Hydrozoa 
AphiaID: 1337

Classification: Biota > Animalia > Cnidaria

Authority		Owen, 1843
Status		accepted
Record status		Checked by Taxonomic Editor
Rank		Class
Parent		Cnidaria
Sources		original description: Owen, R., 1843. Lectures on the comparative anatomy and physiology of the invertebrate animals. [details] basis of record: Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. Thalassia Salent. 24: 47-296 (look up in IMIS) [details] additional source: Cartwright, P., & Collins, A. G. 2007. Class Hydrozoa. in: Daly, M., Brugler, M. R., Cartwright, P., Collins, A. G., Dawson, M. N., France, S. C., McFadden, C. S., Opresko, D. M., Rodriguez, E., Romano, S., & Stake, J. 2007. The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus. Zootaxa 1668: 127-182., available online at http://www.mapress.com/zootaxa/2007f/z01668p182f.pdf page(s): 153 [details]
Vernacular Names		Language    Name   Dutch hydroïden  [details] Dutch hydroïdpoliepen  [details] English hydroids  [details] English hydromedusae  [details] English hydrozoans  [details] French hydraïres  [details] French hydroméduses  [details] German Hydromedusen  [details] German Hydropolypen  [details]
Direct child taxa		Subclass Hydroidolina Subclass Trachylinae Subclass Automedusae accepted as Trachylinae Order Hydroida accepted as Hydroidolina Infraclass Hydroidomedusae accepted as Hydroidolina Subclass Leptolida accepted as Hydroidolina Order Leptolinae accepted as Hydroidolina
Environment		marine, brackish, fresh, terrestrial
Fossil range		recent + fossil
Feedingtypes		omnivore [details] predator [details] scavenger [details]
Links		Hydrozoa Directory To AnimalsAndEarth (David Shale) To GenBank To ITIS
Note		Diagnosis: Cnidaria with mostly epidermal gonads. Original life cycle includes a polyp and a medusa stage. The medusa stage develops the gonads. Polyps always without internal septae and pharynx, mostly radially symmetric. Medusae produced by budding from polyp stage, if such a stage is present. Medusa nearly always with a velum, without rhopalia. The original life cycle has been modified extensively: the medusa stage is often reduced to a mere appendage of the polyp stage, rarely completely reduced. In some orders the polyp stage is strongly or completely reduced. Polyp stages form often colonies of macroscopic size. Integrated colonies including polypoid and medusoid structures can also form complex colonies, giving them it the appearance of an individual organism. [details]
Images		To AnimalsAndEarth (David Shale)
LSID		urn:lsid:marinespecies.org:taxname:1337
Taxonomic Edit history		Date    action    by 2004-12-21 15:54:05Z   created   db_admin 2009-04-28 06:22:10Z   changed   Schuchert, Peter
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		Citation: Schuchert, P. (2013). Hydrozoa. Accessed through: Schuchert, P. (2013) World Hydrozoa database at http://www.marinespecies.org/hydrozoa.../aphia.php?p=taxdetails&id=1337 on 2013-05-25