1. Introduction To The Echinodermata Introduction to the echinodermata. . . from starfish to sea cucumbers. . . A nyone who has been to the beach has probably seen starfish or sand dollars. 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. Echinoderm - Wikipedia, The Free Encyclopedia Echinoderms (Phylum echinodermata) are a phylum of marine animals. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. http://en.wikipedia.org/wiki/Echinoderm

Echinoderm From Wikipedia, the free encyclopedia Jump to: navigation search This article includes a list of references , but its sources remain unclear because it has insufficient inline citations Please help to improve this article by introducing more precise citations where appropriate (May 2009) This article may be too technical for most readers to understand . Please improve this article to make it understandable to non-experts , without removing the technical details. (March 2010) Echinoderm Fossil range: Cambrian–recent PreЄ O S D ... Haeckel 's diagrams of Asteroidea specimens Scientific classification Kingdom: Animalia Subkingdom: Eumetazoa Superphylum: Deuterostomia Phylum: Echinodermata Klein Homalozoa Homostelea Homoiostelea ... Paracrinoidea Regnéll, 1945 Cystoidea von Buch, 1846 Asterozoa Ophiuroidea Asteroidea Echinozoa ... Jaekel † = Extinct Echinoderms (Phylum Echinodermata ) are a phylum of marine animals . Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone . Aside from the problematic Arkarua , the first definitive members of the phylum appeared near the start of the Cambrian period.

3. Echinoderm (animal Phylum) -- Britannica Online Encyclopedia echinoderm (animal phylum), any of a variety of invertebrate marine animals belonging to the phylum echinodermata, characterized by a hard, spiny covering or skin. Beginning with http://www.britannica.com/EBchecked/topic/177910/echinoderm

document.write(''); Search Site: Advanced Search With all of these words With the exact phrase With any of these words Without these words Home SHOP BROWSE BLOG ... HELP Username: Password: Remember me Forgot your password? Help Email " is the e-mail address you used when you registered. Password " is case sensitive. If you need additional assistance, please contact customer support Enter the e-mail address you used when enrolling for Britannica Premium Service and we will e-mail your password to you. echinoderm My Britannica CREATE MY echinoderm NEW ARTICLE ... SAVE echinoderm Table of Contents: echinoderm Article Article General features General features - Size range and diversity of structure Size range and diversity of structure - Distribution and abundance Distribution and abundance - Importance Importance - - Role in nature Role in nature - - Relation to human life Relation to human life Reproduction and life cycle Reproduction and life cycle - Asexual reproduction Asexual reproduction - Sexual reproduction Sexual reproduction - Development Development Life activities Life activities - Food and feeding habits Food and feeding habits - Locomotion Locomotion - - Righting response Righting response - - Burrowing Burrowing - Ecology Ecology - - Habitats Habitats - - Predation and defense Predation and defense - - Aggregation Aggregation Form and function of external features Form and function of external features - General features General features - Symmetry and body form Symmetry and body form - Skeleton Skeleton Form and function of internal features

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

Overview News Technology Conditions of Use ... Home Kingdom Animalia Phylum Echinodermata Phylum Echinodermata echinoderms Information Pictures Specimens Classification editLink('skunkworks/.accounts/eb5b0032-0088-4f60-b1e0-53e33735b932') 2010/10/09 01:19:06.354 GMT-4 By Renee Sherman Mulcrone Kingdom: Animalia Phylum: Echinodermata Members of this Phylum Diversity Echinodermata has approximately 7000 described living species and about 13,000 extinct species known from the fossil record. This phylum is the largest without any freshwater or terrestrial forms. Brusca and Brusca, 2003 Waggoner, 1999 Geographic Range Mainly a marine group, echinoderms are found in all the oceans. Brusca and Brusca, 2003 Biogeographic Regions: arctic ocean ; indian ocean; atlantic ocean pacific ocean ; mediterranean sea. Habitat Except for a few species which inhabit brackish waters, all echinoderms are benthic organisms found in marine environments. Echinoderms inhabit depths ranging from shallow waters at tide lines to the deep sea. Barnes, 1987 Brusca and Brusca, 2003 University of Alabama Center for Communication and Educational Technology, 2000 Waggoner, 1999 These animals are found in the following types of habitat: temperate tropical polar saltwater or marine Aquatic Biomes: brackish water Other: intertidal or littoral Systematic and Taxonomic History Echinoderm means "spiny skin.". Because of its abundant fossil record, up to 25 classes have been recognized. A traditional hypothesis of the

