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Hemibrachiocrinus

Crinoidea - Cyrtocrinida - Hemibrachiocrinidae

Taxonomy
Hemibrachiocrinus was named by Arendt (1968) [Sepkoski's age data: K Vala-l K Barr-l Sepkoski's reference number: 1066]. It is not extant. Its type is Hemibrachiocrinus manesterensis. It is the type genus of Hemibrachiocrinidae.

It was assigned to Cyrtocrinida by Sepkoski (2002); and to Hemibrachiocrinidae by Hess and Messing (2011).

Synonyms
Synonymy list
YearName and author
1968Dibrachiocrinus Arendt
1968Hemibrachiocrinus Arendt
2002Dibrachiocrinus Sepkoski
2002Hemibrachiocrinus Sepkoski
2011Hemibrachiocrinus Hess and Messing p. 204

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumBlastozoa
classCrinoideaMiller 1821
RankNameAuthor
subclassPentacrinoideaJaekel 1918
infraclassInadunata(Wachsmuth and Springer 1897)
Cladida(Moore and Laudon 1943)
Eucladida
infraorderArticulata(Miller 1821)
orderCyrtocrinidaSieverts-Doreck 1953
suborderHolopodinaArendt 1974
familyHemibrachiocrinidaeArendt 1968
genusHemibrachiocrinusArendt 1968

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. †Hemibrachiocrinus Arendt 1968
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Invalid names: Dibrachiocrinus Arendt 1968 [synonym]
Diagnosis
No diagnoses are available