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Parayoungia
Taxonomy
Parayoungia was named by Chatterton and Perry (1984) [Sepkoski's age data: S (Ldov-u) - S (Wenl-l)]. Its type is Parayoungia eleyae.
It was assigned to Cheiruridae by Jell and Adrain (2002); and to Phacopida by Sepkoski (2002).
It was assigned to Cheiruridae by Jell and Adrain (2002); and to Phacopida by Sepkoski (2002).
Species
Ichiyamella subglobula, P. brennardi, P. eleyae (type species), P. folinsbeei, P. mclaughlini, P. tuberculata
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1984 | Parayoungia Chatterton and Perry |
| 1986 | Ichiyamella Kobayashi and Hamada p. 456 |
| 2002 | Parayoungia Jell and Adrain p. 422 |
| 2002 | Parayoungia 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. †Parayoungia Chatterton and Perry 1984
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†Parayoungia brennardi Chatterton and Perry 1984
†Parayoungia eleyae Chatterton and Perry 1984
†Parayoungia folinsbeei Chatterton and Perry 1984
†Parayoungia mclaughlini Adrain 1998
†Parayoungia tuberculata Chatterton and Perry 1984
Invalid names: Ichiyamella Kobayashi and Hamada 1986 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009 | |||||
Age range: base of the Telychian to the top of the Whitwellian or 438.50000 to 425.40000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery | Canada (Northwest Territories) | Youngia brennardi (26040 26046) Youngia folinsbeei (26032 26038) | |
| Llandovery - Wenlock | Canada (Northwest Territories) | Youngia brennardi (26034 26041 26047) | |
| Telychian | Canada (Northwest Territories) | Youngia folinsbeei (26033 26044) | |
| Sheinwoodian | Canada (Nunavut) | Youngia sp. 1 (26003) | |
| Whitwellian | Canada (Northwest Territories) | P. eleyae, P. tuberculata (26035 26042 26048) | |
| Ludlow | Japan (Skikoku) | Ichiyamella megacranidia, Ichiyamella subglobula (188692) |