1. Mollusca - Wikipedia, The Free Encyclopedia The molluscs (British spelling) or mollusks (American spelling) are members of the very large and diverse phylum of invertebrate animals known as mollusca. http://en.wikipedia.org/wiki/Mollusc

Mollusca From Wikipedia, the free encyclopedia (Redirected from Mollusc Jump to: navigation search Molluscs Fossil range: Ediacaran or Cambrian - Recent Caribbean Reef Squid Sepioteuthis sepioidea Scientific classification Kingdom: Animalia Phylum: Mollusca Linnaeus Classes Caudofoveata Aplacophora ... Bellerophontida The molluscs British spelling) or mollusks American spelling) are members of the very large and diverse phylum of invertebrate animals known as Mollusca . There are some 112,000 species within this phylum. The scientific study of molluscs is known as malacology Molluscs range from minute snails and clams ( micromollusks ) to large organisms such as squid cuttlefish and octopus , which are among the most neurologically-advanced invertebrates There are a wide variety of molluscs which are valued by humans as seafood or for their decorative shells . The edible species include many kinds of clams snails squid and octopuses The vast majority of molluscs live in marine environments, and many of them are found intertidally, in the shallow subtidal and on the continental shelf. Species of octopus and squid live throughout the ocean depths and some species of clam and limpet live in the abyssal depths of the oceans around hot vents. Not all molluscs are marine: two taxonomic groups or classes , the bivalves and the gastropods , also contain freshwater species. Only the gastropods have representatives that live on land: the land

2. Mollusca Information from the Tree of Life Project about mollusk systematics with references and links. http://www.tolweb.org/Mollusca

Temporary Page Containing Groups Bilateria Animals Eukaryotes Life on Earth Other Bilateria Deuterostomia Arthropoda Onychophora Tardigrada ... Sipuncula Mollusca Nemertea Entoprocta Phoronida Brachiopoda Subgroups Polyplacophora Bivalvia Gastropoda Cephalopoda Mollusca Snails, clams, mussels, squids, octopi, chitons, and tusk shells This tree diagram shows the relationships between several groups of organisms. The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right. You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species. For more information on ToL tree formatting, please see

3. The Mollusca mollusca is one of the most diverse groups of animals on the planet, with at least 50000 living species (and more likely around 200000). http://www.ucmp.berkeley.edu/taxa/inverts/mollusca/mollusca.php

"...the resurrection call aroused another Saurian from his long sleep." HOME SEARCH GLOSSARY ... Lophotrochozoa The Mollusca Sea slugs, squid, snails, and scallops An introduction A cuttlefish, a coleoid cephalopod, moves primarily by undulating its body fins. Mollusca is one of the most diverse groups of animals on the planet, with at least 50,000 living species (and more likely around 200,000). It includes such familiar organisms as snails, octopuses, squid, clams, scallops, oysters, and chitons. Mollusca also includes some lesser known groups like the monoplacophorans , a group once thought to be extinct for millions of years until one was found in 1952 in the deep ocean off the coast of Costa Rica. Molluscs are a clade of organisms that all have soft bodies which typically have a "head" and a "foot" region. Often their bodies are covered by a hard exoskeleton, as in the shells of snails and clams or the plates of chitons. A part of almost every ecosystem in the world, molluscs are extremely important members of many ecological communities. They range in distribution from terrestrial mountain tops to the hot vents and cold seeps of the deep sea, and range in size from 20-meter-long giant squid to microscopic aplacophorans , a millimeter or less in length, that live between sand grains.

