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Himerometridae
Himerometridae is a family of echinoderms belonging to the order Comatulida Comatulida is an order of crinoids Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, c .... Genera: * '' Amphimetra'' Clark, 1909 * '' Craspedometra'' Clark, 1909 * '' Heterometra'' Clark, 1909 * '' Himerometra'' Clark, 1907 * '' Homalometra'' Clark, 1918 References Echinoderm families {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Himerometra
''Himerometra'' is a genus of crinoids belonging to the family Himerometridae Himerometridae is a family of echinoderms belonging to the order Comatulida Comatulida is an order of crinoids Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk i .... Species * '' Himerometra bartschi'' AH Clark, 1908 * '' Himerometra martensi'' Hartlaub, 1890 * '' Himerometra persica'' AH Clark, 1907 * '' Himerometra palmata'' ? * '' Himerometra robustipinna'' Carpenter, 1881 * '' Himerometra sol'' AH Clark, 1912 References * David J. Lane and Didier Vandenspiegel. 2003. A Guide to Sea Stars and Other Echinoderms of the World. Singapore Science Centre WoRMS Himerometridae Crinoid genera {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comatulida
Comatulida is an order of crinoids Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are .... Members of this order are known as feather stars and mostly do not have a stalk as adults. The oral surface with the mouth is facing upwards and is surrounded by five, often divided rays with feathery pinnules. Comatulids live on the seabed and on reefs in tropical and temperate waters. Taxonomy Bourgueticrinida, the sea lilies, has traditionally been viewed as an order of Articulata and a sister taxon to Comatulida. A study published in 2011 suggested that it should be renamed Bourgueticrinina and viewed as a suborder of Comatulida. Characteristics Like other echinoderms, comatulids have pentamerous symmetry (five sided) as adults though the larvae have bilateral symmetry. Late in their deve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoderms
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 compl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
