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Cyathidium

Crinoidea - Cyrtocrinida - Holopodidae

Taxonomy
Cyathidium was named by Steenstrup (1846) [Sepkoski's age data: J Tith R]. It is extant. Its type is Cyathidium holopus.

It was assigned to Cyrtocrinida by Sepkoski (2002); and to Holopodidae by Rasmussen (1961), Žítt (1996) and Hess and Messing (2011).

Species
C. depressum, C. gastaldii, C. holopus (type species), C. senessei

Synonyms
Synonymy list
YearName and author
1846Cyathidium Steenstrup
1851Micropocrinus Michelin
1934Pseudocupressocrinus Valette
1961Cyathidium Rasmussen p. 238
1996Cyathidium Žítt p. 234
2002Cyathidium Sepkoski
2011Cyathidium Hess and Messing p. 201

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumBlastozoa
classCrinoideaMiller 1821
subclassPentacrinoideaJaekel 1918
RankNameAuthor
infraclassInadunata(Wachsmuth and Springer 1897)
—Cladida(Moore and Laudon 1943)
—Eucladida
infraorderArticulata(Miller 1821)
orderCyrtocrinidaSieverts-Doreck 1953
suborderHolopodinaArendt 1974
familyHolopodidaeZittel 1879
genusCyathidiumSteenstrup 1846

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. Cyathidium Steenstrup 1846
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†Cyathidium depressum Sieverts 1932
†Cyathidium gastaldii Michelin 1851
†Cyathidium holopus Steenstrup 1847
†Cyathidium senessei Valette 1934
Invalid names: Micropocrinus Michelin 1851 [synonym], Pseudocupressocrinus Valette 1934 [synonym]
Diagnosis
No diagnoses are available