Geometry.Net - Science: Echinodermata

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Translate this page O filo echinodermata é constituído por cerca de 7.000 espécies distribuídas emseis classes Crinoidea, Asteroidea, Ophiuroidea, Echinoidea, Holothuroidea
http://www.biomania.com.br/zoologia1/echinodermata.php

Extractions: Introdução As classes de Echinodermata divergiram evolutivamente ainda no Pré-Cambriano (Ubaghs, 1967), sendo que as atuais surgiram no início do Paleozóico, há cerca de 550-450 milhões de anos (Smith, 1992). O registro fóssil do grupo conta atualmente com cerca de 16 classes e mais de 13.000 espécies extintas (Hendler et al., 1995). Todos os representantes do filo são de vida livre, sendo raras as espécies comensais. Em geral, os sexos são separados, sem dimorfismo sexual externo, com exceção dos Concentricycloidea, que apresentam, inclusive, órgão copulatório. Algumas espécies passam por um estádio larval planctônico, enquanto outras são vivíparas. Apesar de raro entre os Echinodermata, o hermafroditismo tem sido relatado em algumas espécies. O alto poder de regeneração dos integrantes deste filo confere a algumas espécies a capacidade de se reproduzir assexuadamente por fissão, um processo de divisão do corpo que resulta em novos indivíduos completos e funcionais. Embora a grande maioria das espécies seja marinha, algumas toleram a água salobra. Podem ser encontrados em todos os oceanos, latitudes e profundidades, da zona entremarés às regiões abissais, sendo mais abundantes na região tropical do que nas águas polares.
Echinodermata
echinodermata. echinodermata include starfish, sea urchins, brittlestars and sea cucumbers. All echinoderms live in the sea, and
http://www.iverna.com/projects/animalkingdom/echinodermata.htm

Extractions: Animal kingdom Up Protozoa Porifera Coelenterata [ Echinodermata ] Mollusca Annelida Arthropoda Chordata Echinodermata The phylum Echinodermata includes starfish, sea urchins, brittle stars and sea cucumbers. All echinoderms live in the sea, and usually on the sea bed, where they creep around on suckered tube feet that look like hundreds of tiny legs. Only a few of them can swim or float. They mostly have fivefold symmetry, with arms or rays in multiples of five, and five teeth arranged in a circlet in their mouth. They eat different things. Many starfish are predators and eat things like molluscs and barnacles. One even eats coral. Lots of starfish turn their stomachs out through their mouth and digest food outside their body. Crinoids , also called sea lilies, are filter feeders like Porifera ; they suck seawater through themselves to extract food, while sea cucumbers ( holothurians ) scavenge for leftovers on the deep-sea bed. Sea urchins scrape algae from rocks to eat. They're called sea urchins because they're round and spiky like rolled-up hedgehogs - urchin is an old word for hedgehog.
Phylum Echinodermata
Phylum echinodermata. Introduction the name echinodermata.html. Clickhere to find out more about each of the five classes of echinodermata
http://www.personal.psu.edu/users/a/s/asi103/
Filo Echinodermata
echinodermata. Press here to search all DOP site. Press here for asimplified list. Crinoidea. Antedon bifida moroccana. Holothuroidea.
http://www.horta.uac.pt/species/Echinodermata/
BiologyBrowser
UCMP Berkeleyexhibit http//www.ucmp.berkeley.edu/echinodermata/crinoidea.html; Home Organism Invertebrata echinodermata Crinoids
http://www.biologybrowser.org/bb/Organism/Invertebrata/Echinodermata/index.shtml
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

Extractions: 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
Phyla Echinodermata, Hemichordata, & Chordata
Phylum echinodermata. Phylum Hemichordata. Phylum Chordata. Lab 8.Classification Phylum echinodermata. General Characteristics. What
http://www.biosci.ohio-state.edu/~eeob/eeob405/lab_8.html

Extractions: 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 Phylum Hemichordata Class Enteropneusta Characteristics Balanoglossus , acorn worms Phylum Chordata General Characteristics Subphylum Urochordata General Characteristics Class Ascidiacea Characteristics Molgula Ciona , sea squirts, tunicates Subphylum Cephalochordata Characteristics Branchiostoma (formerly known as Amphioxus or lancelet) Return to the
Phylum Echinodermata
Phylum echinodermata. Class Asteroidea (seastars). Dermasterias imbricata(leather star). This seastar has slightly webbed rays resembling
http://www.usfca.edu/fac-staff/chienp/phylum echinodermata.html

