|
Rosaster Confinis
''Rosaster'' is a genus of echinoderms belonging to the family Goniasteridae. The species of this genus are found in America, Indian Ocean, Malesia. Species: *''Rosaster alexandri'' *''Rosaster attenuatus'' *''Rosaster bipunctus'' *''Rosaster cassidatus'' *''Rosaster confinis'' *''Rosaster endilius'' *''Rosaster florifer'' *''Rosaster mamillatus'' *''Rosaster mimicus'' *''Rosaster nannus'' *''Rosaster symbolicus'' References {{Taxonbar, from=Q3456339 Goniasteridae Asteroidea genera ... [...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] |
