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Symplectoscyphidae
Symplectoscyphidae is a family of cnidarians in the order Leptothecata Leptothecata, or thecate hydroids, are an order (biology), order of hydrozoans in the phylum Cnidaria. Their closest living relatives are the athecate hydroids, which are similar enough to have always been considered closely related, and the very .... Genera *'' Antarctoscyphus'' Peña Cantero, Garcia Carrascosa & Vervoort, 1997Peña Cantero, Á., Carrascosa, A. & Vervoort, W. (1997). On ''Antarctoscyphus'' (Cnidaria, Hydrozoa), a new genus of antarctic hydroids and the description of two new species. ''Polar Biology'', 18, 23–32. *'' Symplectoscyphus'' Marktanner-Turneretscher, 1890Marktanner-Turneretscher, G. (1890). Die Hydroiden des k. k. naturhistorischen Hofmuseums. ''Annalen des K. K. Naturhistorischen Hofmuseums'', 5, 195–286. References Leptothecata Cnidarian families Symplectoscyphidae {{Leptothecata-stub ...
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Symplectoscyphus
Symplectoscyphus is a genus of cnidarians. It belongs to the Symplectoscyphidae Symplectoscyphidae is a family of cnidarians in the order Leptothecata Leptothecata, or thecate hydroids, are an order (biology), order of hydrozoans in the phylum Cnidaria. Their closest living relatives are the athecate hydroids, which are s ... family. Species * ''Symplectoscyphus adpressus'' * ''Symplectoscyphus aggregatus'' * ''Symplectoscyphus amoenus'' * ''Symplectoscyphus amphoriferus'' * ''Symplectoscyphus anae'' * ''Symplectoscyphus arboriformis'' * ''Symplectoscyphus bathyalis'' * ''Symplectoscyphus bathypacificus'' * ''Symplectoscyphus bellingshauseni'' * ''Symplectoscyphus candelabrum'' * ''Symplectoscyphus chubuticus'' * ''Symplectoscyphus columnarius'' * ''Symplectoscyphus commensalis'' * ''Symplectoscyphus confusus'' * ''Symplectoscyphus cumberlandicus'' * ''Symplectoscyphus curvatus'' * ''Symplectoscyphus densus'' * ''Symplectoscyphus dentiferus'' * ''Symplectoscyphus divarica ...
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Leptothecata
Leptothecata, or thecate hydroids, are an order (biology), order of hydrozoans in the phylum Cnidaria. Their closest living relatives are the athecate hydroids, which are similar enough to have always been considered closely related, and the very apomorphic Siphonophorae, which were placed outside the "Hydroida". Given that there are no firm rules for synonym (biology), synonymy for high-ranked taxa, alternative names like Leptomedusa, Thecaphora or Thecata, with or without the ending emended to "-ae", are also often used for Leptothecata. Leptothecata is surrounded by a chitinous outer layer as its exoskeleton, including gonophores, their reproductive organ. Leptothecata obtain radial symmetry, in which their gonads can be found in their radial canals. Their morphological characters normally have ranged from benthic to planktonic stages. Characters associated with benthic are the polyps and colony forms, while planktonic is medusae. Leptothecata has a vast and complex variation a ...
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Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opi ...
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Cnidaria
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in Fresh water, freshwater and Marine habitats, marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell (biology), cell thick. Cnidarians mostly have two basic body forms: swimming Medusa (biology), medusae and Sessility (motility), sessile polyp (zoology), polyps, both of which are Symmetry (biology)#Radial symmetry, radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single Body orifice, orifice and body cavity that are used for digestion and respiration (physiology), respiration. Many cnidarian species produce Colony (biology), colonies that are single organisms composed of medusa-like or polyp (z ...
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Order (biology)
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. For some groups of organisms, their orders may follo ...
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Cnidarian Families
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians mostly have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming species of Cubozoa and Scy ...
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