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[ĭ-kī́nə-dûrḿ]
(n.)Any of numerous radially symmetrical marine invertebrates of the phylum Echinodermata, which includes the starfishes, sea urchins, and sea cucumbers, having an internal calcareous skeleton and often covered with spines.
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Echinoderm - Wikipedia, the free encyclopedia
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Echinoderm , there are seven main classes of Echinoderms which are brittle stars, basket stars, sea urchins, sand dollars, sea lilies, feather stars, and sea cucumbers. They can be found at every oce...
en.wikipedia.org/wiki/Echinoderm
The following classes are types of echinoderms: ... Echinoderms have a few important aspects in common. They have bony ossicles in their body. They have a water-vascular system which pumps water through the madroporite. They also have small jaws that are supported ... And they have tube feet which they use to attach to objects,
www.cyhaus.com/marine/Echinoderm.htm www.cyhaus.com/marine/Echinoderm.htm · Cached
Overview of the systematics and ecology of starfish, brittle stars, sea cucumbers, sea urchins, and sand dollars. ... Visit the Echinoderm Homepage at the California Academy of Sciences for additional information and links. Or peruse the Echinoderm Newsletter, brought to you by the National Museum of Natural History.
www.ucmp.berkeley.edu/echinodermata/echinodermata.html www.ucmp.berkeley.edu/echinodermata/echinodermata.html · Cached
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.
www.ucmp.berkeley.edu/echinodermata/echinomm.html www.ucmp.berkeley.edu/echinodermata/echinomm.html · Cached
Echinoderm means "spiny skin.". Because of its abundant fossil record, up to 25 classes have been recognized. A traditional hypothesis of the Echinodermata using only extant taxonomic groups places the Asteroidea and Ophiuroidea as sister groups based on the shared derived characteristic of a five-rayed body plan.
animaldiversity.ummz.umich.edu/site/accounts/informatio... animaldiversity.ummz.umich.edu/site/accounts/information/Echinodermata.html · Cached
Echinoderm Printouts: These spiny-skinned invertebrates have five-fold symmetry and live on the ocean floor. ... Echinoderm Printout ... The oldest-known fossil echinoderm is Arkarua, which lived in pre-Cambrian times, during the Vendian period, roughly 560 million years ago, in what is now Australia.
www.enchantedlearning.com/subjects/invertebrates/echino... www.enchantedlearning.com/subjects/invertebrates/echinoderm/ · Cached
Describes the taxonomic groupings and provides links to images of some taxa. ... California Academy of Sciences Research California Academy of SciencesHome | Privacy Policy...
www.calacademy.org/research/izg/echinoderm/classify.htm www.calacademy.org/research/izg/echinoderm/classify.htm · Cached
Echinoderms (starfish, brittle star, sea urchin, feather star, sea cucumber) - marine biology (characteristics, ecology and range, behavior), underwater photography, links, books ... When they settle to the bottom they change to the typical echinoderm features.
www.starfish.ch/reef/echinoderms.html www.starfish.ch/reef/echinoderms.html · Cached
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