Hydrozoa (hydrozoans; from Ancient Greek ὕδωρ (húdōr) 'water' and ζῷον (zôion) 'animal') is a taxonomic class of individually very small, predatory animals...

Schuchert P, ed. (2012). "Turritopsis dorhnii (Weissmann, 1883)". World Hydrozoa database. World Register of Marine Species. Retrieved November 29, 2012...

Cnidaria, and is often considered a subphylum. It includes the classes Hydrozoa, Scyphozoa, Staurozoa and Cubozoa, and possibly the parasitic Polypodiozoa...

Siphonophorae (from Greek siphōn 'tube' + pherein 'to bear') is an order within Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. According...

Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan (widely distributed) free-floating...

individual is actually a colony of hydrozoan polyps. The taxonomic class, Hydrozoa, falls under the phylum Cnidaria, which includes anemones, corals, and...

related more closely to scyphozoan jellyfish than either are to the Hydrozoa. Hydrozoa medusae also have tetra-radial symmetry, nearly always have a velum...

sea pens); swimming Scyphozoa (jellyfish); Cubozoa (box jellies); and Hydrozoa (a diverse group that includes all the freshwater cnidarians as well as...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Anthoathecata Family: Bougainvilliidae Genus: Bougainvillia Lesson...

redescription of the Portuguese man-of-war, Physalia physalis (Cnidaria, Hydrozoa, Siphonophorae, Cystonectae) from Brazil". Iheringia. Série Zoologia. 97...

while the medusa stage is a singular, planktonic organism. Generally in hydrozoa the medusa develops from the asexual budding of the polyp and the polyp...

"Complex neural architecture in the diploblastic larva of Clava multicornis (Hydrozoa, Cnidaria)". The Journal of Comparative Neurology. 519 (10): 1931–1951...

to Aves) Octocorallia Hexacorallia Ceriantharia Cubozoa (box jellyfish) Hydrozoa (hydroids) Myxozoa (marine parasites) Scyphozoa (true jellyfish) Staurozoa...

created by A.K. Totton in 1954 to accommodate these unusual genera of Hydrozoa as their taxonomic affinities were unclear. They had previously been placed...

animal species that have both polyp and medusa stages in their life cycle. Hydrozoa belongs to the phylum Cnidaria, which are aquatic (mainly marine) organisms...

Capitata is a suborder of Hydrozoa, a class of marine invertebrates belonging to the phylum Cnidaria. Members of this suborder are characterised by the...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Anthoathecata Family: Corynidae Genus: Coryne Gaertner, 1774 Species...

Loman-Ramos, Lucio (2014). "Biodiversidad de Medusozoa (Cubozoa, Scyphozoa e Hydrozoa) en México". Revista Mexicana de Biodiversidad. 85, Supp. 1: 154–163. doi:10...

December 1926 – 29 March 2009) was a Belgian marine biologist and expert on Hydrozoa. Jean Bouillon was born in Uccle, Belgium. He worked from 1955 to 1991...

Accessed through: Schuchert, P. (2014) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=13551 on 2014-10-31...

sea anemones and corals, the individual is always a polyp; in the class Hydrozoa, however, the individual may be either a polyp or a medusa, with most species...

Candelabridae is a small family of cnidarians within the class Hydrozoa. Myriothelidae Hincks, 1868 and Symplectaneidae Fraser, 1941 are now accepted as...

Schuchert, P. (2011). Schuchert P (ed.). "Hydra vulgaris Pallas, 1766". World Hydrozoa database. World Register of Marine Species. Retrieved 2011-12-18. Hydra...

Amphisbetia is a genus of hydrozoa in the family Sertulariidae described by L. Agassiz in 1862 based on the type species Amphisbetia operculata (Linnaeus...

worms, clams, mussels, predatory crustaceans, barnacles and small fish. Hydrozoa, also known as hydroids, inhabit SMEs and feed on surrounding algae and...

Although they look like a jellyfish, they actually belong in the class Hydrozoa, while true jellyfish belong in class Scyphozoa. Flower hat jellies occur...

spineless animal. The entire Turritopsis genus is a very small group of Hydrozoa creatures with the Crimson Jellyfish being on the slightly larger side...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Narcomedusae Family: Aeginidae Genus: Aegina Species: A. citrea...

1954 Mapstone, G. (2011). Marrus Totton, 1954. In: Schuchert, P. World Hydrozoa database. Accessed through the World Register of Marine Species on 2011-09-08...

"Transcriptome Characterization of Reverse Development in Turritopsis dohrnii (Hydrozoa, Cnidaria)". G3: Genes, Genomes, Genetics. 9 (12): 4127–4138. doi:10.1534/g3...