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Morphology Ecology and taphonomy   Age range and collections

Mandalocystis

- Rhipidocystidae

Taxonomy
Mandalacystis was named by Lewis et al. (1987).

It was corrected as Mandalocystis by Lewis et al. (1987).

It was assigned to Rhipidocystidae by Lewis et al. (1987); and to Eocrinoidea by Sepkoski (2002).

Synonymy list
YearName and author
1987Mandalacystis Lewis et al. p. 1233
1987Mandalocystis Lewis et al. p. 1233
2002Mandalacystis Sepkoski, Jr.

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RankNameAuthor
Life
familyRhipidocystidaeJaekel 1901
RankNameAuthor
genusMandalocystis()

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
R. D. Lewis et al. 1987A large rhipidocystid eocrinoid with relatively short, asymmetrical theca composed of 15 plates with concentric to labyrinthine ridges on thin plates in central area of both faces; brachioles numerous, short, normal biserial; ambulacra four(?), two extend slightly down faces of theca; stem apparently normal, attached, proximally to three thecal plates and attached distally, at least in juvenile stage, to conical holdfast.