4. Phylum Mollusca Phylum mollusca Mollusks. After reviewing this section, the student should be able to . http//animaldiversity.ummz.umich.edu/mollusca/bivalvia.html http://www.infusion.allconet.org/webquest/PhylumMollusca.html

Phylum Mollusca: Mollusks After reviewing this section, the student should be able to determine the identifying physiological characteristics of Mollusks, identify body supply systems, and discuss the major classes of Mollusks: class Bivalvia, class Gastropoda, and class Cephalopoda. The mollusks constitute one of the largest phyla of animals, both in numbers of living species (at least 47,000, and perhaps many more) and in numbers of individuals. A significant characteristic of mollusks is their possession of a coelom , a fluid-filled cavity that develops within the mesoderm. The coelom not only functions as a hydrostatic skeleton but also provides space within which the internal organs can be suspended by the mesenteries. All mollusks have a soft body (their name is derived from the Latin word mollus , meaning "soft"), which is generally protected by a hard, calcium- containing shell. In some forms however, the shell has been lost in the course of evolution, as in slugs and octopuses, or greatly reduced in size and internalized, as in squids. Structurally, mollusks are quite distinct from all other animals. However, all modern mollusks have the same fundamental body plan. There are three distinct body zones: a

5. ADW: Mollusca: Classification Information about mollusks from the Animal Diversity Web. http://animaldiversity.ummz.umich.edu/site/accounts/information/Mollusca.html

Overview News Technology Conditions of Use ... Home Kingdom Animalia Phylum Mollusca Phylum Mollusca (mollusks) Pictures Specimens Classification What do these icons mean? The icons tell you what features are available for that taxon. Information Pictures Specimens Sounds Selecting an icon will take you directly to that feature. Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World Parent taxa Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Protostomia (protostomes) Lophotrochozoa Trochozoa Phylum Mollusca (mollusks) Class Cephalopoda (octopuses and squids) Class Gastropoda (gastropods, slugs, and snails)

6. M30.htm Tylodina fungina , class Gastropoda, phylum mollusca, modified from McFarland, The phylum mollusca also includes lesser known forms such as the chitons http://www.meer.org/M30.htm

MEER home Marine biology home Table of Contents Index ... Links Phylum Mollusca Tylodina fungina class Gastropoda, phylum Mollusca, modified from McFarland, 1966. The molluscs rival the arthropods in their diversity of body forms and sizes, as well as their ecological success. The phylum also provides some of the most familiar animals, such as snails clams mussels squids , and octopus (which, like the arthropods , are well known because they're good to eat). The phylum Mollusca also includes lesser known forms such as the chitons tusk shells, solenogasters , among others. Approximately 50,000 species of Molluscs have been described, and because of the shelled forms they have left a rich fossil record. However, the earliest molluscs probably arose in the Precambrian , and nothing is known about what they were like. Systematic summary for the phylum Mollusca Class Gastropoda ( snails, sea slugs) Class Pelecypoda (=Bivalvia: clams, mussels, oysters, scallops) Class Cephalopoda (squids, octopus, nautilus, cuttlefish) Class Aplacophora Class Monoplacophora Class Polyplacophora (chitons) Class Scaphopoda (tusk shells) Class Caudofoveata CLASSES OF MOLLUSCS Class Gastropoda Hermissenda crassicornis Nudibranch (sea slug),class

7. Mollusca The organisms in the phylum mollusca are characterized by having three main body areas a headfoot (sensory and locomotion structures), a visceral mass http://www.esu.edu/~milewski/intro_biol_two/lab__11_mollusca/Mollusca.html

Kingdom Animalia PHYLUM MOLLUSCA - triploblastic eucoelomate INTRODUCTION Evolutionarily, the molluscs apparently derive from the platyhelminthes. They are classified as triploblastic eucoelomate animals, as are all phyla remaining to be examined. Most molluscs are bilaterally symmetrical and have well-defined circulatory, respiratory, excretory, and digestive systems. The molluscs are a large group, second only to arthropods in number of species. The name "mollusc" is derived from the Latin molluscus ("soft"), indicating that the molluscs are soft bodied animals. The group includes the snails, bivalves, chitons, squid, octopuses, and others. In some forms, the soft bodies are protected by a calcareous shell. The organisms in the phylum Mollusca are characterized by having three main body areas: a head-foot (sensory and locomotion structures), a visceral mass (excretory, digestive, and circulatory structures), and a mantle (which secretes the shell). The gills, which function in respiration, are located between the visceral mass and the mantle. Representatives of the following classes will be studied in this exercise: Class Polyplacophora - the chitons Class Gastropoda - snails, slugs

