PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Cyrtisphaeractenium

Protozoa - Nassellaria - Archocyrtiidae

Taxonomy

Cyrtisphaeractenium was named by Deflandre (1972) [Sepkoski's age data: D Fame C Vise-l]. Its type is Cyrtisphaeractenium mendax.

It was assigned to Spumellaria by Sepkoski (2002); and to Archocyrtiidae by De Wever et al. (2001), Feng et al. (2004).

Species

C. crassum, C. delicatum, C. fluegeli, C. mendax (type species), C. rurae, C. sandbergi, C. shengi, C. spinosum

Species lacking formal opinion data

C. serrensis

Synonymy list

Year	Name and author
1972	Cyrtisphaeractenium Deflandre
2001	Cyrtisphaeractenium De Wever et al. p. 213
2002	Cyrtisphaeractenium Sepkoski
2004	Cyrtisphaeractenium Feng et al. p. 384

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Rank	Name	Author
—	Life
—	Eukaryota	()
class	Protozoa	Goldfuss 1820
subphylum	Sarcodina	Schmarda 1871
class	Reticularea	Lankester 1885

Rank	Name	Author
subclass	Radiolaria	(Müller 1858)
superorder	Polycystina	(Ehrenberg 1838)
order	Nassellaria	Ehrenberg 1875
family	Archocyrtiidae	Kozur and Mostler 1981
genus	Cyrtisphaeractenium	Deflandre 1972

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Cyrtisphaeractenium Deflandre 1972

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†Cyrtisphaeractenium crassum Cheng 1986

†Cyrtisphaeractenium delicatum Cheng 1986

†Cyrtisphaeractenium fluegeli Kiessling and Tragelehn 1994

†Cyrtisphaeractenium mendax Deflandre 1972

†Cyrtisphaeractenium rurae Won 1983

†Cyrtisphaeractenium sandbergi Schwartzapfel and Holdsworth 1996

†Cyrtisphaeractenium shengi Cheng 1986

†Cyrtisphaeractenium spinosum Cheng 1986

Diagnosis

No diagnoses are available