1. Introduction To The Echinodermata Overview of the systematics and ecology of starfish, brittle stars, sea cucumbers, sea urchins, and Category Science Biology Flora and Fauna Animalia echinodermata......Introduction to the echinodermata. . . . from starfish to sea cucumbers.. . Click on the buttons below to find out more about the echinodermata. http://www.ucmp.berkeley.edu/echinodermata/echinodermata.html

Introduction to the Echinodermata . . . from starfish to sea cucumbers. . . A nyone who has been to the beach has probably seen starfish or sand dollars. The more intrepid beachcomber may find brittle stars sea cucumbers , or sea urchins. These and many other organisms, living and extinct, make up the Echinodermata, the largest phylum to lack any freshwater or land representatives. Most living echinoderms, like this sand dollar from Baja California, are pentameral ; that is, they have fivefold symmetry, with rays or arms in fives or multiples of five. However, a number of fossil echinoderms were not pentameral at all, and some had downright bizarre shapes. Echinoderms have a system of internal water-filled canals, which in many echinoderms form suckered "tube feet", with which the animal may move or grip objects. Click on the buttons below to find out more about the Echinodermata Images and information about various living California echinoderms are available through the DELTA Project of the California State University system. Visit the Echinoderm Homepage at the California Academy of Sciences for additional information and links. Or peruse the

2. Morphology Of Echinodermata echinodermata Morphology. Echinoderms have been compared to living, moving castles. TheInvertebrates. Volume IV echinodermata. McGrawHill, New York. http://www.ucmp.berkeley.edu/echinodermata/echinomm.html

Echinodermata : Morphology Echinoderms have been compared to living, moving castles. Castles are made of interlocking blocks, with a single main entrance and numerous slit windows for air and for defense. Echinoderm skeletons are made up of interlocking calcium carbonate plates and spines. This skeleton is enclosed by the epidermis and is thus an endoskeleton. In some, such as sea urchins, the plates fit together tightly. In others, such as starfish, the plates are more loosely bound, and in sea cucumbers the plates are usually microscopic. But whatever their shape, the plates of echinoderms have a very typical microstructure: electron microscopy reveals them to be, not solid blocks, but fine networks of calcium carbonate forming a structure known as stereom . Each skeletal element of an echinoderm is actually a single crystal of calcium carbonate, very finely branched and structured. Click on this image of a sea urchin plate to view the entire image! Image taken by the UCMP Environmental Scanning Electrom Microscope Between the skeletal plates, a number of special structures protrude, with which the echinoderm breathes, moves, and defends itself. Typically, these are tube feet, pedicellaria, and gills. All echinoderms have a

3. Classification Of The Extant Echinodermata Describes the taxonomic groupings and provides links to images of some taxa. http://www.calacademy.org/research/izg/echinoderm/classify.htm

Classification of the Extant Echinodermata This list also contains links to images. We welcome updates or corrections to this list. Crinoidea Isocrinida Isocrinidae Millericrinida Apiocrinidae Bathycrinidae Bourgueticrinidae Phrynocrinidae Cyrtocrinida Holopusidae Hyocrinidae Comatulida Comasteridae Colobometridae Eudiocrinidae Himerometridae Mariametridae Zygometridae Aporometridae Notocrinidae Asterometridae Calometridae Charitometridae Ptilometridae Thalassometridae Tropiometridae Antedonidae Apocrinidae Atelecrinidae Pentametrocrinidae Asteroidea (after Blake, 1987 and Clark and Downey, 1992) Paxillosida Astropectinidae 25 valid genera Ctenodiscididae This is a monotypic family including only the genus Ctenodiscus with five species australis caudatus crispatus orientalis and procurator Goniopectinidae 3 valid genera. Luidiidae This family is monotypic containing only the genus Luidia . Members of this family are burrowers into sandy substrates. Members of this family have anywere from 5 to 15 arms. Several species in this taxa are of considerable size. One species Luidia superba from the Galapagos is one of the largest asteroids in the world.

