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Staurozoa is a class of Medusozoa, jellyfishes and hydrozoans. It has one extant order, Stauromedusae (stalked jellyfishes), and one extinct order, Conulatae.[2] The extinct order is largely unknown and described as a possibly cnidarian clade of marine life with shell-like structures, the Conulariida. Staurozoans are small animals (1–4 cm or 0.4–1.6 in) that live in marine environments, usually attached to seaweeds, rocks, or gravel.[3] They have a large antitropical distribution, a majority found in boreal or polar, near-shore, and shallow waters. Few staurozoans are found in warmer tropical and subtropical water environments of the Atlantic, Indian, and Pacific Ocean basins, but most are known from the Northern Hemisphere.[3]

Temporal range: Latest Precambrian—Recent[1]
Haliclystus stejnegeri 1.jpg
Scientific classification e
Kingdom: Animalia
Phylum: Cnidaria
Subphylum: Medusozoa
Class: Staurozoa
Marques & Collins, 2004


  1. ^ Liu, A. G.; Matthews, J. J.; Menon, L. R.; McIlroy, D.; Brasier, M. D. (22 October 2014). "Haootia quadriformis n. gen., n. sp., interpreted as a muscular cnidarian impression from the Late Ediacaran period (approx. 560 Ma)". Proceedings of the Royal Society B: Biological Sciences. 281 (1793): 20141202. doi:10.1098/rspb.2014.1202. PMC 4173675. PMID 25165764.
  2. ^ "WoRMS - World Register of Marine Species - Staurozoa". Retrieved 2018-03-21.
  3. ^ a b Collins, A. G. (n.d.). Staurozoa. AccessScience. doi:10.1036/1097-8542.652700