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Leptometra
''Leptometra'' is a genus of free-swimming, stemless crinoids. Characteristics Members of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of long cirri or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc. Species The following species are recognised in the World Register of Marine Species: *'' Leptometra celtica'' (McAndrew & Barrett, 1857) *''Leptometra phalangium ''Leptometra'' is a genus of free-swimming, stemless crinoids. Characteristics Members of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of long cirri Giovanni Battis ...'' (Müller, 1841) References Antedonidae {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptometra Celtica
''Leptometra celtica'' is a marine invertebrate and species of crinoid or feather star of the Leptometra genus in the family Antedonidae. It is found in the Atlantic Ocean around the coasts of north west Europe. The presence of ''L. celtica'' and '' L. phalangium'' (its counterpart in the Mediterranean) is considered to be a good indication of nearby shelf breaks, general bottom currents, and areas of high gross productivity as they are suspension-feeders, hence their proliferation in productive environments. Description ''Leptometra celtica'' has ten pinnate arms that are typically 7–10 cm in length with neatly held side branches. The arms may be banded in red and white or plain coloured in brown, white or red. In areas of moderate current, specimens have been observed to spread their arms out into a vertical fan across the current.Encyclopedia of Marine Life of Britain and Ireland. Retrieved 2013-12-03. The cirri of ''L. celtica'' are about 34–40 mm in length and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptometra Phalangium
''Leptometra'' is a genus of free-swimming, stemless crinoids. Characteristics Members of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of long cirri Giovanni Battista Cirri (1 October 1724 – 11 June 1808) was an Italian cellist and composer in the 18th century. Biography Cirri was born in Forlì in the Emilia-Romagna Region of Italy. He had his first musical training with his brother ... or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc. Species The following species are recognised in the World Register of Marine Species: *'' Leptometra celtica'' (McAndrew & Barrett, 1857) *'' Leptometra phalangium'' (Müller, 1841) References Antedonidae {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antedonidae
Antedonidae is a family of crinoids or feather stars in the phylum Echinodermata. Members of the family are unstalked and have ten feathery arms. They can move about freely and have clawed cirri to attach them temporarily to structures. Marine Species Identification Portal. Retrieved 2011-10-11. Genera The following genera are recognised by the World Register of Marine Species: * sub-familia Antedoninae (Norman, 1865) ** genus '' Andrometra'' AH Clark, 1917 -- 2 species ** genus ''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinodermata
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] |
Crinoidea
Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are members of the largest crinoid order, Comatulida. Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. They live in both shallow water and in depths as great as . Adult crinoids are characterised by having the mouth located on the upper surface. This is surrounded by feeding arms, and is linked to a U-shaped gut, with the anus being located on the oral disc near the mouth. Although the basic echinoderm pattern of fivefold symmetry can be recognised, in most crinoids the five arms are subdivided into ten or more. These have feathery pinnules and are spread wide to gather planktonic particles from the water. At some stage in their lives, most crinoids have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articulata (Crinoidea)
Articulata are a subclass or superorder within the class Crinoidea, including the only living crinoid species. They are commonly known as sea lilies (stalked crinoids) or feather stars (unstalked crinoids). The Articulata are differentiated from the extinct subclasses by their lack of an anal plate in the adult stage and the presence of an entoneural system. Articulata first appeared in the fossil record during the Triassic period although other, now extinct crinoid groups, originated in the Ordovician. Characteristics Articulata exhibit pentamerous symmetry. The stalk, which consists of numerous disks held together by ligaments, supports a calyx or cup made of circlets of calcerous plates. In Comatulids, the stalk develops following the larval stage, but the juveniles shed all but the topmost disk to take up a free-living existence. Five often branched arms, which consist of articulated series of ossicles, extend from the oral plate and form the food-capture mechanism of Articula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrus (appendage)
Cirrus may refer to: Science * Cirrus (biology), any of various thin, thread-like structures on the body of an animal * Cirrus (botany), a tendril *Infrared cirrus, in astronomy, filamentary structures seen in infrared light * Cirrus cloud, a type of cloud Aviation * Cirrus aero engines, a series of British aircraft engines manufactured by various companies from the 1920s to the 1950s *Cirrus Aircraft, an aircraft manufacturer in Duluth, Minnesota, USA * Cirrus Airlines, a defunct regional airline in Hallbergmoos, Germany * Cirrus (rocket), a German research rocket first launched in 1961 *Schempp-Hirth Cirrus, an Open-class sailplane * Schempp-Hirth Standard Cirrus, a Standard-class sailplane * Swing Cirrus, a German paraglider design Music * ''Cirrus'' (album), a 1974 release by Bobby Hutcherson * Cirrus (band), an American electronica duo * "Cirrus" (song), a 2013 instrumental by DJ Bonobo * "Cirrus Minor" (song), a 1969 song by Pink Floyd Other uses * Chrysler Cirrus, a car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
