Staurozoa

Staurozoa is a class of Medusozoa, jellyfishes and hydrozoans. It has one extant order: Stauromedusae (stalked jellyfishes). A fossil group called Conulariida has been proposed as a second order,[2] although this is highly speculative. 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] Over the years their number of species has increased, thus right now it is said to have an estimated 50 species.[4]

Staurozoa
Temporal range: Latest Precambrian—Recent[1]
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Subphylum: Medusozoa
Class: Staurozoa
Marques & Collins, 2004
Orders
gollark: Yes, Go actually NOT good?
gollark: It's much more predictable than garbage collection.
gollark: Basically, you can't use things multiple times (except simple things like ints).
gollark: L I N E A R T Y P E S
gollark: C types are veeeery weak.

References
  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". marinespecies.org. Retrieved 2018-03-21.
  3. Collins, A. G. (n.d.). Staurozoa. AccessScience. doi:10.1036/1097-8542.652700
  4. Miranda, Lucília S.; Mills, Claudia E.; Hirano, Yayoi M.; Collins, Allen G.; Marques, Antonio C. (2018-12-01). "A review of the global diversity and natural history of stalked jellyfishes (Cnidaria, Staurozoa)". Marine Biodiversity. 48 (4): 1695–1714. doi:10.1007/s12526-017-0721-4. ISSN 1867-1624.


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