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Archaeocyathus (Spirocyathus)
Taxonomy
Spirocyathus was named as a genus.
It was synonymized subjectively with Archaeocyathus by Okulitch (1950); it was reranked as Archaeocyathus (Spirocyathus) by Okulitch (1954).
It was assigned to Spirocyathidae by Raymond (1931); to Archaeocyathus by Okulitch (1954); and to Archaeocyathida by Osadchaya et al. (1979).
It was synonymized subjectively with Archaeocyathus by Okulitch (1950); it was reranked as Archaeocyathus (Spirocyathus) by Okulitch (1954).
It was assigned to Spirocyathidae by Raymond (1931); to Archaeocyathus by Okulitch (1954); and to Archaeocyathida by Osadchaya et al. (1979).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1931 | Spirocyathus Raymond p. 177 |
| 1954 | Archaeocyathus (Spirocyathus) Okulitch p. 295 |
| 1979 | Spirocyathus Osadchaya et al. |
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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.
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†Archaeocyathus (Spirocyathus) yavorskii Vologdin 1931
†Spirocyathus constrictus Raymond 1931
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| References: Kiessling 2004, Bambach et al. 2007 | |||||
Age range: base of the Montezuman to the top of the Dyeran or 520.00000 to 509.70000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Montezuman - Atdabanian | Mexico | Archaeocyathus yavorskii (10681) | |
| Montezuman | USA (California) | Archaeocyathus constrictus (226369) | |
| Montezuman | Mexico | Archaeocyathus yavorskii (10682) | |
| Montezuman - Dyeran | USA (California) | Archaeocyathus yavorskii (217095) | |
| Botomian | Russian Federation (Khakasiya) | Archaeocyathus yavorskii (81325 81460) Spirocyathus condensis (81444 81445) | |
| Botomian | Russian Federation (Tuva) | Archaeocyathus yavorskii (81472) | |
| Toyonian | Russian Federation (Khakasiya) | Archaeocyathus yavorskii (81319 81450) |