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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] While bilaterally symmetrical as larvae, as adults echinoderms are recognisable by their usually five-pointed radial
- Echinoderm | 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 Learn more about echinoderms
- 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 Starfish, sea urchins, brittle stars, sand dollars, and sea cucumbers are common examples of echinoderms
- Sea Stars, Urchins, and Relatives - Smithsonian Ocean
Sea buds (blastoids), a type of echinoderm similar to sea lilies and feather stars, had long stalks that tethered them to the ground, but where sea lilies and feather stars have long feathery arms, sea buds had thread-like bristles at their mouth Their main body is often compared to looking like a walnut
- Echinoderm - Definition, Characteristics Examples - Biology Dictionary
An echinoderm is a member of the phylum Echinodermata which contains a number of marine organisms recognized by their pentamerous radial symmetry, calcareous endoskeleton, and a water vascular system which helps operate their small podia
- Echinoderms ~ MarineBio Conservation Society
Echinoderms are a diverse group of marine animals belonging to the phylum Echinodermata They are characterized by a unique radial symmetry and a spiny or prickly outer skin The name “echinoderm” translates to “spiny skin,” which describes their appearance
- Echinoderms - Definition, Characteristics, Types and Examples
Echinoderms are a group of marine animals that include starfish, sea urchins, sea cucumbers, and others They have a unique radial symmetry in which the body parts are arranged in multiples of five
- Echinoderms | Natural History Museum
Echinoderms are an exclusively marine phylum with four distinctive characteristics: Adult echinoderms are radially symmetrical, usually with a fivefold pattern, however, they are considered to be bilaterally symmetrical animals because they start off as bilateral larvae, such as the bipinnaria larva (sea star larva, left) and pluteus larva (brittle star larva, right) shown in the engravings
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