61. Zootaxa; Echinodermata echinodermata. GET Acrobat Reader for viewing PDF files. Associate Editor, Alan J.Dartnall (ajdartnall@bigpond.com) 17 Kepler St, Wulguru, Qld, 4811, Australia http://www.mapress.com/zootaxa/taxa/Echinodermata.html

ZOOTAXA Home Online issues Editor Author ... Subscription Echinodermata GET Acrobat Reader for viewing PDF files Associate Editor, Alan J. Dartnall (ajdartnall@bigpond.com 17 Kepler St, Wulguru, Qld, 4811, Australia Zootaxa 19 November 2003 ) 4 plates; 36 references Accepted: 7 November 2003 A new viviparous species of asterinid (Echinodermata, Asteroidea,Asterinidae) and a new genus to accommodate the species of pantropical exiguoid sea stars (PDF; 10KB) free Full article (PDF; 340KB) subscription required Zootaxa 13 November 2003 ) 7 plates; 33 references Accepted: 22 October 2003 New brittle-stars (Echinodermata: Ophiuroidea) from New Zealand waters D.G. MCKNIGHT (New Zealand) (PDF; 10KB) free Full article (PDF; 3100KB) subscription required Browse by author Browse by taxa Issues in 2001 ... Statistics about issues published Magnolia Press Published by Webmaster on 19 November, 2003

62. Phylum Echinodermata : Kingdom Animalia : Superkingdom Eukaryotae Kingdom Animalia Å Phylum echinodermata. Echinoderm humans. Scientificclassification Echinoderms make up the phylum echinodermata. http://www.bioproject.info/PARTICULAR_BIOLOGY/Superkingdom_Eukaryotae/Kingdom_An

WASP Website navigation : home PARTICULAR BIOLOGY Superkingdom Eukaryotae Kingdom Animalia ... Kingdom Animalia Phylum Echinodermata Echinoderm, common name for about 6000 living species constituting a phylum of marine animals, such as starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers. They usually show a superficial five-part radial symmetry, and generally are equipped with peculiar tube feet. The phylum name is derived from the spiny skin. The larval stages of this distinct and highly modified group are rather like those of the acorn worm, suggesting a relationship to chordate animals. In later development, however, the left side of the body grows at the expense of the right, and the adults are quite unlike any other animals. Structure An echinoderm such as the starfish typically has a mouth surrounded by five arms that bear minute, fleshy tube feet with which the animal clings and crawls. The tube feet are supported by a complex internal hydraulic system that is inflated with seawater. Some echinoderms, especially brittle stars, crawl or swim by moving their arms. Often, as in sea urchins, rows of tube feet extend along the body surface, and arms are absent. The spines are particularly well developed in sea urchins. The skeleton, made up of calcium carbonate, may form a large proportion of the body, or, as in some sea cucumbers, it may be greatly reduced. The fossil record shows that the five-rayed pattern is a late evolutionary acquisition, and deviations from it are common. The animals have a well-developed gut, but the nervous and circulatory systems are simple. Echinoderms are slow-moving and without complex behavior patterns.

63. Echinodermata: Cushion Stars (British Seas) echinodermata. CUSHION STARS. by Ron Barrett. Common Cushion Star.Asterina gibbosa. Rockpoolers who have visited the south and west http://ourworld.compuserve.com/homepages/BMLSS/cushion.htm

Echinodermata CUSHION STARS by Ron Barrett Common Cushion Star Asterina gibbosa Rockpoolers who have visited the south and west shores of Britain will be familiar with this small pentagonal sea star with its green, orange or blue-grey livery. It is locally common on south-west, west and north-west coasts. Bionomics Asterina gibbosa is found from the lower shore down to 30 metres. It prefers the underside of stones, in fairly exposed locations, where there is some sand and gravel and abundant organic matter on which it feeds. Aquarium study has shown that this animal is also a carrion feeder, quickly homing in on any dead carcass, even another cushion star. Tank reared specimens do not, generally, stay out of sight as they do in the wild. This is due to the light intensity, the animal being highly sensitive to bright sunlight. Low light aquaria are easily tolerated. Reproduction This species will readily reproduce in an aquarium environment, even in the presence of predators. Usually in late May or early June groups of individuals will be seen clustering together, a sign that egg laying is imminent. This can happen anywhere in the tank and the eggs may even be shed straight into the water. They number up to 1000, have a diameter of 0.5 mm and are usually pale orange. If not consumed they hatch in about 20 days. The parent takes no part in the proceedings once the eggs are laid. Asterina gibbosa is a protandrous hermaphrodite. It matures as a male at about 2 years old before entering the female phase 2 years later at about 20 mm diameter. It lives for up to 7 years.

