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Trichaster Palmiferus
''Trichaster'' is a genus of echinoderms belonging to the family Euryalidae Euryalidae is a family of echinoderms belonging to the order Euryalida. Genera There are eleven genera: * ''Asteromorpha'' Lütken, 1869 * ''Asteroschema'' Örsted & Lütken, 1856 * ''Asterostegus'' Mortensen, 1933 * ''Astrobrachion'' Doederlein .... Species: * '' Trichaster acanthifer'' Döderlein, 1927 * '' Trichaster flagellifer'' von Martens, 1866 *† '' Trichaster ornatus'' (Rasmussen, 1950) * '' Trichaster palmiferus'' (Lamarck, 1816) References Phrynophiurida Ophiuroidea genera Taxa named by Alexander Agassiz Taxa described in 1836 {{ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoderm
An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larvae, as adults echinoderms are recognisable by their usually five-pointed radial symmetry (pentamerous symmetry), and are found on the sea bed at every ocean depth from the intertidal zone to the abyssal zone. The 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. Echinoderms are important both ecologically and geologically. Ecologically, there are few other groupings so abundant in 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