5. Echinodermata 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 http://tolweb.org/Echinodermata

Under Construction Containing Groups Deuterostomia Bilateria Animals Eukaryotes ... Life on Earth Other Deuterostomia Echinodermata Hemichordata Chordata Subgroups Crinoidea Asteroidea Somasteroidea Holothuroidea Echinodermata Spiny-skinned animals: sea urchins, starfish, and their allies Gregory A. Wray 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

6. Deuterostome - Wikipedia, The Free Encyclopedia The phylum Chaetognatha (arrow worms) may also belong here. Extinct groups may include the phylum Vetulicolia. echinodermata, Hemichordata and Xenoturbellida form the clade http://en.wikipedia.org/wiki/Deuterostomia

Deuterostome From Wikipedia, the free encyclopedia   (Redirected from Deuterostomia Jump to: navigation search Deuterostomes Fossil range: Late Ediacaran – Recent PreЄ O S D ... Sea cucumbers and other echinoderms are deuterostomes. Scientific classification Kingdom: Animalia Subkingdom: Eumetazoa (unranked): Bilateria Superphylum: Deuterostomia Grobben Phyla Chordata Hemichordata Echinodermata Xenoturbellida ... Vetulicolia Deuterostomes (taxonomic term: Deuterostomia ; from the Greek: "second mouth") are a superphylum of animals . They are a subtaxon of the Bilateria branch of the subregnum Eumetazoa , and are opposed to the protostomes . Deuterostomes are distinguished by their embryonic development ; in deuterostomes, the first opening (the blastopore ) becomes the anus , while in protostomes it becomes the mouth . Deuterostomes are also known as enterocoelomates because their coelom develops through enterocoely There are four extant phyla of deuterostomes: Phylum Chordata vertebrates and their kin) Phylum Echinodermata sea stars sea urchins sea cucumbers , etc.) Phylum Hemichordata acorn worms and possibly graptolites Phylum Xenoturbellida (2 species of worm-like animals) The phylum Chaetognatha (arrow worms) may also belong here. Extinct groups may include the phylum

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

8. Echinodermata In - Dictionary And Translation echinodermata. Dictionary terms for echinodermata, definition for echinodermata, Thesaurus and Translations of echinodermata to Chinese, English, French, Italian, Spanish, Dutch http://www.babylon.com/definition/Echinodermata/

9. Echinoderms 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 http://depts.washington.edu/fhl/zoo432/plankton/plechinodermata/plEchinoderms.ht

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. Ophiuroids The brittle stars, or ophioroids, have a distinctive larval form known as the

10. ADW: Echinodermata: Information echinodermata has approximately 7000 described living species and about 13,000 extinct species known from the fossil record. This phylum is the largest without any freshwater or http://animaldiversity.ummz.umich.edu/site/accounts/information/Echinodermata.ht

Overview News Technology Conditions of Use ... Home Kingdom Animalia Phylum Echinodermata Phylum Echinodermata echinoderms Information Pictures Specimens Classification editLink('skunkworks/.accounts/eb5b0032-0088-4f60-b1e0-53e33735b932') 2010/10/09 01:19:06.354 GMT-4 By Renee Sherman Mulcrone Kingdom: Animalia Phylum: Echinodermata Members of this Phylum Diversity Echinodermata has approximately 7000 described living species and about 13,000 extinct species known from the fossil record. This phylum is the largest without any freshwater or terrestrial forms. Brusca and Brusca, 2003 Waggoner, 1999 Geographic Range Mainly a marine group, echinoderms are found in all the oceans. Brusca and Brusca, 2003 Biogeographic Regions: arctic ocean ; indian ocean; atlantic ocean pacific ocean ; mediterranean sea. Habitat Except for a few species which inhabit brackish waters, all echinoderms are benthic organisms found in marine environments. Echinoderms inhabit depths ranging from shallow waters at tide lines to the deep sea. Barnes, 1987 Brusca and Brusca, 2003 University of Alabama Center for Communication and Educational Technology, 2000 Waggoner, 1999 These animals are found in the following types of habitat: temperate tropical polar saltwater or marine Aquatic Biomes: brackish water Other: intertidal or littoral Systematic and Taxonomic History Echinoderm means "spiny skin.". Because of its abundant fossil record, up to 25 classes have been recognized. A traditional hypothesis of the