64. Starfish & Related Animals (BMLSS) echinodermata. Starfishes, Sea Urchins, Sea Cucumbers and Related Invertebrates.echinodermata Greek echinos = sea urchin, derma = skin. http://ourworld.compuserve.com/homepages/BMLSS/Starfish.htm

Echinodermata Starfishes, Sea Urchins, Sea Cucumbers and Related Invertebrates Echinodermata Greek echinos = sea urchin, derma = skin. Marine animals that are radially symmetrical (most species) and contain a unique water vascular system, and tube feet that are used for movement, respiration, protection (spines) and assist in the capture of food. The Echinodermata are exclusively marine, and most species are intolerant of immersion in low salinity water. One remarkable observation is that they are rarely settled on by barnacles, mussels and other fouling organisms. Cushion Star, Asterina gibbosa , with the Shore Urchin, Psammechinus miliaris Photograph by Robert Jones (Trowbridge) The Cushion Star is only found on the shore and in the seas to the south and west of the British Isles. The Purple-tipped Shore Urchin has a more widespread distribution but is not particularly common between the tides, although it seem to be known from most rocky coasts where it is usually found attached to the underside of rocks near the low spring tide mark. MASS MORTALITY OF THE HEART URCHIN,

65. Echinodermata echinodermata Spiny-skinned animals, 219-225. Wray, GA, 1999- echinodermata- Spiny-skinned animals sea urchins, starfish, and their allies. http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/Deuterostoma/Echinodermata/Ech

Mikko's Phylogeny Archive Main Groups of Organisms Echinodermata - Spiny-skinned animals After Conway-Morris, 1993 and Wray, 1999 ["The Tree of Life"] o Echinodermata Arkarua Blastoidea Cystoidea Crinozoa (Sea lilies; merilijat) `o Eleutherozoa Edrioasteroidea Holothuroidea (merimakkarat) `+?- CONCENTRICYCLOIDEA Asterozoa STELLEROIDEA SOMASTEROIDEA GONIACTINIDA Platasteriidae Asteroidea Ophiuroidea OPHIOCISTIOIDEA `o ECHINOZOA Echinoidea (sea urchins; merisiilit) Reference(s): Botting, J. P., 2003: Llanvirn (Middle Ordovician) echinoderms from Llandegley rocks, central Wales. Conway Morris, S., 1993: The fossil record and early evolution of the Metazoa. Wray, G. A., 1999-: Echinodermata - Spiny-skinned animals: sea urchins, starfish, and their allies. http://tolweb.org/tree/ mikko DOT haaramo (AT) helsinki DOT fi / Last updated 2003-08-25 / http://www.fmnh.helsinki.fi/users/haaramo

66. Echinodermata. The Columbia Encyclopedia, Sixth Edition. 2001 The Columbia Encyclopedia, Sixth Edition. 2001. echinodermata. ( k´´n dûr´m t ) (KEY) Gr.,=spiny skin, phylum of exclusively http://www.bartleby.com/65/ec/Echinode.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia Cultural Literacy 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 Respectfully Quoted 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. Echinodermata k t KEY sea urchins , loosely articulated to facilitate movement, as in sea stars (starfish), or reduced to minute spicules in the skin, as in

67. Echinoderm - Wikipedia, The Free Encyclopedia Echinoderm. (Redirected from echinodermata). Echinoderms. Scientific classification.Kingdom Animalia. Phylum echinodermata. Classes. http://en.wikipedia.org/wiki/Echinodermata