8. MOLLUSCA Translate this page Bienvenido a mollusca, una página pionera de la Malacología española en Internet, con la que hemos querido llenar parte del vacío existente en nuestro país, http://www.geocities.com/malacologia/

9. An Advanced Introduction To The Molluscsa (Molluscs) The Phylum mollusca (an Introduction, for Highschool level students, and all others . Now Let s Take a More Detailed Look at The Phylum mollusca http://www.manandmollusc.net/advanced_introduction/mollusca_101_intro.html

Home Page Site Map ... Printer Friendly version of article . If you just want one section printed out, go to the specific class section that you want(see individual class sections listed at the bottom of this page). The Phylum Mollusca (an Introduction, for High-school level students, and all others interested!!) By Avril Bourquin Science Editing by Ross Mayhew May, 2000 Note: Glossary and separate page links are in blue and underlined. You may have to use your back button to navigate back to article when in the glossary or in external web sites or pages.. All of the Taxonomy in the Advanced Article is being updated for in regards to structure and picture content. Thank you for your patience Early Beginnings: The time is now about 600 million years ago and the first molluscs have made their appearance on our world. About 100 million years later, during the Ordovician period, at least six of the seven classes of molluscs represented today were present. Many of these first molluscs were but simple, worm-like animals, having segments similar to what we find in annelid worms and arthropods. These first molluscs crawled about the primeval seas, probing for and eating microscopic bits of food. The great landmass of Pangaea slowly deposits dissolved salts and other chemicals into the ocean. The first primitive molluscs in these oceans now digest these chemicals and begin to use the nutrients to build themselves protective shelters (shells) against their hostile environment. As Pangaea breaks apart around 200 million years ago, the world's great continents slowly migrate, due to plate tectonics, and we begin to recognize the world continents as they are today.

10. Mollusca - Introduction The phylum mollusca is normally divided into 8 classes of very unequal importance; the most important class of living molluscs is the Gastropoda comprising http://www-biol.paisley.ac.uk/Courses/Tatner/biomedia/units/moll1.htm

Unit: Mollusca 1 Introduction MOLLUSCA The name Mollusca (from the Latin mollis meaning soft), was first used by the French zoologist Cuvier in 1798 to describe squids and cuttlefish , animals whose shell is reduced and internal, or entirely absent. It was only later that the true affinities between these species and other molluscs, such as snails and bivalves , were fully recognised. The molluscs are a very successful group. If success is measured in terms of number of species and variety of habitats to which they have become adapted, then molluscs are one of the three most successful groups in the animal kingdom. Over 160,000 species have been described, of which around 128,000 are living and about 35,000 are recorded as fossil species. Molluscs are found in nearly all habitats. In the sea they occur from the deepest ocean trenches to the intertidal* zone. They may be found in freshwater as well as on land where they occupy a wide range of habitats. Thus, during their evolution, they have become adapted to living in nearly all available habitats. The phylum Mollusca is normally divided into 8 classes of very unequal importance; the most important class of living molluscs is the

11. Aquatic Mollusca Of Illinois Online field guide to freshwater bivalves and gastropods. http://www.inhs.uiuc.edu/cbd/ilspecies/mollusksplist.html

