Turritopsis

Turritopsis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Hydrozoa
Order:	Anthoathecata
Family:	Oceaniidae
Genus:	Turritopsis; McCrady, 1857
Species
	See text
Synonyms
	Clavula Wright, 1859; ; Dendroclava Weismann, 1883;

Turritopsis is a genus of hydrozoans in the family Oceaniidae.

Species

According to the World Register of Marine Species, this genus includes the following species:^[2]

Turritopsis chevalense (Thorneley, 1904) – species inquirenda
Turritopsis dohrnii (Weismann, 1883) also known as the "Benjamin Button jellyfish", or the "immortal jellyfish". It can reverse its life cycle and transform itself back to a polyp.^[3]
Turritopsis fascicularis Fraser, 1943
Turritopsis lata Lendenfeld, 1884
Turritopsis minor (Nutting, 1905)
Turritopsis nutricula McCrady, 1857 (several species, including the "immortal jellyfish", were formerly classified as T. nutricula)^[4]
Turritopsis pacifica Maas, 1909
Turritopsis pleurostoma (Péron & Lesueur, 1809) – species inquirenda
Turritopsis polycirrha (Keferstein, 1862)
Turritopsis rubra Farquhar, 1895

^ "Turritopsis". Integrated Taxonomic Information System. Retrieved 16 June 2011.
^ "Turritopsis". WoRMS. World Register of Marine Species. Retrieved 5 August 2012.
^ Nathaniel Rich (28 November 2012). "Can a Jellyfish Unlock the Secret of Immortality?". The New York Times. Retrieved 28 November 2012. For this reason Turritopsis dohrnii is often referred to as the Benjamin Button jellyfish.
^ M. P. Miglietta; S. Piraino; S. Kubota; P. Schuchert (2007). "Species in the genus Turritopsis (Cnidaria, Hydrozoa): a molecular evaluation". Journal of Zoological Systematics and Evolutionary Research. 45 (1): 11–19. doi:10.1111/j.1439-0469.2006.00379.x.

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