4. The CAS Echinoderm Web Page Abstracts from the Ninth International Echinoderm Conference, with links to other echinodermata resources. http://www.calacademy.org/research/izg/echinoderm/

Introduction to the Echinodermata The Echinodermata is a phylum of exclusively marine invertebrates with a fossil record extending back to the Precambrian. The echinoderm clade is supported by a number of unique features, including a water vascular system a system of endoskeletal elements (arising from mesoderm) composed of a calcareous meshwork called stereom basic 5-part symmetry (often modified later in ontogeny) expressed in the development of 5 primary lobes in the hydrocoel of the rudiment construction of ambulacra by the addition of new plates adjacent to the terminal (or ocular) plate that marks the ends of the radial canals a diffuse sub-epithelial nervous system Other Echinoderm Resources Summary and Taxonomy of the Echinodermata Links to other Echinoderm web resources and Echinoderm research links Links to other Invertebrate Zoology and Paleontology resources Abstracts from the Ninth International Echinoderm Conference Abstracts from the 9th IEC The 9th International Echinoderm Conference was held in San Francisco at the Seven Hills Conference Center on the campus of San Francisco State University on August 5th to Friday August 9th, 1996. Nearly 250 abstracts are available for browsing. Proceedings from the 9th IEC have now been published by Balkema, Rotterdam. Echinoderm Research at the California Academy of Sciences Dr. Rich Mooi

5. Phylum Echinodermata Some characteristics of the phylum that includes starfish, sea cucumbers, sea urchins, crinoids and brittle stars. http://animaldiversity.ummz.umich.edu/echinodermata.html

The University of Michigan Museum of Zoology Animal Diversity Web About us ... Glossary Phylum Echinodermata Some characteristics of the Phylum: calcareous endoskeleton composed of separate plates or ossicles pentaradial symmetry (derived from bilaterally symmertrical larval forms) deuterostomous development water vascular system ("tube feet") gut complete (but secondarily lost in some species) decentralized nervous system marine indirect or direct development Species included in the Animal Diversity Web: Class Crinoidea (sea lilies) Davidaster rubiginosa (Black With Yellow-Tip Crinoid) -p- Class Asteroidea (sea stars - "starfish") Class Ophiuroidea (brittle stars) Class Echinoidea (sea urchins) Astropyga magnifica (Magnificent Urchin) -p- Tripneustes ventricosus (West Indian Sea Egg) -p- Class Holothuroidea (sea cucumbers) Isostichopus badionotus (3-Rowed Sea Cucumber) -p- Accounts marked with a p contain pictures, t contain narrative text (student authored), a contain anatomical still/QTVR images, and s contain digitized sound clips. Last updated 4 April 1997 Questions or comments?

6. Echinodermata Hub Echinoderm links. http://www.projectlinks.org/echinodermata/

Welcome to Echinodermata Hub site. On this site, you will find the most informational and up-to-date links about Echinodermata. Cell Line Screening Data for Families in the Phylum Echinodermata - by the Natural Products Branch of the Developmental Therapeutics Progam, Division of Cancer Treatment, Diagnosis and Centers, National Cancer Institute. The echinodermata - starfish, brittle stars, sea urchins, sand dollars, sea cucuambers, aand crinoiads - from Columbia University. Echinodermata - Spiny-skinned animals: sea urchins, starfish, and their allies - by Gregory A. Wray , Duke University Department Of Zoology. Echinodermata Lesson - by Tim Lynch. Phylum Echinodermata - by the University of Michigan Museum of Zoology. Phylum Echinodermata – echinoderms - by The University of Alabama Center for Communication and Educational Technology. Phylum Echinodermata - by MEER (Marine and Environmental Education and Research). Phylum Echinodermata - Subphylum Asterozoa (Ordovician - Recent) - from Virginia Polytechnic Institute and State University. Phylum Echinodermata - sea stars, brittle stars, sand dollars, sea urchins, sea cucumbers, crinoids/sea lilies.

