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Mandalacystis
Taxonomy
Mandalacystis was named by Lewis et al. (1987). Its type is Mandalacystis dockeryi.
It was assigned to Rhipidocystidae by Lewis et al. (1987); and to Eocrinoidea by Rozhnov (1994), Sepkoski (2002).
It was assigned to Rhipidocystidae by Lewis et al. (1987); and to Eocrinoidea by Rozhnov (1994), Sepkoski (2002).
Species
M. dockeryi (type species)
Entered
by J. Sepkoski on 2003-01-23; modified by P. Novack-Gottshall on 2025-10-01
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Mandalacystis Lewis et al. p. 1233 |
| 1994 | Mandalocystis Rozhnov p. 175 |
| 2002 | Mandalacystis Sepkoski |
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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
| Reference | Diagnosis | |
|---|---|---|
| R. D. Lewis et al. 1987 | A 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. |
Measurements
No measurements are available
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| Source: g = genus, c = class, p = phylum | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: Dapingian or 471.30000 to 469.40000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Dapingian | USA (Utah) | M. sp. (275393) | |
| Whiterockian | USA (Oklahoma) | M. dockeryi (174595) |