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Marjumicystis
Taxonomy
Marjumicystis was named by Ubaghs and Robison (1988) [Sepkoski's age data: Cm uMid-m Sepkoski's reference number: 539]. Its type is Marjumicystis mettae.
It was assigned to Eocrinoidea by Ubaghs and Robison (1988) and Sepkoski (2002).
It was assigned to Eocrinoidea by Ubaghs and Robison (1988) and Sepkoski (2002).
Species
M. mettae (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1988 | Marjumicystis Ubaghs and Robison pp. 19 - 22 |
| 2002 | Marjumicystis 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.
G. †Marjumicystis Ubaghs and Robison 1988
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†Marjumicystis mettae Ubaghs and Robison 1988
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Ubaghs and R. A. Robison 1988 | Eocrinoids with irregular multiplated
theca, lacking sutural pores or epispires. Holdfast extremely reduced or possibly without attachment appendage. Ambulacral system confined to oral surface, consisting of an elongate mouth and ambulacra leading to probably five groups of generally two slender, unbranched, biserial brachioles. Anus, hydroporc, and gonopore unknown. |