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Echinodermata (phylum) (Animalia (kingdom), Eukaryota (domain), ... Living Organisms (hierarchy name)) |
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Note: Phylum having members that are characterized by a hard, spiny covering or skin. Echinoderms have existed since the Lower Cambrian Period, and today comprise about extant 7,000 species that fall into five well-defined groups: Crinoidea (sea lilies and feather stars), Ophiuroidea (basket stars and brittle stars), Asteroidea (starfishes), Echinoidea (sea urchins, sand dollars, and sea biscuits), and Holothuroidea (sea cucumbers). In the 19th century, Echinodermata was recognized as a distinct group of animals that was occasionally associated with the cnidarians and selected other phyla in a division of the animal kingdom known as the Radiata, however the concept of the superphylum Radiata is no longer valid. Marine invertebrate animals of radially symmetrical structure, having a body wall stiffened by calcareous pieces that may protrude as spines, and tiny hydraulically-operated tube-feet.
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| Terms: |
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| Echinodermata (phylum) (preferred,C,U,LC,S,English-P,D,U,N)
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| Echinodermata (phylum) (Latin-P,D,U,N)
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| echinoderms (C,U,C,English,AD,U,N)
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| echinoderm (C,U,English,AD,U,N)
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| Echinoderma (C,U,English,UF,U,N)
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| 棘皮動物門 (門) (C,U,Chinese (traditional)-P,D,U,U)
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| jí pí dòng wù mén (C,U,Chinese (transliterated Hanyu Pinyin)-P,UF,U,U)
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| ji pi dong wu men (C,U,Chinese (transliterated Pinyin without tones)-P,UF,U,U)
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| chi p'i tung wu men (C,U,Chinese (transliterated Wade-Giles)-P,UF,U,U)
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Facet/Hierarchy Code: H.HL |
Hierarchical Position:
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Agents Facet |
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.... Living Organisms (hierarchy name) (G) |
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........ living organisms (entities) (G) |
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............ Eukaryota (domain) (G) |
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................ Animalia (kingdom) (G) |
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.................... Echinodermata (phylum) (G) |
Additional Notes: |
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| Chinese (traditional) ..... 外皮堅硬且具棘狀突起體壁的動物門。棘皮動物自下寒武紀時期(Lower Cambrian)便已存在，涵蓋約七千種現存生物種，分屬五個明確的集群：海百合綱(包括海百合與海羽星)、蛇尾綱(包括筐蛇尾與海蛇尾)、海星綱(包括海星)、海膽綱(包括海膽、沙錢、以及海餅乾)、以及海參綱(包括海參)。在十九世紀時，棘皮動物被視為是一種獨特的動物集群，被認為是與刺細胞動物有關聯，亦與輻射對稱動物門一併歸入動物界中的一類。然而，此概念現今已不為人採納。輻射對稱的海生無脊椎動物具堅硬的體壁，其體壁由石灰質骨片組成，突起形成棘。牠們亦具有微小的管足，能藉內部水壓產生吸盤作用。 |
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