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Trigonocidaridae
Trigonocidaridae is a family of echinoderms belonging to the order Camarodonta. Genera Genera: * ''Arbacina'' Pomel, 1869 * ''Asterechinus'' Mortensen, 1942 * ''Brochopleurus'' References Camarodonta Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camarodonta
The Camarodonta are an Order (biology), order of globular sea urchins in the class (biology), class Echinoidea. The fossil record shows that camarodonts have been in existence since the Lower Cretaceous.The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates with the lowest elements enlarged. The pores are at regular intervals along the ambulacral plates from the apex to the mouth opening or peristome. The Aristotle's lantern, or jaw system, has keeled teeth with the supports meeting above the "foramen magnum".Families According to World Register of Marine Species: * Infraorder Echinidea (Kroh & S ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asterechinus
''Asterechinus elegans'' is a species of sea urchin of the family Trigonocidaridae. Their armour is covered with spines. It is the only species in the genus ''Asterechinus'' and lives in the sea. ''Asterechinus elegans'' was first scientifically described in 1942 by Ole Theodor Jensen Mortensen.Kroh, A. (2010). ''Asterechinus elegans'' (Mortensen, 1942). In: Kroh, A. & Mooi, R. (2010World Echinoidea Database at the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien .... References Trigonocidaridae Taxa named by Ole Theodor Jensen Mortensen Echinoidea genera Monotypic echinoderm genera {{echinoidea-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] |
