Sphaeronectidae
Sphaeronectidae is a family of cnidarians belonging to the order Siphonophorae Siphonophorae (from Ancient Greek σίφων (siphōn), meaning "tube" and -φόρος (-phóros), meaning "bearing") is an order within Hydrozoa, a class of marine organisms within the phylum Cnidaria. According to the World Register of Marin .... Genera: * '' Ediacara '' * '' Sphaeronectes'' Huxley, 1859 References Calycophorae Cnidarian families {{Siphonophorae-stub ...
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Calycophorae
Calycophorae is a suborder of Siphonophorae, Siphonophores alongside two other suborders Physonectae and Cystonectae. This suborder includes the giant siphonophore, (''Praya dubia''); one of the longest lengthwise extant creatures (40–50m). While the Physonectae have a pneumatophore (a float), nectophore (or nectosome), and a siphosome, Cystonectae lack a nectophore, and Calycophorae lack a pneumatophore. From the bell-shaped nectophores, Physonectae and Calycophorae are called Codonophores or Greek for bell-bearers. The distribution, Morphology (biology), morphology, and behaviors of Calycophorae species are vast and greatly depend on the species. Calycophoraes typically consist of two nectophores with a siphosome that have many tentacles that grow out of the siphosome. The Calycophoraes move by propelling water out of the nectophore much like how jellyfishes move. The tentacles act as fishing nets where the nematocysts on the tentacles paralyze their prey which are then later ...
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Sphaeronectes
''Sphaeronectes'' is a genus of cnidarians belonging to the family Sphaeronectidae. The genus has almost cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en .... Species: *'' Sphaeronectes bougisi'' *'' Sphaeronectes brevitruncata'' *'' Sphaeronectes christiansonae'' *'' Sphaeronectes fragilis'' *'' Sphaeronectes gamulini'' *'' Sphaeronectes haddocki'' *'' Sphaeronectes irregularis'' *'' Sphaeronectes koellikeri'' *'' Sphaeronectes pagesi'' *'' Sphaeronectes pughi'' *'' Sphaeronectes tasmanica'' *'' Sphaeronectes tiburonae'' References Sphaeronectidae Hydrozoan genera {{Siphonophorae-stub ...
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Siphonophorae
Siphonophorae (from Ancient Greek σίφων (siphōn), meaning "tube" and -φόρος (-phóros), meaning "bearing") is an order within Hydrozoa, a class of marine organisms within the phylum Cnidaria. According to the World Register of Marine Species, the order contains 175 species described thus far. Siphonophores are highly polymorphic and complex organisms. Although they may appear to be individual organisms, each specimen is in fact a colonial organism composed of medusoid and polypoid zooids that are morphologically and functionally specialized. Zooids are multicellular units that develop from a single fertilized egg and combine to create functional colonies able to reproduce, digest, float, maintain body positioning, and use jet propulsion to move. Most colonies are long, thin, transparent floaters living in the pelagic zone. Like other hydrozoans, some siphonophores emit light to attract and attack prey. While many sea animals produce blue and green biolumines ...
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Cnidarians
Cnidaria ( ) is a phylum under kingdom Animalia containing over 11,000 species of aquatic invertebrates found both in fresh water, freshwater and marine environments (predominantly the latter), including jellyfish, hydroid (zoology), hydroids, sea anemones, corals and some of the smallest marine parasites. Their distinguishing features are an uncentralized nervous system distributed throughout a gelatinous body and the presence of cnidocytes or cnidoblasts, specialized cells with ejectable flagella used mainly for envenomation and 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 are also some of the few animals that can reproduce both sexually and asexually. Cnidarians mostly have two basic body forms: swimming medusa (biology), medusae and sessility (motility), sessile polyp (zoology), polyps, both of which are radially symmetrical with mou ...
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Ediacara (cnidarian)
Ediacara may refer to: Places * Ediacara, South Australia, a locality in South Australia * Ediacara Hills, a range of hills in the northern Flinders Ranges , South Australia * Nilpena Ediacara National Park, formerly Ediacara Conservation Park, South Australia Other * ''Ediacaria'', discoidal fossil animal once thought to be a jellyfish * The Ediacaran geological time period, named after the Ediacara Hills * The Ediacaran biota The Ediacaran (; formerly Vendian) biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period (). These were enigmatic tubular and frond-shaped, mostly sessile, organis ...