7. Echinodermata - Introduction The echinodermata, (from the Greek meaning spiny skin), is a phylum containing about 6000 species, and constitutes the only major group of deuterostome* invertebrates. http://www-biol.paisley.ac.uk/courses/Tatner/biomedia/units/echi1.htm

Unit: Echinodermata 1 Introduction ECHINODERMATA The Echinodermata, (from the Greek meaning spiny skin), is a phylum containing about 6000 species, and constitutes the only major group of deuterostome* invertebrates. Since most echinoderms possess some form of calcareous* skeleton, we have a very good fossil record of the evolution of this group, although many aspects of their evolution are far from clear. Their relationship to other phyla is also poorly understood, for the echinoderms were already well differentiated at the onset of the Palaeozoic* era, and their distinctive characteristics seem to be unparalleled in any other group. The echinoderms are a large and successful, entirely marine group of coelomate* animals. They are mainly free-living, but fossil evidence indicates that they are derived from sessile* ancestors and they have shown two mutually opposing trends. The first trend has been towards a free-living habit, with the development of jaws and oral appendages for seeking out food. The second, more primitive trend, has been to adopt a sessile habit and become attached to the substratum by the aboral* surface or stalk. The crinoids (

8. BIOSIS | Resource Guide | Echinodermata Checklist of the Metazoa part 5, echinodermata classification scheme. Classification of the Extant echinodermata http://www.biosis.org/zrdocs/zoolinfo/grp_ech.htm

Pull Down for Destinations BIOSIS Previews Zoological Record MethodsFinder Index to Organism Names Internet Resource Guide for Zoology User Support Search Sitemap Index Help with this Site Resource Guide Introduction About the Resource Guide Awards Latest Additions ... Search Echinodermata Links to miscellaneous resources of use in the study of echinoderms (starfish, sea urchins, sea cucumbers and sea lilies). Animal Diversity Web University of Michigan Museum of Zoology CAS Echinoderm Webpage taxonomy, links, research and holdings, California Academy of Sciences Checklist of the Metazoa: part 5, Echinodermata classification scheme Classification of the Extant Echinodermata California Academy of Sciences Crinoidea: sea lilies and feather stars Tree of Life Crinoids UCMP Berkeley exhibit Crown-of-thorns starfish Australian Institute of Marine Science (AIMS) reef monitoring project research information Echinoderm Links extensive listing from California Academy of Science Echinoderm Newsletter produced annually for 30 years to provide a service to those scientists around the world who study echinoderms, includes research interests, announcements, contacts and many other topics of interest to the echinoderm community

9. Echinodermata echinodermata. Summary phylogenetic hypothesis of the echinodermata, based on Davidand Mooi (1997), Littlewood et al. (1997), and Sumrall and Sprinkle (1997). http://tolweb.org/tree?group=Echinodermata&contgroup=Deuterostomia

10. Jeff's Nudibranch Site And Coral Reef Gallery Devoted primarily to the nudibranchs of the Philippines, but also contains information and photographs about crinoids (echinodermata) and reef organisms in general. http://divegallery.com/

...an informative site featuring a modest collection of original underwater photos from my travels in the Philippine Islands Welcome!.......over 220 full-size underwater images in numerous galleries, arranged for easy browsing...........for specific inquiries try using the search link on this page...............click on one of the above samples for a preview.........see some short sea dragon video clips in Gallery IV............use the hyperlinks on the large table below for accessing MANY more underwater photos............thanks for visiting............I enjoy reading and answering all your e-mails...............if you have questions, SLUGgestions, comments or can assist with species names please e-mail me using the hyperlink at the bottom of the page or at:seaslugs@hotmail.com....... So , you ask... frequently asked questions books about nudibranchs postage stamps featuring nudibranchs ....wallpaper (size 800x600) for your computer: clownfish clownfish and shrimp leafy sea dragon nudibranch ... Search this site Please choose a link from the table below to see dozens of underwater creatures!

11. Redirect To New ToL Page echinodermata. Spinyskinned animals sea urchins, starfish, and their allies http://phylogeny.arizona.edu/tree/eukaryotes/animals/echinodermata/echinodermata

The Tree of Life Web Project has moved. If you are not redirected automatically, please click the following link for the new page: New Tree of Life page

12. Untitled Document Photographs of members of each class. http://204.154.117.95/AnimalBiology/Echinodermata/Echinodermata.html

Phylum Echinodermata To: Down load Echinodermata power point presentation Class: Crinoidea Class: Asteroidea Class: Ophiuroidea Class: Echinoidea Class: Holothuroidea

13. Page Has Been Relocated echinodermata. Cambrian to Recent http://www.kheper.auz.com/gaia/biosphere/echinoderms/echinodermata.htm

This page has been relocated you will be moved to the new locality in a few seconds otherwise click here

