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Proctocystis
Taxonomy
Proctocystis was named by Regnéll (1945). Its type is Proctocystis monstruosa.
It was assigned to Callocystitidae by Sumrall and Brett (2002); and to Echinoencrinitidae by Regnéll (1945), Beaver et al. (1967), Paul and Rozhnov (2016).
It was assigned to Callocystitidae by Sumrall and Brett (2002); and to Echinoencrinitidae by Regnéll (1945), Beaver et al. (1967), Paul and Rozhnov (2016).
Species
P. monstruosa (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1945 | Proctocystis Regnéll |
| 1967 | Proctocystis Beaver et al. p. S191 |
| 2002 | Proctocystis Sumrall and Brett |
| 2016 | Proctocystis Paul and Rozhnov p. 261 |
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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 | |
|---|---|---|
| C. R. C. Paul and S. V. Rozhnov 2016 | Glyptocystitoid family with reduced oral area, with theca composed of 26 or 25 plates arranged in five circlets according to the formula: 4 basals (B, plural BB), 5 infralaterals (ILL), 5 laterals (LL), 4 or 5 radials (RR), and 7 orals (OO), with disjunct pectinirhombs. |
Measurements
No measurements are available
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| Source: o = order, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||