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Hymeniastrum

Protozoa - Spumellaria - Spongodiscidae

Taxonomy
Hymeniastrum was named by Ehrenberg (1847) [Sepkoski's age data: J u R]. It is extant. It was considered unknown by Ehrenberg (1847).

It was assigned to Spongodiscidae by Ehrenberg (1847); and to Spumellaria by Sepkoski (2002).

Species

Synonymy list
YearName and author
1847Hymeniastrum Ehrenberg
2002Hymeniastrum Sepkoski

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RankNameAuthor
Life
Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
RankNameAuthor
subclassRadiolaria(Müller 1858)
orderSpumellariaEhrenberg 1875
familySpongodiscidaeHaeckel 1862
genusHymeniastrum

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. Hymeniastrum Ehrenberg 1847
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Hymeniastrum ancora Rüst 1898
Diagnosis
ReferenceDiagnosis
C. G. Ehrenberg 1847Small, disc-shaped body, median part nucleate, with a sometimes wide or concentrically cellular margin. (Mixed) Median chamber wide and nucleate, margin delicate with concentric rows or irregular spongy. Lobate or radiate. Radii joined at the base by a cellular membrane