14. Untitled Document Photographs of members of each class.Category Science Biology Flora and Fauna Animalia echinodermata......Phylum echinodermata, To Down load echinodermata power point presentationClass Crinoidea, Class Asteroidea, Class Ophiuroidea, Class Echinoidea, http://www.biology.ucok.edu/AnimalBiology/Echinodermata/Echinodermata.html

Phylum Echinodermata To: Down load Echinodermata power point presentation Class: Crinoidea Class: Asteroidea Class: Ophiuroidea Class: Echinoidea Class: Holothuroidea

15. Echinodermata Characteristics and phylogeny of the spinyskinned animals sea urchins, starfish, and their allies. http://tolweb.org/tree?group=Echinodermata&contgroup=Metazoa

16. Echinoderms (starfish, Brittle Star, Sea Urchin, Feather Star, Sea Cucumber) s of the major species of echinodermata (starfish, brittle star, sea urchin, feather star, sea cucumber) with illustrations and links to photos....... http://www.starfish.ch/reef/echinoderms.html

dasriffdasriffdasriffdasriffdas riffdasriffdasriffdasriffdasriffdasriffdasriffdasriffdasriffdasriffdas Invertebrate – Animals that lack a back-bone (vertebrae). Invertebrates Multi-celled animals (Metazoa) Top End ECHINODERMS 5 pages with 110 photos of echinoderms ECHINODERMS (Echinodermata) There are 5 related classes in the phylum Echinodermata (the Latin name means "spiny-skinned"): Sea star or starfish (Asteroidea) Brittle stars, basket stars, serpent stars (Ophiuroidea) Sea urchins, heart urchins and sanddollars (Echinoidea) Holothurians or sea cucumbers (Holothuroidea) ... Feather stars and sea lilies (Crinoidea) Characteristics of Echinoderms Echinoderms are characterized by radial symmetry, several arms (5 or more) radiating from a central body (= pentamerous). The body actually consists of five equal segments, each containing a duplicate set of various internal organs. They have no heart, brain, nor eyes. Their mouth is situated on the underside and their anus on top (except feather stars, sea cucumbers and some urchins). Echinoderms have tentacle-like structures called tube feet with suction pads situated at their extremities. These tube feet are hydraulically controlled by a remarkable vascular system. This system supplies water through canals of small muscular tubes to the tube feet (= ambulacral feet). As the tube feet press against a moving object, water is withdrawn from them, resulting in a suction effect. When water returns to the canals, suction is released. The resulting locomotion is generally very slow.

17. Zoological Record Systematic Thesaurus - Echinodermata Zoological Record Systematic Thesaurus echinodermata Return to ZRThesaurus Home Page Return to Systematic Hierarchy Top Page http://www.biosis.org/zrdocs/zr_thes/systthes/echinodermata.html

Zoological Record Systematic Thesaurus Echinodermata Return to ZR Thesaurus Home Page Return to Systematic Hierarchy Top Page 1....Echinodermata 2.......Blastoidea 2.......Camptostromatoidea 2.......Concentricycloidea 2.......Crinoidea 2.......Ctenocystoidea 2.......Cyamoidea 2.......Cyclocystoidea 2.......Cycloidea 2.......Cystoidea 2.......Diploporita 2.......Echinoidea 2.......Edrioasteroidea 2.......Edrioblastoidea 2.......Eocrinoidea 2.......Helicoplacoidea 2.......Holothurioidea 2.......Holothuroidea 2.......Homoiostelea 2.......Homostelea 2.......Lepidocystoidea 2.......Machaeridia 2.......Ophiocistioidea 2.......Ophiocystioidea 2.......Parablastoidea 2.......Paracrinoidea 2.......Rhombifera 2.......Stelleroidea 3..........Asteroidea 3..........Neoasteroidea 3..........Ophiuroidea 3..........Somasteroidea 2.......Stylophora Return to ZR Thesaurus Home Page Return to Systematic Hierarchy Top Page

18. The Ophiuroidea A brief introduction to modern and ancient brittle stars by UCMP Berkeley. http://www.ucmp.berkeley.edu/echinodermata/ophiuroidea.html

