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echinodermata    
n. 棘皮动物

棘皮动物

Echinodermata
n 1: radially symmetrical marine invertebrates including e.g.
starfish and sea urchins and sea cucumbers [synonym:
{Echinodermata}, {phylum Echinodermata}]

Echinodermata \E*chi`no*der"ma*ta\
([-e]*k[imac]`n[-o]*d[~e]r"m[.a]*t[.a]), n. pl. [NL., fr. Gr.
'echi^nos hedgehog, sea urchin de`rma, -atos, skin.]
(Zo["o]l.)
One of the grand divisions of the animal kingdom. By many
writers it was formerly included in the Radiata. [Written
also {Echinoderma}.]
[1913 Webster]

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}.
[1913 Webster]


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  • Echinoderm - Wikipedia
    An echinoderm ( ɪˈkaɪnəˌdɜːrm, ˈɛkə - ) [2] is any animal of the phylum Echinodermata ( ɪˌkaɪnoʊˈdɜːrmətə ), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies" [3]
  • Definition, Characteristics, Species, Facts - Britannica
    Echinoderm, any of a variety of invertebrate marine animals belonging to the phylum Echinodermata, characterized by a hard, spiny covering or skin Living species include sea lilies, sea urchins, sea cucumbers, starfishes, basket stars, and sea daisies
  • Sea Stars, Urchins, and Relatives - Smithsonian Ocean
    Together, these animals make up the Echinodermata, a word with Greek origins meaning “hedgehog skin ” Echinoderms live in every ocean, even off the coast of Antarctica Well known as coastal dwellers, they can be found at depths over three miles deep (5,000 meters)
  • Echinoderms - Definition, Examples, Characteristics, and Habitat
    Echinoderms are spiny-skinned invertebrates of the phylum Echinodermata, specifically recognized by the pentamerous body (five-pointed) symmetry in adults The phylum derives its name from the Greek words ‘ekhînos,’ meaning ‘ hedgehog,’ and ‘dérma,’ meaning skin
  • Phylum Echinodermata- Characteristics, classification, examples
    They are exclusively marine and are among the most common and widely distributed marine animals They occur in all seas from the intertidal zones to great depths They have an organ grade system of body organization Symmetry usually radial, nearly always pentamerous
  • Phylum Echinodermata | manoa. hawaii. edu ExploringOurFluidEarth
    Echinoderms are named for the spines or bumps covering the outer surface of the bodies of many of them (Greek root word echino - meaning spiny; Latin root word - derm meaning skin) Examples of echinoderms include sea stars, sea urchins, sea cucumbers, brittle stars, and feather stars (Fig 3 83)
  • 28. 7 Phylum Echinodermata – General Biology
    Echinodermata are named after their “ prickly skin ” (from the Greek “echinos” meaning “prickly” and “dermos” meaning “skin”) This phylum is a collection of about 7,000 described living species of exclusively marine, bottom-dwelling organisms
  • Echinodermata (sea stars, sea urchins, sea cucumbers, and relatives . . .
    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 Mainly a marine group, echinoderms are found in all the oceans
  • Echinodermata - Digital Atlas of Ancient Life
    The phylum Echinodermata represents the largest animal phylum of exclusively marine animals and include animals as morphologically diverse as sea stars (Asteroidea), brittle stars (Ophiuroidea), sea cucumbers (Holothuroidea), sea urchins and sand dollars (Echinoidea), and sea lilies (Crinoidea)
  • Echinoderms and Chordates – Introductory Biology
    Echinodermata are named for their spiny skin (from the Greek “echinos” meaning “spiny” and “dermos” meaning “skin”) The phylum includes about 7,000 1 described living species, such as sea stars, sea cucumbers, sea urchins, sand dollars, and brittle stars Echinodermata are exclusively marine





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