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Echinoderms (Phylum Echinodermata, from the Greek for spiny skin) are a phylum of marine animals found at all depths. This phylum appeared in the early Cambrian Period and contains about 7,000 living species and 13,000 extinct ones. Five or six classes (six counting Concentricycloidea) are alive today:
- Asteroidea (asteroids, starfish, or sea stars): about 1,500 species that capture prey for their own food.
- Concentricycloidea (sea daisies), notable for their unique water vascular system; two species; recently merged into Asteroidea.
- Crinoidea (crinoids, feather stars or sea lilies): about 600 species that are suspension feeders.
- Echinoidea (echinoids, sea urchins and sand dollars): notable for their movable spines; about 1,000 species.
- Holothuroidea (sea cucumbers): elongated animals resembling slugs; about 1,000 species.
- Ophiuroidea (brittle stars and basket stars), the physically largest of echinoderms; about 1,500 species.
Extinct forms known from fossils include blastoids, edrioasteroids, and several early Cambrian animals such as Helicoplacus, carpoids, Homalozoa, and possibly machaerids.
More on [ Echinoderm ]
Echinodermata :: Zoology
Echinoderms :: Invertebrates
km tu sebenernya blajar ato twitteran si el? RT @eldhabod: berarti s echinodermata itu tinggalny di bwh batu, klo porifera ddlm nanas
blendaw (Blenda Wijoyo) Sun, 27 Dec 2009 13:19:44 -0000
km tu sebenernya blajar ato twitteran si el? RT @eldhabod: berarti s echinodermata itu tinggalny di bwh batu, klo porifera ddlm nanas
berarti s echinodermata itu tinggalny di bwh batu, klo porifera ddlm nanas dan tgl brsama molusca tipe gastropoda. hemm ya ya ya
eldhabod (fausyia eldha) Sun, 27 Dec 2009 13:04:34 -0000
berarti s echinodermata itu tinggalny di bwh batu, klo porifera ddlm nanas dan tgl brsama molusca tipe gastropoda. hemm ya ya ya
semangat bgt el. hahaRT @eldhabod: ECHINODERMATA !!! wahai bintang laut yg lucu-lucu cepat msuk k pikiran saya ya
blendaw (Blenda Wijoyo) Sun, 27 Dec 2009 12:53:35 -0000
semangat bgt el. hahaRT @eldhabod: ECHINODERMATA !!! wahai bintang laut yg lucu-lucu cepat msuk k pikiran saya ya
ECHINODERMATA !!! wahai bintang laut yg lucu-lucu cepat msuk k pikiran saya ya (patric), kmrn s porifera(spongebob) sudah masuk insyaAllah
eldhabod (fausyia eldha) Sun, 27 Dec 2009 12:46:08 -0000
ECHINODERMATA !!! wahai bintang laut yg lucu-lucu cepat msuk k pikiran saya ya (patric), kmrn s porifera(spongebob) sudah masuk insyaAllah
hahahaha bercanda kawan, @mesalundi belajar biologi yok aw, saatnya echinodermata....
eldhabod (fausyia eldha) Sun, 27 Dec 2009 12:24:36 -0000
hahahaha bercanda kawan, @mesalundi belajar biologi yok aw, saatnya echinodermata....
baik nanti akan saya tanyakan padanya apa itu echinodermata RT @ayengekngok: coba tanya @vidyahahaa :D
liaawaw (amalia haruni) Fri, 25 Dec 2009 02:45:31 -0000
baik nanti akan saya tanyakan padanya apa itu echinodermata RT @ayengekngok: coba tanya @vidyahahaa :D
Classification of the Extant Echinodermata - Describes the taxonomic groupings and provides links to images of some taxa.
Echinodermata - Characteristics and phylogeny of the spiny-skinned animals: sea urchins, starfish, and their allies.
Echinoderms - Descriptions of the major species of Echinodermata (starfish, brittle star, sea urchin, feather star, sea cucumber) with illustrations and links to photos.
Meta Description: [ Echinoderms (starfish, brittle star, sea urchin, feather star, sea cucumber) - marine biology (characteristics, ecology and range, behavior), underwater photography, links, books ]
Introduction to the Echinodermata - Overview of the systematics and ecology of starfish, brittle stars, sea cucumbers, sea urchins, and sand dollars.
Phylum Echinodermata - Some characteristics of the phylum that includes starfish, sea cucumbers, sea urchins, crinoids and brittle stars.
Sea and Sky: Echinoderms - A brief description of the phylum followed by a long list of annotated photographs.
Meta Description: [ The echinoderms are a group of animals that includes starfish, urchins, feather stars, and sea cucumbers. They are simple animals, lacking a brain and complex sensing organs. Echinoderms are characterized by their radial symmetry and a central mouth. ]
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