Turritopsis

Turritopsis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Hydrozoa
Order:	Anthoathecata
Family:	Oceaniidae
Genus:	Turritopsis; McCrady, 1857[1]
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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