sugerencias a Consultas a INBio Búsquedas en el sitio Biodiversidad en Costa Rica Acerca del INBio ... Acerca de este Web

55. MOLLUSCA (slugs And Snails) BioImages The Virtual FieldGuide (UK). mollusca (slugs and snails). FamilyPisidiidae. Family Sphaeriidae (mollusca) (an orb mussel). Family Unionidae. http://www.bioimages.org.uk/HTML/T353.HTM

BioImages: The Virtual Field-Guide (UK) MOLLUSCA (slugs and snails) Class: GASTROPODA (slugs and snails) Order: Prosobranchiata (operculate snails) Order: Pulmonata (slugs and snails) Class: LAMELLIBRANCHIATA (freshwater mussels) Species: Pholas dactylus Family: Pisidiidae Family: Sphaeriidae (Mollusca) (an orb mussel) Family: Unionidae BioImages (UK) Life (living things) ... (animals)

56. Conchologists Of America -- Classification: Introduction And Gastropoda A Classification of the mollusca. by Dr. Gary Rosenberg. The followingclassification (*) reflects many changes in ideas of molluscan http://coa.acnatsci.org/conchnet/classify.html

CONCHOLOGY 101 What is a Mollusk? Molluscan classes Naming Names Establishing Relationships ... Species Classification of the Mollusca Gastropoda Bivalvia Scaphopoda Cephalopoda ... Polyplacophora A Classification of the Mollusca by Dr. Gary Rosenberg The following classification ( ) reflects many changes in ideas of molluscan relationships in the last fifteen years, particularly among gastropods. The subclass Prosobranchia, which is normally considered to include all the gastropods except the pulmonates and opisthobranchs, is not recognized. Biological groups should include the common ancestor and all of its descendants, but when defined in this way, Prosobranchia becomes a synonym of Gastropoda. Thus, an increasing number of biologists, prefer to use prosobranch as a descriptive term, rather than as the name of a taxon. The Archaeogastropoda suffer from the same problem. 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. If this tree is correct, it would be appropriate to consider each of these lineages a subclass. In the classification herein, they are ranked as orders, because no name of subclass rank has been introduced for some of them. In order to maintain consistency of ranks within the tree, Pulmonata and Opisthobranchia are called orders, although they are usually considered subclasses. The problem of non-equivalence of ranks results from various groups of workers with disparate traditions working on different groups of gastropods. At present it is impossible to present a classification that simultaneously gives consistent ranks and reflects current usage; this classification represents a compromise between the two.

57. MBL :: Marine Organisms:: Marine Organisms Database Metazoa. .. mollusca (Mollusks) Bivalvia Clams and relatives. GastropodaSnails. .. Polyplacophora. Expand from mollusca down. (137 taxa) http://www.mbl.edu/marine_org/marine_org.php?func=browse&myID=D132

58. MBL :: Marine Organisms:: Image Database At MBL ( Metazoa. .. mollusca (Mollusks) . Bivalvia Clams andrelatives. Name Server Other names for this taxon mollusca (L) Mollusks (E). http://www.mbl.edu/marine_org/flescher/flescher.php?func=browse&myID=D132

59. Mollusca: Brief Checklist Translate this page European Register of Marine Species mollusca brief checklist. Fulldetails of these species (or click on a taxon name), Information http://erms.biol.soton.ac.uk/lists/brief/Mollusca.shtml

Mollusca: brief checklist Full details of these species (or click on a taxon name) Information about this checklist Identification guides Choose another checklist Browse the taxonomic hierarchy (or click on a hierarchy icon) Phylum Mollusca Class Aplacophora Family Chaetodermatidae Hierarchy Chaetoderma intermedium Knipowitsch, 1896 Chaetoderma luitfredi (Ivanov in Scarlato, 1987) Chaetoderma marinae (Ivanov in Scarlato, 1987) Chaetoderma nitens Möbius, 1876 Chaetoderma nitidulum Lovén, 1844 Chaetoderma pellucidum Ivanov in Scarlato, 1987 Chaetoderma simplex Salvini-Plawen, 1971 Chaetoderma strigisquamatum Salvini-Plawen, 1977 Chaetoderma tetradens (Ivanov, 1981) Falcidens aequabilis Salvini-Plawen, 1972 Falcidens crossotus Salvini-Plawen, 1968 Falcidens gutturosus (Kowalewsky, 1901) Falcidens profundus Salvini-Plawen, 1968 Falcidens sagittiferus Salvini-Plawen, 1968 Falcidens sterreri (Salvini-Plawen, 1967) Falcidens thorensis Salvini-Plawen, 1971 Falcidens vasconiensis Salvini-Plawen, 1996 Family Limifossoridae Hierarchy Scutopus robustus Salvini-Plawen, 1970

60. Phylum Mollusca (ERMS Taxonomic Hierarchy) European Register of Marine Species Taxonomic hierarchy for the phylum mollusca.phylum mollusca Taxonomic position of the phylum mollusca http://erms.biol.soton.ac.uk/cgi-bin/hierarchy.pl?rank=phylum&taxon=Mollusca

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