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Narcomedusan
Narcomedusae is an order of hydrozoans in the subclass Trachylinae. Members of this order do not normally have a polyp stage. The medusa In Greek mythology, Medusa (; Ancient Greek: Μέδουσα "guardian, protectress"), also called Gorgo, was one of the three monstrous Gorgons, generally described as winged human females with living venomous snakes in place of hair. Those ... has a dome-shaped bell with thin sides. The tentacles are attached above the lobed margin of the bell with usually a gastric pouch above each. There are no bulbs on the tentacles and no radial canals. Narcomedusans are mostly inhabitants of the open sea and deep waters. They can be found in the Mediterranean in large numbers. Feeding Behavior Narcomedusae use their tentacles to catch large, fast-moving prey. They do this by holding their tentacles perpendicular to the direction they are swimming to cover a larger area. If something is caught they bend the tentacle inwards and coil them at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathykorus Bouilloni
''Bathykorus bouilloni'' is a species of hydrozoan first described in 2010. It is a deep-sea species found in the Arctic Ocean, and appears to be common at depths below .''Bathykorus bouilloni'' Raskoff , 2010 Arctic Ocean Diversity. Retrieved November 7, 2011. It is the only species in the monotypic ''Bathykorus''. The genus name comes from the ''bathy'' meaning "deep" and ''korus'' meaning "helmet", referring to the depth at which this species is found and to the shape of the bell. Its helmet-like appearance bears a resemblance to the helmet of |
Ernst Haeckel
Ernst Heinrich Philipp August Haeckel (; 16 February 1834 – 9 August 1919) was a German zoologist, naturalist, eugenicist, philosopher, physician, professor, marine biologist and artist. He discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms and coined many terms in biology, including ''ecology'', '' phylum'', ''phylogeny'', and ''Protista.'' Haeckel promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny. The published artwork of Haeckel includes over 100 detailed, multi-colour illustrations of animals and sea creatures, collected in his ''Kunstformen der Natur'' ("Art Forms of Nature"), a book which would go on to influence the Art Nouveau artistic mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeginidae
Aeginidae is a family of hydrozoans in the order Narcomedusae. The family comprises 6 genera and 8 species. Taxonomy The following genera are recognized in the family Aeginidae:Aeginidae World Register of Marine Species. Retrieved 2011-11-06. * '''' Eschscholtz, 1829 (2 species) *'' Aeginona'' Lindsay, 2017 (monotypic – '' Aeginona brunnea'') *'' Aeginura'' Haeckel, 1879 (2 species) *'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Csiromedusidae
''Csiromedusa medeopolis'' is a species of hydrozoan described in 2010. It was discovered in the estuarine waters of the River Derwent near to the Commonwealth Scientific and Industrial Research Organisation's Marine and Atmospheric Research branch in Hobart, Tasmania, Australia. ''C. medeopolis'' has been described as presenting a new family and genus as well as species. Its binomial name is derived from "CSIRO jellyfish" and "city of gonads". Unlike most other jellyfish, males and females of ''C. medeopolis'' have many gonads located on their dorsal endoderm Endoderm is the innermost of the three primary germ layers in the very early embryo. The other two layers are the ectoderm (outside layer) and mesoderm (middle layer). Cells migrating inward along the archenteron form the inner layer of the gast .... These gonads have been described as arranged like "skyscrapers in a downtown business district". References Narcomedusae Hydrozoan genera Cnidarians of Australia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuninidae
Cuninidae is a family of hydrozoans in the order Narcomedusae Narcomedusae is an order of hydrozoans in the subclass Trachylinae. Members of this order do not normally have a polyp stage. The medusa has a dome-shaped bell with thin sides. The tentacles are attached above the lobed margin of the bell with .... They have dome-shaped bells and tentacles set above the undulating margin of the bell. Their gastric pouches contain the gonads situated in line with the tentacles, the number of pouches being the same as the number of tentacles. The pouches do not extend below the points of origin of the primary tentacles. Members of some genera have a peripheral canal system and others do not. No radial canals or secondary tentacles are present. The Hydrozoa Directory. Retrieved 2011-11-06. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudaeginidae
''Pseudaegina'' is a genus of cnidarians belonging to the monotypic family Pseudaeginidae. The species of this genus are found in Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean Se .... Species: *'' Pseudaegina pentanema'' *'' Pseudaegina rhodina'' References Narcomedusae Hydrozoan genera {{Hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solmarisidae
Solmarisidae is a family of hydrozoans in the order Narcomedusae. The name is sometimes spelled "Solmaridae". Characteristics Members of this family have dome-shaped bells and numerous tentacles set above the undulating margin of the bell. They do not have gastric pouches as do other members of the order. The gonads are situated inside the wall of the stomach. The Hydrozoa Directory. Retrieved 2011-11-06. Genera and species The World Register of Marine Species lists the following andspecies
In biology, a species ...
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Solmundaeginidae
Solmundaeginidae is a family of hydrozoans in the order Narcomedusae. Taxonomy The following genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ... are recognized in the family Solmundaeginidae: * '' Aeginopsis'' Brandt, 1835 * '' Solmundaegina'' Lindsay, 2017 * '' Solmundella'' Haeckel, 1879 References Narcomedusae Cnidarian families {{Hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraplatidae
''Tetraplatia'' is a genus of hydrozoans in the order Narcomedusae. It is the sole genus in the monotypic family Tetraplatidae. Taxonomy and systematics Since their discovery in the 1850s, there has been disagreement over the phylogeny of the tetraplatids. Some authorities considered that they were aberrant hydrozoans while others thought that they were unusual scyphozoans, cubozoans or staurozoans. Examination of the ribosomal DNA has shown that they are hydrozoans in the order Narcomedusae. The genus seems to be of recent origin. Genera and species The World Register of Marine Species lists the following taxa in the family Tetraplatidae: *Genus ''Tetraplatia'' Busch, 1851 **''Tetraplatia chuni'' Carlgren, 1909 **''Tetraplatia volitans'' Busch, 1851 Characteristics Unlike the other members of the order, members of the family Tetraplatidae have no tentacles nor bell but are worm-like in shape. The body is divided by a transverse groove beside which there are four muscular flaps ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), 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. Fo ... [...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] |
Trachylinae
Trachylinae (also Trachylina, Trachylinida, etc.) is a subclass of hydrozoans. It is placed at order rank in many older classifications, and limited to contain the Narcomedusae, Trachymedusae, the Actinulidae, then considered an independent order, and also the Limnomedusae which were traditionally placed in the paraphyletic "Hydroida". It is not entirely clear whether the Limnomedusae and the Trachymedusae as conventionally circumscribed are monophyletic The freshwater jelly ''Craspedacusta sowerbyi'' is a well-known member of the Limnomedusae and might thus belong here. Development Of the four orders: Narcomedusae, Trachymedusae, Actinulidae, and Limnomedusae, only Limnomedusae has any sort of polyp stage, and even then it is very tiny(less than 1mm) with no tentacles. This is uncommon for other jellyfish under the phylum cnidaria. These jellyfish also tend to have fewer cells during their embryonic and larvae A larva (; plural larvae ) is a distinct juvenile form many ani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