Main Page Recent changes Edit this page Page history ... Printable version Not logged in Log in Help Other languages: Polski Deutsch Svenska Echinoderm (Redirected from Echinodermata Echinoderms Scientific classification Kingdom: Animalia Phylum: Echinodermata Classes Asteroidea (sea stars) Concentrcycloidea Crinoidea (sea lilies and feather stars) Echinoidea Holothuroidea (sea cucumbers) Ophiuroidea Echinoderms (Echinodermata) is a phylum of marine animals found in the ocean at all depths. This phylum dates back to the lower Cambrian period and represents about 7000 living species and 13000 extinct ones. 6 classes made it to the Modern Era: Asteroidea (asteroids / starfish): 1,500 species that capture prey for their own food. Concentricycloidea sea daisies ), have a unique water vascular system. Crinoidea (crinoids / feather stars): 600 species that are suspension feeders. Echinoidea (echinoids / sea urchins ): 1,000 species; members of that class have movable spines Holothuroidea sea cucumbers ): 1,000 species, elongated sluggish animals. Ophuiroidea (brittle stars and basket stars), the largest class of echinoderms

68. Echinodermata_Home GAULT echinodermata. On this page only a few of the representative echinodermataare illustrated by way of example of what can be found. http://www.ammonite.ws/Pages/Echinodermata/Echinodermata_Home.htm

GAULT ECHINODERMATA Next to the Foraminiferida and Ostracoda, disarticulated parts of the animals comprising the Echinodermata (echinoids, asteroids, ophiuroids, comatulids, roveacrinoids and isocrinids) are the most commonly found fossils in residues washed from bulk-samples. Complete but invariably crushed tests of the heart-shaped echinoid Hemiaster asterias Forbes and H. bailyi Forbes occur throughout the Lower Gault, most frequently in Beds III, VI and VII. The regular echinoid Polydiadema wiltshirei (Wright) is a Lower Gault species; and Typocidaris gaultinus (Forbes) is characteristic of Bed X. Columnals and other parts of the isocrinid Nielsenicrinus cretaceus (Leymerie) (= Pentacrinus fittoni of authors) are also found in Bed X. The mobile Comatulids Glenotremites aequimarginatus (Carpenter) and Paleocomaster leveni (Carpenter) occur in the Gault of Folkestone and the micro-crinoid Styracocrinus peracutus (Peck) is common in Beds III and X..

69. Echinodermata - 44 Of The Best Sites Selected By Humans Popularity, 3 Columns. Pages PZ, 4 Columns. echinodermata. CBEL Science Technology ( 44 links, last update 12 April 2004 ) * = new links http://www.cbel.com/echinodermata/

Pages A-G 2 Columns Pages H-O Order by Alphabet Ordered by Theme Order by Popularity 3 Columns Pages P-Z 4 Columns Echinodermata CBEL ( 44 links, last update: 12 April 2004 ) * = new links [Find on this page] Classification of the Extant Echinodermata Echinodermata Echinodermata Hub ... Sea and Sky: Echinoderms Crinoidea Charles Messings Crinoid Page Crinoid Creatures Crinoidea Echinoidea Mellita quienquesperforata Microscopic World of Urchin Development Sea Urchin Embryo Sea Urchin Embryology Echinoidea (part 2) Sea Urchin Extravaganza Sea Urchins The Echinoids Echinoidea Cidaroida Echinoidea Clypeasteroida Echinoidea Echinoida Echinoida Echinoidea Temnopleuroida Strongylocentrotus purpuratus Holothuroidea Athyonidium chilensis Cucumber Defenses Cucumber Sand Creatures Gamats Home Page ... Sea Cucumbers - Class Holothuroidea Holothuroidea (part 2) Sea Cucumbers - Taxing Problems WWF: The Galapagos: Critter of the Day: Sea ... Stelleroidea Madreporite Nexus Natural Perspective: Starfish (Class: Astero... Sea Stars Slime Star ... The Ophiuroidea Stelleroidea Forcipulatida Forcipulatida Stelleroidea Valvatida Oreaster reticulatus Help build the largest human-edited directory on the web.

70. Wirbellose Translate this page Deuterostomia (Chaetognatha u. echinodermata), 1. Chaetognatha (Pfeilwürmer) 2.echinodermata (Stachelhäuter) 3. Hemichordata 4. Chordata (Chordatiere). http://eos.bio.tu-darmstadt.de/newww/2003/spezzoo/echinodermata.htm

71. Phylum: Echinodermata http://faculty.uccb.ns.ca/~jfoulds/courses/invertebrate/echinodermata_files/fram

72. Fauna Iberica/Iberian Fauna Phylum Echinodermata (Metazoa) http://www.fauna-iberica.mncn.csic.es/htmlfauna/faunibe/zoolist/echinodermata.ht