Extractions: Phylum Echinodermata Class Asteroidea (seastars) Dermasterias imbricata (leather star) This sea-star has slightly webbed rays resembling that of the Patiria miniata . Commonly found with 5 rays up to 12 cm in length, the leather star has a smooth, slippery skin that feels like wet leather. Its body color is blue-gray mottled with red or orange. It possesses a large, high disk at the center of the body and the tips of its arm are frequently upturned. The odor the leather star produces reminds many of the scent of strong garlic. Patiria miniata (bat star or sea bat) This stubby sea-star has usually 5 (sometimes 4-9) arms which measure up to 10 cm that resemble short webbed rays, which account for its common name. It varies in color from purple to red to yellow, and may be mottled or plain. Commonly found on or under rocks overgrown with surf-grass or algae, it can also be found attached to the sides of concrete harbor walls. Pisaster ochraceus (ochre or common sea-star) This abundant organism is a strong predator of shellfish in the marine community. Its arms extend up to 28 cm in length
Chapter 13: Phylum Echinodermata
Chapter 13 Phylum echinodermata. 13.1 Introduction. Phylum echinodermata containsover a dozen classes, about half of which are known only from the Paleozoic.
http://www.geo.arizona.edu/geo3xx/308/cha13.html

Extractions: 13.1 Introduction Echinoderms include common seashore animals such as seastars (also known as "starfish"), sand dollars and sea urchins, along with hundreds of more exotic forms. Their basic body plan is very different from other animals, but their closest living relatives are the Phylum Chordata (which includes the vertebrates). Echinoderms are exclusively marine, and most are benthic. They are present in virtually all marine environments of normal salinity, from the shallow intertidal to the abyssal zone. Many echinoderms are suspension feeders, while others are predators, scavengers and herbivores. A few are deposit feeders. Although the phylum is quite diverse, echinoderm physiology and their body plan display a surprising uniformity. They are characterized by an internal skeleton (endoskeleton) composed of calcitic plates (ossicles), and a water vascular system. The ossicles have a porous microstructure that is distinctive. A major feature of the skeleton is that the ossicles may increase in size during the growth of the animal. The main portion of the body skeleton, known as the theca or calyx in most echinoderms, may have accessory appendages (arms, rays, stem or brachioles). The water vascular system is an interesting system unknown in any other phylum. In ancient echinoderms, water circulated through pores in the body wall and was apparently important for respiration and feeding. More derived taxa have a specialized system where the water is drawn through a sieve plate (madreporite) by the action of cilia or internal pumping. The water enters a calcified tube and is directed to various parts of the animal. The water eventually fills small sacs inside external tube-like extensions (the tube feet or podia) along the rays and these, through hydraulic manipulation, may pulsate to move the animal through the environment or transport food to the mouth.
Phylum Echinodermata
Back to Animals. Phylum echinodermata (Sea Stars, Brittle Stars, Urchins, SeaCucumbers, Crinoids). CLASS, ORDER, FAMILY, GENUS/SPECIES, COMMON NAME. Asteroidea.
http://www.sms.si.edu/IRLSpec/Phyl_echino.htm

Extractions: (Sea Stars, Brittle Stars, Urchins, Sea Cucumbers, Crinoids) CLASS ORDER FAMILY GENUS/SPECIES COMMON NAME Asteroidea Paxillosida Luidiidae Luidia clathrata Asteroidea Paxillosida Luidiidae Luidia senegalensis Asteroidea Spinulosida Echinasteridae Echinaster sentus Asteroidea Spinulosida Echinasteridae Echinaster spinulosus Asteroidea Valvatida Oreasteridae Oreaster reticulatus Echinoidea Arbacioida Arbaciidae Arbacia punctulata Echinoidea Diadematoida Diadematidae Diadema antillarum Echinoidea Spatangoida Schizasteridae Moira atropos Echinoidea Temnopleuroida Toxopneustidae Lytechinus variegatus carolinus Echinoidea Temnopleuroida Toxopneustidae Tripneustes ventricosus Holothuroidea Apodida Synaptidae Epitomapta roseola Holothuroidea Apodida Synaptidae Leptosynapta inhaerens Holothuroidea Apodida Synaptidae Leptosynapta tenuis Holothuroidea Apodida Synaptidae Synaptula hydriformis Holothuroidea Aspidochirotida Holothuriidae Holothuria arenicola Holothuroidea Aspidochirotida Holothuriidae Holothuria cubana Holothuroidea Aspidochirotida Holothuriidae Holothuria grisea Holothuroidea Aspidochirotida
Echinoderms
Invertebrates in the Plankton echinodermata The echinoderms includethe familiar sea stars, brittle stars, and sea urchins, as
http://depts.washington.edu/fhl/zoo432/plankton/plechinodermata/plEchinoderms.ht

