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Mesothuriidae
Mesothuriidae is a family of echinoderms belonging to the order Holothuriida Holothuriida is an order of sea cucumbers. Taxa within the order Holothuriida were previously classified in the order Aspidochirotida, which was determined to be polyphyletic in 2017. Some taxa were also reclassified into the clades Synallactida .... Genera There are two genera recognised in the family Mesothuriidae: * '' Mesothuria'' Ludwig, 1894 * '' Zygothuria'' Perrier, 1898 References {{Taxonbar, from=Q17154154 Holothuriida Echinoderm families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holothuriida
Holothuriida is an order of sea cucumbers. Taxa within the order Holothuriida were previously classified in the order Aspidochirotida, which was determined to be polyphyletic in 2017. Some taxa were also reclassified into the clades Synallactida and Persiculida. Description and characteristics Species of the order Holothuriida are distinguished from other sea cucumbers by the presence of flattened, often leaf-like tentacles, but without the other large appendages found in the related order Elasipodida. They do not have introvert or retractor muscles. The tube feet often form a clearly demarcated sole. They have 15-30 shield-shaped retractile tentacles surrounding their mouths. The body wall is thick and leathery and contains ossicles, including some table-shaped ones. They have respiratory trees for gas exchange. The mesentery of the posterior loop of their gut is attached to the right ventral interradius. The muscles that run longitudinally down the body are arranged into five ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoderm
An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies or "stone lilies". Adult echinoderms are found on the sea bed at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates. Echinoderms are the largest entirely marine phylum. The first definitive echinoderms appeared near the start of the Cambrian. The echinoderms are important both ecologically and geologically. Ecologically, there are few other groupings so abundant in the biotic desert of the deep sea, as well as shallower oceans. Most echinoderms are able to reproduce asexually and regenerate tissue, organs, and limbs; in some cases, they can undergo complete regeneration from a single limb. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesothuria
''Mesothuria'' is a genus of sea cucumbers belonging to the family Synallactidae. The genus has a cosmopolitan distribution. Species The following species are recognised in the genus ''Mesothuria'': *'' Mesothuria abberviata'' Koehler & Vaney, 1905 *'' Mesothuria abbreviata'' Koehler & Vaney, 1905 *''Mesothuria bifurcata'' Hérouard, 1901 *'' Mesothuria carnosa'' Fisher, 1907 *'' Mesothuria cathedralis'' Heding, 1940 *''Mesothuria crebrapedes ''Mesothuria'' is a genus of sea cucumbers belonging to the family Synallactidae. The genus has a cosmopolitan distribution. Species The following species are recognised in the genus ''Mesothuria'': *''Mesothuria abberviata'' Koehler & Vaney, 19 ...'' Cherbonnier & Féral, 1981 *'' Mesothuria deani'' Mitsukuri, 1912 *'' Mesothuria edwardensis'' Massin, 1992 *'' Mesothuria gargantua'' Deichmann, 1930 *'' Mesothuria holothurioides'' Sluiter, 1901 *'' Mesothuria incerta'' Koehler & Vaney, 1905 *'' Mesothuria intestinalis'' (Ascanius, 1805) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
