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Palaeocyclus
Taxonomy
Palaeocyclus was named by Milne-Edwards and Haime (1849) [Sepkoski's age data: S Ldov-u S Wenl-l]. It is not extant.
It was assigned to Tryplasmatidae by Merriam (1973); to Palaeocyclidae by Hill (1981); and to Rugosa by Sepkoski (2002).
It was assigned to Tryplasmatidae by Merriam (1973); to Palaeocyclidae by Hill (1981); and to Rugosa by Sepkoski (2002).
Species
Synonymy list
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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. †Palaeocyclus Milne-Edwards and Haime 1849
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†Palaeocyclus porpita Linnaeus 1767
†Palaeocyclus porpita mcallisteri Merriam 1973
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1973 | Small discoid tryplasmid rugose corals with flat to slightly patellate epithecal base having a small central cone and concentric incremental rings. Thick beaded septa with free, broadly convex peripheral edges; distal margins of major septa gradually sloping toward bottom of deep calicular pit. Minor septa commonly more than one-half the length of major septa. No fossula, tabulae, or dissepiments. Septal pattern distinctly radial. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Telychian to the top of the Lochkovian or 438.50000 to 410.80000 Ma
Collections (21 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery | Canada (Quebec) | P. porpita (12443) P. porppita (12424) | |
| Llandovery | USA (New York) | P. sp. (459 463) | |
| Llandovery - Wenlock | USA (Nevada) | P. eurylophus (24787) | |
| Clinton | Canada (British Columbia) | P. sp. (5145) | |
| Telychian | Canada (Quebec) | P. sp. (12941) | |
| Telychian | Sweden | P. porpita (195400) P. porpitus (173006) P. sp. (77409) | |
| Telychian | Ireland (Mayo) | P. porpita (87225) | |
| Telychian | USA (New York) | P. ratuloides (82607) P. sp. (26853 26865) | |
| Telychian | United Kingdom (England) | P. porpita (49638) | |
| Telychian - Sheinwoodian | Sweden (Gotland) | Porpites porpita (13674) | |
| Telychian - Sheinwoodian | USA (Iowa) | P. sp. (26768 26769) | |
| Wenlock | USA (California) | P. porpita (226645) | |
| Lochkovian | Morocco | Cyclolites kokeni (13935 13936) |