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Staurocladia Oahuensis
''Staurocladia'' is a genus of anthomedusan hydrozoans. Its former family Eleutheriidae is now included in the Cladonematidae. Species include: *''Staurocladia acuminata'' *''Staurocladia alternata'' *''Staurocladia bilateralis'' *''Staurocladia charcoti'' *''Staurocladia haswelli'' *'' Staurocladia oahuensis'' *'' Staurocladia portmanni'' *'' Staurocladia schizogena'' *'' Staurocladia ulvae'' *'' Staurocladia vallentini'' *''Staurocladia wellingtoni ''Staurocladia'' is a genus of anthomedusan hydrozoans. Its former family Eleutheriidae is now included in the Cladonematidae. Species include: *''Staurocladia acuminata ''Staurocladia'' is a genus of anthomedusan hydrozoans. Its former fam ...'' References Cladonematidae Hydrozoan genera {{anthoathecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staurocladia Wellingtoni
''Staurocladia'' is a genus of anthomedusan hydrozoans. Its former family Eleutheriidae is now included in the Cladonematidae. Species include: *''Staurocladia acuminata ''Staurocladia'' is a genus of anthomedusan hydrozoans. Its former family Eleutheriidae is now included in the Cladonematidae. Species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as wel ...'' *'' Staurocladia alternata'' *'' Staurocladia bilateralis'' *'' Staurocladia charcoti'' *'' Staurocladia haswelli'' *'' Staurocladia oahuensis'' *'' Staurocladia portmanni'' *'' Staurocladia schizogena'' *'' Staurocladia ulvae'' *'' Staurocladia vallentini'' *'' Staurocladia wellingtoni'' References Cladonematidae Hydrozoan genera {{anthoathecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthomedusae
Anthoathecata, or the athecate hydroids, are an order of hydrozoans belonging to the phylum Cnidaria. A profusion of alternate scientific names exists for this long-known, heavily discussed, and spectacular group. It has also been called Gymnoblastea and (with or without an emended ending ''-ae''), Anthomedusa, Athecata, Hydromedusa, and Stylasterina. There are about 1,200 species worldwide.Schuchert, P. (2014). Anthoathecata. Accessed through: Schuchert, P. (2014) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=13551 on 2014-10-31 These hydrozoans always have a polyp stage. Their hydranths grow either solitary or in colonies. There is no firm perisarc around the polyp body. The medusae, or jellyfish, are solitary animals, with tentacles arising from the bell margin, lacking statocysts but possessing radial canals. Their gonads are on the manubrium ("handle").Bouillon, J.; Gravili, C.; Pagès, F.; Gili, J.-M.; Boero, F. (2006). An intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoa
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 polyp (zoology), polypoid and a medusa (biology), 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 tetraphylla, Lir ... [...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 opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladonematidae
Cladonematidae is a small family of anthomedusan hydrozoans. They have stolonal hydroid colonies, and their medusae are benthic and can crawl across the sediment; in many species they have lost the ability to swim however.Schuchert 009/ref> Several members of this lineage were formerly considered a separate family Eleutheriidae.WoRMS Description The hydranths have a circular mouth surrounded by a single whorl of adhesive tentacles which each bear a little knob at the tip; in some Cladonematidae an aboral whorl of thread-like unknobbed tentacles is also present. They have a preoral chamber formed by epidermal gland cells. The medusae bud off at the base of the hydrants, though where aboral tentacle are present these are located between the stolons and the budding sites. Cladonematidae medusae have a various extend of nematocysts around their umbrellar margin, varying between a continuous dense ring to none at all among the species. The number of radial canals and whether they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
