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Arkacrinus

Crinoidea - Cladida - Arkacrinidae

Taxonomy
Arkacrinus was named by Knapp (1969) [Sepkoski's age data: C Bash-u]. It is not extant.

It was assigned to Arkacrinidae by Moore and Strimple (1973); and to Cladida by Sepkoski (2002).

Synonymy list
YearName and author
1969Arkacrinus Knapp p. 357
1973Arkacrinus Moore and Strimple
2002Arkacrinus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Life
Ambulacraria
phylumEchinodermata
classCrinoideaMiller 1821
RankNameAuthor
subclassPentacrinoideaJaekel 1918
infraclassInadunata(Wachsmuth and Springer 1897)
orderCladida(Moore and Laudon 1943)
orderDendrocrinida
superfamilyErisocrinoidea(Wachsmuth and Springer 1886)
familyArkacrinidaeKnapp 1969
genusArkacrinusKnapp 1969

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.

Diagnosis
No diagnoses are available