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Echinostrephus
''Echinostrephus'' is a genus of echinoderms belonging to the family Echinometridae. The species of this genus are found in Indian and Pacific Ocean. Species Species: Fossils * ''Echinostrephus saipanicum'' References Echinometridae {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinostrephus Aciculatus
''Echinostrephus'' is a genus of echinoderms belonging to the family Echinometridae The Echinometridae are a family of sea urchins in the class Echinoidea. Characteristics All Echinometridae have imperforate tubercles and compound ambulacral plates. Species Species:Fossils * '' Echinostrephus saipanicum''References Echinometridae {{echinoidea-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinostrephus Saipanicum
''Echinostrephus'' is a genus of echinoderms belonging to the family Echinometridae The Echinometridae are a family of sea urchins in the class Echinoidea. Characteristics All Echinometridae have imperforate tubercles and compound ambulacral plates. Species Species:Fossils * '' Echinostrephus saipanicum''References Echinometridae {{echinoidea-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometridae
The Echinometridae are a family of sea urchins in the class Echinoidea. Characteristics All Echinometridae have imperforate tubercles and compound ambulacral plates. The Natural History Museum. Retrieved 2011-08-27. Genera *'' Anthocidaris'' A. Agassiz, 1863 *'' Caenocentrotus'' H.L. Clark, 1912 *'' Colobocentrotus'' Brandt, 1835 *'' |
Echinostrephus Molaris
''Echinostrephus molaris'' is a species of echinoderms belonging to the family Echinometridae The Echinometridae are a family of sea urchins in the class Echinoidea. Characteristics All Echinometridae have imperforate tubercles and compound ambulacral plates. References Echinometridae {{Improve categories, date=May 2022 ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoderms
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. Geolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Urchin, Liabale West, Wakatobi, 2018 (31942261738)
The sea, connected as the world ocean or simply the ocean, is the body of salty water that covers approximately 71% of the Earth's surface. The word sea is also used to denote second-order sections of the sea, such as the Mediterranean Sea, as well as certain large, entirely landlocked, saltwater lakes, such as the Caspian Sea. The sea moderates Earth's climate and has important roles in the water, carbon, and nitrogen cycles. Humans harnessing and studying the sea have been recorded since ancient times, and evidenced well into prehistory, while its modern scientific study is called oceanography. The most abundant solid dissolved in seawater is sodium chloride. The water also contains salts of magnesium, calcium, potassium, and mercury, amongst many other elements, some in minute concentrations. Salinity varies widely, being lower near the surface and the mouths of large rivers and higher in the depths of the ocean; however, the relative proportions of dissolved salts vary li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