AQUATIC MOLLUSCA OF ILLINOIS Class Bivalvia Order Unionoida - Freshwater Mussels (79 species) Family Margaritiferidae Cumberlandia monodonta (Say, 1829) - Spectaclecase SE Family Unionidae Subfamily Anodontinae (12 species) Alasmidonta marginata Say, 1818 - Elktoe Alasmidonta viridis (Rafinesque, 1820) - Slippershell ST Pyganodon grandis (Say, 1829) - Giant Floater Utterbackia imbecillis (Say, 1829) - Paper Pondshell Anodonta suborbiculata Say, 1831 - Flat Floater Anodontoides ferussacianus (Lea, 1834) - Cylindrical Papershell Arcidens confragosus (Say, 1829) - Rock Pocketbook Lasmigona complanata (Barnes, 1823) - White Heelsplitter Lasmigona compressa (Lea, 1829) - Creek Heelsplitter Lasmigona costata (Rafinesque, 1820) - Flutedshell Simpsonaias ambigua (Say, 1825) - Salamander Mussel SE Strophitus undulatus (Say, 1817) - Creeper Subfamily Ambleminae (25 species) Amblema plicata (Say, 1817) - Threeridge Cyclonaias tuberculata (Rafinesque, 1820) - Purple Wartyback ST Elliptio crassidens (Lamarck, 1819) - Elephantear ST Elliptio dilatata (Rafinesque, 1820) -

12. Dichotomous Key/Mollusca - Wikibooks, Collection Of Open-content Textbooks Retrieved from http//en.wikibooks.org/wiki/Dichotomous_Key/mollusca . Subject Dichotomous Key. Views. Module Discussion Edit this page History http://en.wikibooks.org/wiki/Dichotomous_Key/Mollusca

Dichotomous Key/Mollusca From Wikibooks, the open-content textbooks collection Dichotomous Key Jump to: navigation search Dichotomous Key : Mollusca Kingdom: Animalia Phylum: Mollusca Information related to Mollusca Wikipedia Wikispecies Wikicommons Parent key: Animalia Phyla Mollusca Key: Mollusca Mollusca Contents edit Animalia keys Subkingdom Agnotozoa Phyla Acoelomorpha Cnidaria Ctenophora Myxozoa ... Rhombozoa Superphylum:Deuterostomia Chaetognatha Chordata Echinodermata Hemichordata Superphylum:Ecdysozoa Arthropoda Kinorhyncha Loricifera Nematoda ... Tardigrada Superphylum:Lophotrochozoa Annelida Brachiopoda Ectoprocta Entoprocta ... Sipuncula Superphylum:Platyzoa Acanthocephala Cycliophora Gastrotricha Gnathostomulida ... Rotifera Presence of a foot or derived organ Yes - No - Aplacophora (subclass Chaetodermomorpha) edit Torsion Present - Gastropoda Not present - edit Presence of chromatophores - Can the animal change color? Yes - Cephalopoda No - edit Shell divided into plates Yes - Polyplacophora No - edit Segmentation Yes, primitive - Monoplacophora No - Mollusca keys Classes Aplacophora Bivalvia Caudofoveata Cephalopoda ... edit Presence of captacula Yes - Scaphopoda No - edit Shell Two parts - Bivalvia One part - Aplacophora Retrieved from " http://en.wikibooks.org/wiki/Dichotomous_Key/Mollusca

13. New Zealand Mudsnail In The Western USA Home Page News. Some of the presentation and posters from the 5th New Zealand mudsnail in the Western USA Conference are now available. http://www.esg.montana.edu/aim/mollusca/nzms/

Home Page- News Some of the presentation and posters from the 5th New Zealand mudsnail in the Western USA Conference are now available. Tim Davidson found a small population of the snails in Port Alberni, British Columbia: ( <20) under woody debris in the mid-low intertidal, salinity = 4, water temp = 21.8, lat/long = 49.247918, -124.8395221. The ID was confirmed by Robert Hershler. While this project (New Zealand mudsnail in the Western USA) made no provision for working outside the USA, this record is of interest as it is the northern-most report for Western North America. The first report of the nzms in Montana west of the divide (the Swan River) is now thought to be the second known example of a detected failed population. The collection data was removed from the database. See the status page for more information. Tarita Harju's thesis presents a GIS model using the data from the on-line database maintained here. A new report on nzms in the Green River was recently released in pdf format (2007 MAY 08). A report on the nzms in the Santa Monica Mountains of Southern California was recently released in pdf format (2006 SEPT 12).

