Periphyllidae

Periphyllidae is a family of jellyfish containing four genera and six species.[1] The most well-known member of the family, Periphylla periphylla, is usually considered a deep-sea species, but it forms large blooms in surface waters of Norwegian fjords.[2]

Periphyllidae
Periphylla periphylla, illustration by Ernst Haeckel
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Scyphozoa
Order: Coronatae
Family: Periphyllidae
Haeckel, 1880
Genera
  • Nauphantopsis
  • Pericolpa
  • Periphylla
  • Periphyllopsis

Genera
  • Nauphantopsis
    • Nauphantopsis diomedeae Fewkes, 1885
  • Pericolpa
    • Pericolpa campana (Haeckel, 1880)
    • Pericolpa quadrigata Haeckel, 1880
  • Periphylla
    • Periphylla periphylla (helmet jellyfish) (Péron & Lesueur, 1810)
  • Periphyllopsis
    • Periphyllopsis braueri Vanhöffen, 1902
    • Periphyllopsis galatheae Kramp, 1959
gollark: If they were actually working to improve citizens' lives and whatever, and not just retain power, then accepting more aid and whatnot with a risk of having the government be replaced is probably better than trying to work on nukes.
gollark: ... to deter *what*?
gollark: The best way to, you know, stop people starving and all would probably be to... reconcile with other countries, be less authoritarian, and accept aid.
gollark: They probably could do better.
gollark: I kind of expect Google to end up controlling a drone army or something eventually.

References
  1. Cornelius, P. (2012). Periphyllidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=135233 on 2012-12-17
  2. Jarms, G.; Tiemann, H.; Bamstedt, U. (2002). "Development and biology of Periphylla periphylla (Scyphozoa: Coronatae) in a Norwegian fjord". Marine Biology. 141 (4): 647–657. doi:10.1007/s00227-002-0858-x. ISSN 0025-3162.


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