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Akadocrinus

Eocrinoidea - Gogiida - Eocrinidae

Taxonomy
Akadocrinus was named by Prokop (1962) [Sepkoski's age data: Cm uMid]. Its type is Akadocrinus jani.

It was assigned to Eocrinoidea by Sprinkle (1973); to Gogiida by Sepkoski (2002); and to Eocrinidae by Nohejlová and Fatka (2016).

Synonymy list
YearName and author
1962Akadocrinus Prokop
1973Akadocrinus Sprinkle
2002Akadocrinus Sepkoski, Jr.
2016Akadocrinus Nohejlová and Fatka p. 2

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumBlastozoaSprinkle 1973
classEocrinoideaJaekel 1918
orderGogiidaBroadhead 1982
familyEocrinidaeJaekel 1918
genusAkadocrinusProkop 1962

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
ReferenceDiagnosis
J. Sprinkle 1973Eocrinoids having an elongate, flat-topped, irregularly multiplated calyx bearing epispires (sutural pores) medially, numerous biserial brachioles branching off the summit in groups, and a long, large-diameter stem having a few irregularly wedge-shaped columnals proximally, a large diameter lumen, and a rounded, irregularly plated, attachment disk at the distal end. Middle Cambrian (Paradoxides gracilis zone), Jince Beds, Czechoslovakia.
M. Nohejlová and O. Fatka 2016Eocrinoids having an elongate, flat-topped, irregularly multiplated calyx bearing epispires (sutural pores) medially, numerous biserial brachioles branching off the summit in groups, and a long, large-diameter stem having a few irregularly wedge-shaped columnals proximally, a large diameter lumen, and a rounded, irregularly plated attachment disk at the distal end.