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Pyrgocystis
Taxonomy
Pyrgocystis was named by Bather (1915). It is not extant. Its type is Pyrgocystis sardesoni. It is the type genus of Pyrgocystidae.
It was assigned to Hemicystitidae by Regnéll (1945) and Regnéll (1966); to Isorophida by Sepkoski (2002); and to Pyrgocystidae by Sumrall and Zamora (2011).
It was assigned to Hemicystitidae by Regnéll (1945) and Regnéll (1966); to Isorophida by Sepkoski (2002); and to Pyrgocystidae by Sumrall and Zamora (2011).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Pyrgocystis Bather |
| 1945 | Pyrgocystis Regnéll |
| 1966 | Pyrgocystis Regnéll |
| 2002 | Pyrgocystis Sepkoski |
| 2011 | Pyrgocystis Sumrall and Zamora p. 435 |
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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. †Pyrgocystis Bather 1915
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†Pyrgocystis cylindrica Aurivillius 1892
†Pyrgocystis procera Aurivillius 1892
†Pyrgocystis sardesoni Bather 1915
†Pyrgocystis sulcata Aurivillius 1892
†Pyrgocystis varia Aurivillius 1892
Diagnosis
No diagnoses are available