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Polytryphocycloides
Taxonomy
Polytryphocycloides was named by Smith and Paul (1982) [Sepkoski's age data: D Fras]. Its type is Polytryphocycloides huronensis. It was considered monophyletic by Smith and Paul (1982).
It was assigned to Cyclocystoididae by Smith and Paul (1982); and to Isorophida by Sepkoski (2002).
It was assigned to Cyclocystoididae by Smith and Paul (1982); and to Isorophida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Polytryphocycloides Smith and Paul |
| 2002 | Polytryphocycloides 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. †Polytryphocycloides Smith and Paul 1982
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†Polytryphocycloides billingsi Wilson 1946
†Polytryphocycloides davisii Salter 1858
†Polytryphocycloides depressus Billings 1858
†Polytryphocycloides grandis Smith and Paul 1982
†Polytryphocycloides huronensis Billings 1865
†Polytryphocycloides lindstroemi Regnell 1945
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Kiessling 2004, Aberhan 1992 | |||||
Age range: base of the Trentonian to the top of the Sheinwoodian or 457.30000 to 430.50000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Trentonian | USA (Missouri) | P. sp. (13157) | |
| Richmondian | Canada (Ontario) | Cyclocystoides huronensis (173169) | |
| Rhuddanian - Aeronian | USA (Iowa) | P. sp. (26691) | |
| Sheinwoodian | Sweden (Gotland) | Cyclocystoides lindstroemi (162435) | |
| Wenlock | USA (Indiana) | P. sp. (26700 26778 26811) | |
| Wenlock | Sweden | Cyclocystoides lindstroemi (162440) |