14. Encyclopedia Smithsonian: Selected Sources Of Information On Mollusks U.S. Journals and Malacological Societies Catalog of Shell Prices Larger Collections of Mollusks in U.S. Institutions Some mollusca WWW Sites http://www.si.edu/Encyclopedia_SI/nmnh/mollusk1.htm

About Smithsonian Websites A-Z Home Encyclopedia Smithsonian ... Science and Technology Selected Sources of Information on Mollusks Preface The study of mollusks has captured the interest of amateur and scientist alike for many centuries. The National Museum of Natural History receives numerous requests from the general public for information on mollusks. We hope that the information contained in our new on-line Selected Sources of Information on Mollusks will be of help to the beginning shell collector as well as the amateur conchologist and malacologist. This bibliography is not comprehensive and is meant to serve only as a guide to selected references. Selected Sources of Information on Mollusks has undergone a substantial change in format as well as a thorough revision to produce a more streamlined publication. To that end we have eliminated several sections and combined others to avoid redundancy in titles. The section listing shell clubs has been deleted because this information is best obtained by writing to one of the national malacological organizations which we are continuing to list or by checking the Internet. The publications listed may not be obtained from the Smithsonian Institution. Most of the references cited may be consulted at local libraries, requested through an interlibrary loan or purchased through local bookstores. Some books are out of print and would be available only from a secondhand book dealer.

15. Mollusca In Germany - Snails, Clams And Malacology Here you can find information about malacology (research on mollusks), mollusks (mollusca) and conchology (study of the molluscan shells). http://www.mollusca.net/

Molluscs and Malacology in Germany in deutscher Sprache in English Here you can find information about malacology (research on mollusks), mollusks (mollusca) and conchology (study of the molluscan shells). Members of the mollusca are snails and slugs (gastropods, Gastropoda), clams and mussels (Bivalvia), squids and octopuses (Cephalopoda), chitons (Polyplacophora), tusk shells (Scaphopoda) , and the less popular groups of Monoplacophora, Solenogastres and Caudofoveata. Museums housing malacological collections Malacological societies University projects on mollusca / ... Malacological links We beg your pardon that some of the local info is only available in German language. Dear colleagues! We need your help to complete these websites and, please, link to www.mollusca.de in order to spread the knowledge about it. Please, send relevant information concerning these pages - they can only be as useful as your contributions, thank you. To avoid mistakes and to facilitate the management of the pages, please, assign and sort your contributions to the headings given. more explications and preface Page managed by Dr. Vollrath Wiese

16. New Zealand Mollusca Showcases checklists and pictures of recent species. http://www.mollusca.co.nz/

Pagodula carduelis from over 5000 metres, SW Challenger Plateau Conus howelli from approx. 95m off Ranfurly Bank, East Cape. Conus plinthis from New Caledonia down to Three Kings Rise. Conus smirna from approx. 430m off Wanganella Bank, Norfolk Ridge. Conus teremachii from 450-550m offWanganella Bank, Norfolk Ridge. Morum brunni . NW of Fleetwood Bluff, Raoul Island, Kermadec Islands. 154m Welcome to the new-look 'New Zealand Mollusca' website. I have spent the last few months re-writing and updating the website. The checklist has been updated. I am also adding more information about each species, and will be adding more photos shortly. The advanced search functionality has been updated, but not final yet. Many of the pages on this updated site are still being written! Any comments would be appreciated. Thanks, Andrew Spurgeon 1 July 2007 Updated Website New layout, new look. Hope you like it! 3 July 2007 Totally revised Search Pages , to help you find species, keywords etc. These are still being worked on. Checklist updated 1 July. Now includes Kermadec Island species. 7 July 2007 New photos added.