73. ITIS Standard Report Page: Echinodermata Go to Print Version, echinodermata Klein, 1734 Taxonomic Serial No. 156857. Taxonomyand Nomenclature, Notes Reference for echinodermata, Publication(s) http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_val

74. The Starfish Sea-urchins And Allies (Phylum Echinodermata) An introduction to the biology, classification and ecology of Seacucmbers,Sea-stars, Sea-urchins and Starfish of the phylum echinodermata. http://www.earthlife.net/inverts/echinodermata.html

The Phylum Echinodermata Etymology:- From the Greek Echinos for half and Derma for skin. Characteristics of Echinodermata:- 1)Possess 5-rayed symmetry, mostly radial, sometimes bilateral. 2)Body has more than two cell layers, tissues and organs. 3)Body cavity a true coelom. 4)Most possesses a through gut with an anus. 5)Body shape highly variable, but with no head. 6)Nervous system includes a circum-oesophageal ring. 7)Has a poorly defined open circulatory system. 8)Possesses a water vascular system, which hydraulically operates the tube feet or feeding tentacles. 9)Without excretory organs. 10)Normally possesses a subepidermal system of calcareous plates 11)Reproduction normally sexual and gonochoristic. 12)Feeds on fine particles in the water, detritus or other animals. 13)All live marine environments. Because of their calcareous skeleton many echinoderms fossilise well and we have a good record of their evolutionary history derived from more than 20,000 fossil species. They first evolved about 600 million years ago in the Precambrian along with many of the other major phyla. The first echinoderms (called carpoids) did not have any radial symmetry which shows that this characteristic was acquired later in the group's evolutionary history. Echinoderms are often difficult animals to kill and many have well developed powers of regeneration. Early attempts to control the Crown-of-Thorns starfish by chopping it up into several pieces merely resulted in helping it disperse as each piece grew into a new animal. Echinoderms are protected from most predators by their spines, never-the-less some are eaten by other echinoderms and some by human beings. The gonads of Sea Urchins are eaten in several places around the world, both raw and cooked and are considered to be very tasty. Also in Asia the body wall of certain Sea Cucumbers is eaten, this contains over 50% digestible protein so it is valuable nutrition wise as well as tasty, it is called Trepang.

75. Phylum Echinodermata Phylum echinodermata. Phylum echinodermata. General Characteristics. What doesthe presence of a bilateral larva suggest about the evolution of this phylum? http://www.biosci.ohio-state.edu/~eeob/eeob405/labs/echinodermata.html

Phylum Echinodermata Phylum Echinodermata General Characteristics What does the presence of a bilateral larva suggest about the evolution of this phylum? Class Asteroidea Characteristics Asterias (sea star), live specimens In what way does the seastar's body plan seem surprising, considering its mobile life-style? Class Ophiuroidea Characteristics Gorgonocephalus (basket star), brittle stars, live specimens Class Echinoidea Characteristics Sea urchins, sand dollars, sea biscuits, live specimens Class Holothuroidea Characteristics Sclerodactyla and other sea cucumbers, live specimens Class Crinoidea Characteristics Antedon (sea lily), feather stars Return to the Animal Diversity and Systematics The Ohio State University Department of Evolution, Ecology, and Organismal Biology If you have questions, comments or suggestions regarding this site, please contact shardy.1@osu.edu Updated March 6, 2001

76. Dictionary Of Animals - Echinodermata Index. 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. Animals. echinodermata.Phylum of invertebrate animals, members of which are called echinoderms. http://www.tiscali.co.uk/reference/dictionaries/animalsplants/data/m0063556.html

Your browser does not support inline frames or is currently configured not to display inline frames. // Show bread crumbs navigation path. breadcrumbs('four'); //> DICTIONARIES Animals Computers Difficult Words ... Plants Frames not supported Frames not supported Index A B C D ... W X Y Z Animals Echinodermata Phylum of invertebrate animals, members of which are called echinoderms Helicon Publishing LTD 2000. makeButton("REFERENCE.DICTIONARIES","R1") makeButtonNoSize("REFERENCE.DICTIONARIES","R2") makeButton("REFERENCE.DICTIONARIES","R3") makeButton("REFERENCE.DICTIONARIES","R4") Your browser does not support inline frames or is currently configured not to display inline frames. servePixl("REFERENCE.DICTIONARIES"); //accipter 1x1 pixel

