- OphiuroideaOphiuroidea (brittle stars and basket stars), the largest echinoderms; about 1,500 species.simple.wikipedia.org/wiki/Echinoderm
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See all on WikipediaThe phylum contains about 7,600 living species, making it the second-largest group of deuterostomes after the chordates, as well as the largest marine-only phylum. The first definitive echinoderms appeared near the start of the Cambrian. The echinoderms are important both ecologically and geologically. See more
An echinoderm is any deuterostomal animal of the phylum Echinodermata (/ɪˌkaɪnoʊˈdɜːrmətə/), which includes starfish, brittle stars, sea urchins, sand dollars See more
Echinoderms evolved from animals with bilateral symmetry. Although adult echinoderms possess pentaradial symmetry, their larvae are ciliated, free-swimming … See more
Many echinoderms have great powers of regeneration. Many species routinely autotomize and regenerate arms and viscera. … See more
Echinoderms are globally distributed in almost all depths, latitudes and environments in the ocean. Adults are mainly See more
The name echinoderm is from Ancient Greek ἐχῖνος (ekhînos) 'hedgehog', and δέρμα (dérma) 'skin'. Echinoderms are bilaterians, meaning that their ancestors were mirror … See more
Sexual reproduction
Echinoderms become sexually mature after approximately two to three years, depending on the species and the environmental … See moreLocomotion
Echinoderms primarily use their tube feet to move about, though some sea urchins also use their spines. The tube feet typically have a tip … See moreWikipedia text under CC-BY-SA license WebThis article lists the largest organisms for various types of life and mostly considers extant species, which found on Earth can be determined according to various aspects of an organism's size, such as: mass, …
WebOphiuroidea (brittle stars and basket stars), the largest echinoderms; about 1,500 species. Crinozoa (crinoids: the feather stars or sea lilies): about 600 species that are suspension …
- Kingdom: Animalia
- Superphylum: Deuterostomia
WebApr 5, 2024 · Echinoderm, any of a variety of invertebrate marine animals belonging to the phylum Echinodermata, characterized by a hard, spiny covering or skin. Living species …
WebOssicles are small calcareous elements embedded in the dermis of the body wall of echinoderms. They form part of the endoskeleton and provide rigidity and protection. …
WebSea urchin. Sea urchins or urchins ( / ˈɜːrtʃɪnz /) are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to …
Species and distribution of echinoderms | Britannica
WebAbout 6,500 existing species are grouped in six classes: feather stars and sea lilies (Crinoidea), starfishes (Asteroidea), brittle stars and basket stars (Ophiuroidea), sea urchins (Echinoidea), sea daisies …
Echinoderms ~ MarineBio Conservation Society
WebEchinoderms are a diverse group of marine animals belonging to the phylum Echinodermata. They are characterized by a unique radial symmetry and a spiny or
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