17. Oceanlink | Marine Sciences Education And Fun A. All shells of animals in the phylum mollusca (snails, oysters, clams, etc. .. The animal that makes it is a kind of snail (Phylum mollusca Class 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?

18. Palaeos Metazoa: Mollusca: Phylum Mollusca An overview of the molluscs, with coverage of recent and extinct groups. http://www.palaeos.com/Invertebrates/Molluscs/Mollusca.htm

Palæos Mollusca METAZOA Mollusca Page Back Unit Back Metazoa Cladogram ... Page Next Unit Next Unit Home Unit Cladogram Unit References Glossary ... Time Phylum Mollusca PROTOSTOMIA ARTHROPODA Trilobita PANCRUSTACEA ... LOPHOTROCHOZOA MOLLUSCA BASAL MOLLUSCA Rostroconchia BIVALVIA CYRTOSOMA ... PULMONATA `ANNELIDA Unit Contents Mollusca Shell Morphology Basal Mollusca Bivalvia ... References Page Contents Mollusca Physiology Diversity Habitat ... Links The Mollusks are a large and diverse group of soft-bodied unsegmented animals. Nearly 130,000 recent species are known, and some 35,000 fossil species. They include many familiar animals, like snails, clams, squid, octopi, etc, as well as others not so well known. They range in size from microscopic forms to the giant squid (Architeuthis), and have a long and venerable history appearing during earliest Cambrian time, if not before. Physiology All mollusks possess some or all of the following characteristics: a muscular fleshy foot which with gastropods (snails) is used to crawl along with but in cephalopods is modified into tentacles a visceral mass containing the digestive, excretory, and reproductive organs

19. Boggy's Links To Fossil Mollusc Fossil mollusca. 3D Stereo Microscopy Microfossils - Gastropods A palaeontological database of Rudist Bivalves Alain Denis Aporrhaidae - Site about http://www.geologylinks.com/invmoll.html

var m = "Page updated " + document.lastModified; var p = m.length-8; document.writeln(""); document.write(m.substring(p, 0)); document.writeln(""); Back to Boggy's Geology Links Main Page Fossil Mollusca 3D Stereo Microscopy : Micro-fossils - Gastropods A palaeontological database of Rudist Bivalves Alain Denis Aporrhaidae - Site about recent and fossil gastropods of the family Aporrhaidae. Bivalvia Conchiological Museum - Stichting Schepsel Schelp Conus Catalogue Title Fossils Homepage, M.N.H.N. An illustrated database on French Tertiary Fossils Fossil Holoplanktonic Mollusca Fossil Miocene Mollusca Fossil Scaphopoda Fossil Shells - General Survey Collections ... Gastrobase - database of known occurrences of gastropod genera at the stage level for the Permian and Triassic Systems Gastropoda Gastropods Identify bivalves Les fossiles du bassin de Paris gasteropods and bivalves from eocene era in France Les Rudistes Malacologia Fossile Malacologia Reggina - Marine recent and fossil molluscs from the Reggio Calabria (Italy) Malacological Journals and Newsletters Online Database Mollusk fossils in Kentucky Michigan Mollusc collection Mollia ... Mollusca - Tree of life Molluscan Paleoecology Databases Molluschi del Pliocene Italiano Nerinacean Gastropods Paleobiological patterns in Paratethyan molluscs ... Rudiste (in italian) Rudistes Systematic Paleontology of the Earliest Gastropods Texas Fossils: Snails The Mathematical Study of Mollusk Shells ... World Congress of Malacology in Vienna from 19. to 25. August 2001

20. Mollusca Journal - Formerly Malakologische Abhandlungen Homepage. Contents PDF. Editorial - PDF Instructions for authors - PDF. http://globiz.sachsen.de/snsd/publikationen/mollusca-journal/index.html

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