77. Echinodermata Lecture 4 Invertebrate Zoology Lecture Outlines Biology 310. Richard Fox Departmentof Biology Lander University. echinodermata Lecture 4. http://www.lander.edu/rsfox/310echin-4Lec.html

Invertebrate Zoology Lecture Outlines Biology 310 Richard Fox Department of Biology Lander University Echinodermata Lecture 4 Home Biol 310 Home Biol 310 Lab Biol 310 Lectures ... Echinoderm Images echin-4.html XI. REPRODUCTION *asexual and sexual reproduction *sexual by far the most common A. ASEXUAL *best developed in brittlestars *the disk divides (fission) *asteroids with regenerative powers *arm with 20% of disk can produce a new star B. SEXUAL *gonochoristic *external fertilization *both sexes release gametes into the sea * a few species brood; female retains eggs and embryos XII. DEVELOPMENT A. GENERAL *deuterostomes *radial, inderterminate cleavage *coeloblastula *gastrulation by invagination *enterocoelous coelom and mesoderm formation *blastopore becomes the anus B. LARVAE *dipleurula is the first larva *becomes a specialized larva for each class *larvae are planktotrophic *settle to bottom and undergo metamorphosis on suitable substratum *metamorphosis convertes bilateral larva to radial adult Fig 18.3 The characteristic larvae of the echinoderm classes. The dipleurula is in the center (Ruppert/Barnes, 1994). All the larvae are bilaterally symmetrical. echin38.gif

78. Wildlife Of Sydney - Sea Stars, Sea Urchins And Other Echinoderms Sea stars, sea urchins and other echinoderms echinodermata. Theechinoderms (Greek for spiny skin) include sea stars, sea urchins http://faunanet.gov.au/wos/group.cfm?Group_ID=15

79. Nearctica - Natural History - Echinodermata The living representatives of the echinodermata include the following superfamiliesCrinoidea (Sea Lilies and Feather Stars), Asteroidea (Starfish or Sea Stars http://www.nearctica.com/nathist/echino/echino.htm

Echinoderms Special Segments Butterflies of North America Conifers of North America Eastern Birds List of N.A. Insects Home Eastern Wildflowers General Topics Natural History Ecology Family Environment Evolution Home Education Home Conservation Geophysics Paleontology Commercial Organizations Buy Books about Marine Invertebrates The living representatives of the Echinodermata include the following superfamilies: Crinoidea (Sea Lilies and Feather Stars), Asteroidea (Starfish or Sea Stars), Ophiuroidea (Brittle Stars and Basket Stars), Echinoidea (Sea Urchins and Sand Dollars), and the Holothuroidea (Sea Cucumbers). Introduction to the Echinodermata . University of California Museum of Paleontology, Berkeley. Information about both living and fossil echinoderms including material about their life histories, ecology, systematics, morphology and fossil record. A good site, but with a strong paleontological emphasis. The CAS Echinoderm Webpage . California Academy of Science. A good site for the echinoderms including some information and many photographs. This site has links to other echinoderm resources on the web. Echinodermata . Biology 404L, Donald W. Duszynski, Univeristy of New Mexico. An introduction to the Echinodermata with a gallery of pictures of various species.

80. Science Search > Echinodermata Search for Current Category What s new Top Searches Statistics ScienceNews, Home. Current location Biology Zoology echinodermata, http://www.science-search.org/index/Biology/Zoology/Echinodermata/

Search for: Current Category Everything What's new Top Searches Statistics Science News ... Home Current location: Biology Zoology > Echinodermata The California Academy of Sciences Echinoderm Web Page Abstracts from the Ninth International Echinoderm Conference, with links to other Echinodermata resources. http://www.calacademy.org/research/izg/echinoderm/ detailed information Rating: [6.00] Votes: [1054] The Echinoderm Newsletter Information about conferences and publications of interest to echinoderm biologists, and addresses of echinoderm researchers. http://www.nmnh.si.edu/gopher-menus/TheEchinodermNewsletter.html detailed information Rating: [6.00] Votes: [536] Echinoderm Envenomations Offers detailed information about venomous echinoderms, including pictures of poisonous species. http://www.emedicine.com/emerg/topic158.htm detailed information Rating: [5.00] Votes: [1893] About Us Contact Us Site Guide Add Your Site ... Add Science Search to Your Web Site The Science Search Directory is based on DMOZ. Science Search has modified and enhanced this data. Submitting to DMOZ: Help build the largest human-edited directory on the web.

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