Extractions: Invertebrates in the Plankton: Echinodermata The echinoderms include the familiar sea stars, brittle stars, and sea urchins, as well as the more enigmatic sea cucumbers and crinoids. All species are marine, and most live in benthic habitats. Many of the animals have a planktonic larval stage, some of which may live in the plankton for months before settling as adults. Echinoid larvae are among the smaller meroplankton , approximately 0.01-0.03 mm in length, and are relatively rare to find in the plankton. Consequently, we borrowed some specimens from other researchers at FHL for these photographs. Asteroids Sea stars, or asteroids, develop through several larval stages, including this brachiolaria larva of the ochre seastar, Pisaster ochraceous . The larva uses its ciliated arms to sweep food into its mouth as it glides through the water column. The arms can also be used to supplement the larva's cilia-drive locomotion. Each arm has a glandular tip, with which the larva attaches itself to the substratum as it settles. The animal is then able to metamorphose into the familiar five-armed adult form.
Echinodermata - Main - Systema Naturae 2000
Life Eukaryotes Opisthokonts Metazoa Kingdom Animalia Eumetazoa Bilateria DeuterostomiaCoelomopora Phylum echinodermata Details Ref=®(o)Giribet et al
http://sn2000.taxonomy.nl/Main/Index/MajorTaxa/..\..\Classification\40663.htm

Extractions: Life "Eukaryotes" "Opisthokonts" Metazoa Kingdom Animalia Eumetazoa Bilateria Deuterostomia ... Coelomopora Phylum Echinodermata Details Ref=®(o)Giribet et al.,2000:551; Period=Cambrian to Present; N=4c12o47f200g210s4ss+8c4o90g5s Class Bothriocidara Ref=(o)TAMU,1997 Class Camptostromatoidea Ref=(o)1998 Class Coronoidea Ref=(o)TAMU,1997 Subphylum Crinozoa Details Ref=®(d)Parker,1982; Period=Middle Cambrian to Present; N=11g6s+18g3s Subphylum [ Pelmatozoa Details SN: Subphylum Crinozoa Blastozoa Ref=(o)1987; Period=Early Cambrian to Permian; N=+22g Class Concentricycloidea Details Ref=(u)Nielsen,1995; N=*(*) Subphylum Asterozoa Details Ref=®(d)Parker,1982; Period=Early Ordovician to Present; N=1c5o32f83g110s4ss+7g Class » Stylophora Details TF: Subphylum Homalozoa Class » Homoiostelea Details TF: Subphylum Homalozoa Class » Homostelea Details TF: Subphylum Homalozoa Class » Ctenocystoidea Details TF: Subphylum Homalozoa Ref=(o)TAMU,1997 Subphylum
Echinodermata
encyclopediaEncyclopedia echinodermata, ukI nOdûr'mutu PronunciationKey. echinodermata Gr.,=spiny skin, phylum of exclusively
http://www.infoplease.com/ce6/sci/A0816693.html

Extractions: Pronunciation Key Echinodermata [Gr.,=spiny skin], phylum of exclusively marine bottom-dwelling invertebrates having external skeletons of calcareous plates just beneath the skin. The plates may be solidly fused together, as in sea urchins , loosely articulated to facilitate movement, as in sea stars (starfish), or reduced to minute spicules in the skin, as in sea cucumbers . The skin usually has warty projections or spines, or both. Echinoderms display pentamerous radial symmetry, that is, the body can be divided into five more or less similar portions around a central axis. Unlike other radially symmetrical animals, they develop from a bilaterally symmetrical larva and retain some degree of bilateral symmetry as adults. There is no head; the surface containing the mouth (the underside, in sea stars and most others) is called the oral surface, and the opposite side, which usually bears the anus, the aboral surface. There are five living classes of echinoderms. Sections in this article:
Phylum Echinodermata
Phylum echinodermata Subphylum Asterozoa. (Ordovician Recent). 1 - 3. Phylumechinodermata Subphylum Asterozoa. Class Asteroidea. (Ordovician - Recent). 1.
http://www.cyber.vt.edu/geol3604/labs/labs/echinocards.htm