11. Echinoderms On The Shores Of Singapore They belong to the Phylum echinodermata with about 6,500 known species. Most are bottom dwelling. The Phylum echinodermata is made up of these groups http://www.wildsingapore.com/wildfacts/echinodermata/echinodermata.htm

wildsingapore homepage wildfactsheets homepage wild shores of singapore blog all animals ... search echinoderms text index photo index Phylum Echinodermata Echinoderms Phylum Echinodermata updated Dec 08 if you learn only 3 things about them ... They include sea stars, sea urchins, sea cucumbers and sand dollars. Most have spines and a five-part symmetry. They use water to pump up their bodies. Don't remove them from water for too long. Where seen? Almost everyone is familiar with sea stars. Together with their relatives, these decided 'stars of the shores' are echinoderms. Some kind of echinoderm can usually be found on all our shores. The richest variety of echinoderms appear to be found on our Northern shores such as Changi and Chek jawa. What are echinoderms?

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

Academy Home Teachers Research Go Academy Research Departments Anthropology Aquatic Biology Botany Entomology ... Research Home California Academy of Sciences Research Departments: Anthropology Aquatic Biology Botany Entomology ... Scientific Publications Quick Links: Collections People Opportunities Resources California Academy of Sciences Home

13. Echinodermata: Definition From Answers.com n. pl. ( ē̍ *k ī `n ō̍ *d ẽ r m ȧ *t ȧ ) NL., fr. Gr. 'echi^nos hedgehog, sea urchin + de`rma, atos, skin. (Zo l.) One of the grand divisions of the animal http://www.answers.com/topic/echinodermata

var isReferenceAnswers = true; BodyLoad('s'); On this page Library Animal Life Health History, Politics, Society ... Technology Echinodermata Dictionary: Home Library Webster 1913 n. pl. *k `n *d r"m *t [NL., fr. Gr. 'echi^nos hedgehog, sea urchin + de`rma, -atos, skin.] One of the grand divisions of the animal kingdom. By many writers it was formerly included in the Radiata. [Written also Echinoderma Note: The species usually have an exterior calcareous skeleton, or shell, made of many pieces, and often covered with spines, to which the name. They may be star-shaped, cylindrical, disk-shaped, or more or less spherical. The body consists of several similar parts ( spheromeres ) repeated symmetrically around a central axis, at one end of which the mouth is situated. They generally have suckers for locomotion. The group includes the following classes: Crinoidea, Asterioidea, Ophiuroidea, Echinoidea, and Holothurioidea. See these words in the Vocabulary, and also Ambulacrum Deutsch Italiano Tagalog Search unanswered questions... Browse: Unanswered questions Most-recent questions Reference library Enter a question here...

14. ECHINODERMATA PHYLUM echinodermata Table 25.1 6,000 spp.; all marine; Characteristics endoskeleton of CaCO 3; under epidermis (mesodermal) adults with pentaradial symmetry Fig. 25.3 http://users.tamuk.edu/kfjab02/Biology/BIOLOGY II/Taxa/b1313_ch25.htm

ECHINODERMATA PHYLUM ECHINODERMATA Learn more about echinoderms from the University of California Museum of Paleontology the University of Michigan Museum of Zoology the Tree of Life the California Academy of Sciences the University of Minnesota Farabee's Online Biology Albion College PHYLUM ECHINODERMATA [Table 25.1] 6,000 spp.; all marine Characteristics: endoskeleton of CaCO ; under epidermis (mesodermal) adults with pentaradial symmetry [Fig. 25.3] water vascular system [Fig. 25.4] with tube feet no head or brain etc. Images below courtesy of BIODIDAC Class ASTEROIDEA : sea stars [fig. 25.5-25.7] central disc merges gradually with arms carnivorous sea star dissection from the University of Minneota Class OPHIUROIDEA : brittle stars [Fig. 25.8-25.9] central disc sharply set off from arms feed on suspended microorganisms, detritus S. Hottenrott's The Ophiuroidea page has a wealth of information including links to ophiuroids as all-seeing eyes research reporeted in Nature Class ECHINOIDEA : sand dollars and sea urchins [Fig. 25.10-25.11]

15. Underwater Field Guide To Ross Island & McMurdo Sound, Antarctica Photographs and information on this crinoid found in Antarctic waters. http://www.peterbrueggeman.com/nsf/fguide/echinodermata2.html

