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Tristomiocystis
Taxonomy
Tristomiocystis was named by Sumrall et al. (2009). Its type is Tristomiocystis globosus.
It was assigned to Protocrinitidae by Sumrall et al. (2009); and to Glyptosphaeritida by Sheffield and Sumrall (2019).
It was assigned to Protocrinitidae by Sumrall et al. (2009); and to Glyptosphaeritida by Sheffield and Sumrall (2019).
Species
T. globosus (type species), T. globosus
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Tristomiocystis Sumrall et al. p. 743 |
| 2019 | Tristomiacystis Sheffield and Sumrall |
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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. †Tristomiocystis Sumrall et al. 2009
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†Tristomiocystis globosus Sumrall et al. 2009
†Tristomiocystis globosus Sumrall et al. 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. D. Sumrall et al. 2009 | Protocrinitid with large globular theca lacking stem, diplopores lacking from posterior oral plates, oral cover plates fused over peristome. |