Geometry.Net - Science: Mollusca

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

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

Extractions: Temporary Page 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
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

Extractions: 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.
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

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

Extractions: 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.
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

Extractions: 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.
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/
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

Extractions: 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.
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

Extractions: Unit: Mollusca 1 Introduction 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
Aquatic Mollusca Of Illinois
Online field guide to freshwater bivalves and gastropods.
http://www.inhs.uiuc.edu/cbd/ilspecies/mollusksplist.html
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

Extractions: 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 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 Mollusca keys Classes Aplacophora Bivalvia Caudofoveata Cephalopoda ... Retrieved from " http://en.wikibooks.org/wiki/Dichotomous_Key/Mollusca
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/

Extractions: 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: ( 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).
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

Extractions: 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.
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/

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

Extractions: 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
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
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

Extractions: 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. 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
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

Extractions: 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
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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