Field Guide ECHINODERMATA crinoid Promachocrinus kerguelensis Promachocrinus kerguelensis is found throughout Antarctica and the Antarctic Peninsula, South Shetland Islands, South Georgia Island, Bouvet Island, Kerguelen Island and Heard Island, from 10 to 2,100 meters depth P. kerguelensis is also found between Australia/New Zealand and the Antarctic continent P. kerguelensis has ten biradiate rays (20 arms), is the most widely distributed and abundant crinoid in Antarctica and subantarctic islands, is the largest comatulid (unstalked) crinoid in southern latitudes, and is the only 20-armed comulatid crinoid in high southern latitudes . Here Promachocrinus kerguelensis is seen perched on a large volcano sponge Anoxycalyx (Scolymastra) joubini Promachocrinus kerguelensis can be solid colored or banded; its color ranges from ivory to buff with light to dark brown pinnules and if banded, the bands can be dark to reddish brown . Individuals from the Ross Sea may be more uniform in color; solid color and banded specimens can occur in the same population The arms of Promachocrinus kerguelensis are edged with feathery pinnules containing sensory tube feet and reproductive organs. The arms are used to trap drifting plankton and they have grooves down which food particles are carried by hair-like cilia to the upward-facing mouth. Its different feeding postures (a filtration fan, a radial posture with its pinnules in one plane, and a collecting bowl) are suggested as a response to ocean currents

16. Echinodermata Definition Of Echinodermata In The Free Online Encyclopedia. echinodermata (əkī'nōd r`mətə) Gr.,=spiny skin, phylum of exclusively marine bottomdwelling invertebrates having external skeletons of calcareous plates just beneath the skin http://encyclopedia2.thefreedictionary.com/Echinodermata

17. Natural History Collections: Echinodermata PHYLUM echinodermata. A marine phylum of 6000 species, this is the only group of animals to exhibit radial symmetry as adults. The name echinodermata, i.e. animals with spiny skin http://www.nhc.ed.ac.uk/index.php?page=24.25.312.320

18. Underwater Field Guide To Ross Island & McMurdo Sound, Antarctica Photograph and information on this sea cucumber which is a suspension feeder. http://www.peterbrueggeman.com/nsf/fguide/echinodermata4.html

Field Guide ECHINODERMATA sea cucumber, possibly Echinopsolus acanthocola Echinopsolus acanthocola has been collected in the Weddell Sea and Bouvet Island at depths from 200 to 650 meters . Here it is photographed at scuba diving depth in McMurdo Sound. E. acanthocola has peaked cone-shaped processes on its body wall and its color is rose to brownish-red E. acanthocola has been collected at lengths up to 2.3 centimeters long Echinopsolus acanthocola is a suspension feeder and has a narrow sole which restricts it to using narrow, rod-like structures as subtrate; it has been collected attached to sea urchin spines . Here E. acanthocola is attached to the sea urchin Sterechinus neumayeri and it has been collected attached to the pencil urchin Ctenocidaris perrieri . The species name acanthocola is composed of Colere (meaning "to inhabit") and Acantha (meaning "spine, thorn") to indicate that this sea cucumber species is well adapted to live on sea urchin spines and similar structures Zoologica Scripta 19(1): 101-117,1990; Polar Biology 11(3):145-155, 1991;

19. Echinodermata phylum porifera cnidaria ctenophora platyhelminthes nemertinea sipunculida annelida arthropoda bryozoa brachiopoda mollusca echinodermata chordata http://library.thinkquest.org/26153/marine/enchino.htm

ECHINODERMATA PHYLUM: PORIFERA CNIDARIA CTENOPHORA PLATYHELMINTHES ... MOLLUSCA ECHINODERMATA CHORDATA BACK TO : KINGDOM ANIMALIA (Greek.echin = hedgehog + derma = skin) Echinodermata includes the starfish, sea urchins, brittle stars, sea cucumbers and feather stars. Just like the name says they have spines or spicules on their skins to a varying degree in the different groups. The usually have a radial symmetry with no anterior or posterior, but radiating out from a central point. Radial symmetry is present only in the adult form (larvae bilateral). They reproduce sexually and most of the species release eggs and sperm into the water where the fertilization then occurs. The huge number of gametes produced compensates for the wastefulness of this type of fertilization. The larvae are attractive, planktonic creatures that are transparent and has long slender arms. Characteristics: 1. Symmetry is usually radial in adults, bilateral in larvae. Triploblastic. Most of the organs are ciliated. No segmentation. 2. Body surface of five symmetrical radiating areas, or ambularca, from which the tube feet project.

20. Echinodermata RNA Trafficking and Nuclear Structure Dynamics http://www.scribd.com/doc/16578200/Echinodermata

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 106    1  | 2  | 3  | 4  | 5  | 6  | Next 20