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Hebellidae
Hebellidae is a family of hydrozoans. Genera The following genera are recognized within the family Hebellidae: * '' Anthohebella'' Boero, Bouillon & Kubota, 1997 * '' Bedotella'' Stechow, 1913 * '' Halisiphonia'' Allman, 1888 * '' Hebella'' Allman, 1888 * ''Scandia Scandza was described as a "great island" by Gothic-Byzantine historian Jordanes in his work ''Getica''. The island was located in the Arctic regions of the sea that surrounded the world. The location is usually identified with Scandinavia. Jor ...'' Fraser, 1912 * '' Staurodiscus'' Haeckel, 1879 References Hebellidae, Leptothecata Cnidarian families {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halisiphonia
''Halisiphonia'' is a genus of hydrozoans, deep water hydrozoans belonging to the family Hebellidae. There is little known about individual species. This lack of information has resulted from the difficulty of studying members of this genus due to the great depths at which they are located. Species: *''Halisiphonia arctica'' *''Halisiphonia megalotheca'' *''Halisiphonia nana'' *''Halisiphonia prolifica'' *''Halisiphonia spongicola'' History ''Halisiphonia'' was first identified in literature in 1888 by George James Allman, after being dredged by the H.M.S. Challenger voyage that took place from 1873 to 1876. The first identified species was ''Halisiphonia'' ''megalotheca''. It was initially characterized by Allman incorrectly as not having a diaphragm, but this was rectified upon further analysis done in 1910. Additionally, the phylogenetic placement of this genus has been often debated, with some authors in the past classifying Hebellidae as a subfamily of the family Laf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebellidae
Hebellidae is a family of hydrozoans. Genera The following genera are recognized within the family Hebellidae: * '' Anthohebella'' Boero, Bouillon & Kubota, 1997 * '' Bedotella'' Stechow, 1913 * '' Halisiphonia'' Allman, 1888 * '' Hebella'' Allman, 1888 * ''Scandia Scandza was described as a "great island" by Gothic-Byzantine historian Jordanes in his work ''Getica''. The island was located in the Arctic regions of the sea that surrounded the world. The location is usually identified with Scandinavia. Jor ...'' Fraser, 1912 * '' Staurodiscus'' Haeckel, 1879 References Hebellidae, Leptothecata Cnidarian families {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scandia (cnidarian)
''Scandia '' is a genus of hydrozoans in the family Hebellidae. Species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ... include: *'' Scandia corrugata'' Fraser, 1938 *'' Scandia gigas'' (Pieper, 1884) *'' Scandia michaelsarsi'' (Leloup, 1935) *'' Scandia minor'' (Fraser, 1938) *'' Scandia mutabilis'' (Ritchie, 1907) *'' Scandia neglecta'' (Stechow, 1913) References Hebellidae Hydrozoan genera {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staurodiscus
''Staurodiscus'' is a genus of hydrozoans belonging to the family Hebellidae Hebellidae is a family of hydrozoans. Genera The following genera are recognized within the family Hebellidae: * '' Anthohebella'' Boero, Bouillon & Kubota, 1997 * '' Bedotella'' Stechow, 1913 * '' Halisiphonia'' Allman, 1888 * '' Hebella'' .... The species of this genus are found in Atlantic, Pacific and Indian Ocean. Species Species: *'' Staurodiscus arcuatus'' *'' Staurodiscus brooksii'' *'' Staurodiscus cirrus'' References Hebellidae Hydrozoan genera {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoan
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polypoid and a medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while '' Liriope'' lacks the polypoid stage. Polyps The hydroid f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