Introduction to the Ophiuroidea Ophiuroids are a large group (over 1600 species) of echinoderms that includes the brittle stars (Ophiurida) and basket stars (Euryalida). The more familiar Ophiurida, or brittle stars, usually have five arms and superficially resemble true starfish (Asteroidea). However, brittle stars have long, flexible arms (hence the other common name for ophiuroids, "snake stars" and a central, armored, disk-shaped body that is clearly demarcated from the arms. Instead of crawling on hundreds of tube feet like starfish, brittle stars move fairly rapidly by wriggling their arms. These agile arms are supported by an internal skeleton of calcium carbonate plates that superficially look like vertebrae, and that are in fact called vertebral ossicles . These are moved by a system of muscles and linked together by ball-and-socket joints. The body and arms are also protected by calcium carbonate plates, and the arms generally bear delicate spines. Basket stars (Euryalida) have a similar structure to brittle stars, although they are usually larger. However, their arms are very highly forked and branched, and even more flexible than those of brittle stars. Ophiuroids can be found in most parts of the world, from the Arctic and Antarctic to the tropics. Ophiuroids are common in many shallow-water marine habitats, and include a few species which can adapt to brackish water, which is quite unusual for echinoderms. Ophiuroids are dominant in many parts of the deep sea, where in certain regions the bottom may swarm with brittle starts. Basket stars also tend to live in deeper water. Most ophiuroids are scavengers and detritus feeders, although they also prey on small live animals such as small crustaceans and worms. Some, in particular the basket stars, filter-feed on plankton with their arms.

19. About - Echinodermata echinodermata Guide picks. Members of the phylum echinodermata include sea lilies,sea daisies, brittle stars, sea urchins, sand dollars, and sea cucumbers. http://animals.about.com/cs/echinodermata/

zfp=-1 About Homework Help Animals/Wildlife Search in this topic on About on the Web in Products Web Hosting Animals/Wildlife with Laura Klappenbach Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Learning center Conservation toolbox Wild about books ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Echinodermata Guide picks Members of the phylum Echinodermata include sea lilies, sea daisies, brittle stars, sea urchins, sand dollars, and sea cucumbers. These interesting animals exhibit pentaradial symmetry - they have five axes of symmetry. Morphology of Echinodermata Learn about the structure and anatomy of echinoderms, a group of animals who have a unique water vascular system. Sea Cucumbers The worm-like sea cucumber does not closely resemble other echinoderms but on closer inspection is found to have five-rayed symmetry, a distinguishing characteristic of echinoderms. Phylum Echinodermata This concise list of echinoderm characteristics provides a useful quick-reference guide to this group of animals. Echinodermata - Cambrian to Recent Discover when each of the different classes of echinoderms appeared on earth. Read about the characteristics and evolution of these interesting animals.

20. Echinodermata - Biomedia Zoology Museum echinodermata. Unit 1 Introduction. Two features of the BEHAVIOUR of holothuriansare of particular interest. Unit 7 - Key features of echinodermata. http://www-biol.paisley.ac.uk/biomedia/text/txt_echino.htm

Skip navigationals BIOMEDIA MUSEUM BIOLOGICAL SCIENCES University of Paisley Glossary* Gallery^ ECHINODERMATA Unit 1 - Introduction The Echinodermata, (from the Greek meaning spiny skin), is a phylum containing about 6000 species, and constitutes the only major group of deuterostome invertebrates. Since most echinoderms possess some form of calcareous skeleton, we have a very good fossil record of the evolution of this group, although many aspects of their evolution are far from clear. Their relationship to other phyla is also poorly understood, for the echinoderms were already well differentiated at the onset of the Palaeozoic era, and their distinctive characteristics seem to be unparalleled in any other group. The echinoderms are a large and successful, entirely marine group of coelomate animals. They are mainly free-living, but fossil evidence indicates that they are derived from sessile ancestors and they have shown two mutually opposing trends. The first trend has been towards a free-living habit, with the development of jaws and oral appendages for seeking out food. The second, more primitive trend, has been to adopt a sessile habit and become attached to the substratum by the aboral surface or stalk. The crinoids (feather stars^) are the only surviving group whose members are primarily sessile. General agreement has yet to be reached on many points of echinoderm classification, as may be seen from the alternative classification to be found in different textbooks. However, most workers divide the living echinoderms into four classes;

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 1     1-20 of 100    1  | 2  | 3  | 4  | 5  | Next 20