Extractions: Phylum Echinodermata Subphylum Asterozoa (Ordovician - Recent) Asterozoans express the classic pentameral symmetry of echinoderms. Each arm in the living asterozoan contains a radial branch of the water vascular system , which supports numerous paired tube feet which extrude through the underside of each arm. These tube feet form the ambulacra and are located in the middle of each arm along a features called the ambulacral groove . In many echinoderms, this groove carries small captured food particles to the mouth of the organism, although in some types the feature has been altered to serve other functions. The mouth is located where the radiating ambulacra intersect. The side with the mouth in echinoderms is defined as the oral side . The side opposite is called the aboral side . Depending on the group, the oral side can point up or down (in asterozoans, it points down). The water vascular system maintains communication with the ambient sea water through a group of pores in the madreporite , which in asterozoans is located on the aboral side, and can be easy to spot in some species (it looks like a drain cover in a sink). Like most echinoderms, the skeleton of asterozoans is composed of numerous small calcite plates called
Boggy's Links To Fossil Echinodermata
Fossil echinodermata Crinoids.com Store; Echinoid Home Page NHM; echinodermata;echinodermata; echinodermata recentes e fosseis do Brasil;
http://geologylinks.freeyellow.com/invech.html

Extractions: Books about fossil echinodermata 9th International Echinoderm Conference Abstracts Asteroidea BioQUEST Crinoid Education Project Comatulid Crinoid Pages ... FossilCrinoids.com - Site dedicated to disseminating Total Information about Mississippian Crinoids from the famous Crawfordsville, Indiana Crinoid Beds. This site will give up-to-date classification info, General info and a Gallery of Fine examples to view. Fossil Holothuroidea Webpage General Information Historical Geology Fossils - Phylum Echinodermata Holothuroidea ... Peer's ECHINOID Pages - A page where you can read about spiny creatures and geology in The Netherlands Phylum Echinodermata The Echinoderm Cabinet at PRI if you have any suggestion, comment, link to add, if you find unavailable link, mail to boggy
Phylum Annelida
echinodermata. Characteristics Spiny skin; Pentamarous symmetry; Oraland aboral surfaces; Endoskeleton; Water vascular system, maderporite
http://eebweb.arizona.edu/Marine/biology/echino.htm

Extractions: Echinodermata Characteristics: Classes: Asteroidea: commonly called sea stars Have 5 to 50 arms arranged around the central disc Endoskeleton modified into flexible plates Spines modified into pedicellariae Most are predatory (ex. Heliaster Ophiuroidea: 2,000 species, commonly known as brittle stars Five arms which are long, thin and very flexible (may branch extensively, as in basket stars) Possess jointed calcified plates called ossicles Most are deposit feeders although some may suspension feed Echinoidea: 900 species commonly called sea urchins, heart urchins and sand dollars Endoskeleton forms rigid test with moveable spines Graze on algae, encrusting organisms and dead organic matter Possess unique mouth parts known as an Aristotle's lantern Heart Urchins and Sand dollars have flattened bodies and shorter spines and are deposit feeders Holothuroidea: 900 species commonly called sea urchins, heart urchins and sand dollars
Echinodermata - A Key Topic In Science, Technology, And Knowledge Management --
Welcome to the Oxydex echinodermata Informatorium Sea Stars, Sea Urchins, andAllies Echinoderms of Florida and the Caribbean by Gordon Hendler, et al.
http://www.mueuvoe.com/of_lasting_interest/Echinodermata.html
Subject Listing For Echinodermata
Subject Listing for echinodermata. parent Cnidaria children Asteroidea(Starfish) Crinoidea (Sea Lilies/Feather Stars) Echinoidea
http://evonet.sdsc.edu/ROADS/subject-listing/echinoder.html
ISIS - Taxon Echinodermata
Taxon echinodermata. phylogenetics scale. Single nucleotide periodicitiesby fourier analysis in the echinodermata intron sequences.
http://isis.bit.uq.edu.au/phylo.phtml?phy=echinodermata
Echinodermata (starfish, Brittle Stars, Sea Urchins, Sea Cucumbers, Crinoids)
biodiversity explorer. Phylum echinodermata (starfish,brittle stars, sea urchins, sea cucumbers, crinoids).
http://www.museums.org.za/bio/echinoderms/

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