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Plectrella
Taxonomy
Plectrella was named by Ludvigsen and Westrop (1989) [Sepkoski's age data: Cm u Sepkoski's reference number: ZR90]. It is not extant.
It was assigned to Ptychopariida by Sepkoski (2002); and to Ptychaspididae by Jell and Adrain (2002).
It was assigned to Ptychopariida by Sepkoski (2002); and to Ptychaspididae by Jell and Adrain (2002).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Plectrella Ludvigsen and Westrop |
| 2002 | Plectrella Jell and Adrain p. 427 |
| 2002 | Plectrella 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. †Plectrella Ludvigsen and Westrop 1989
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997, Hendy et al. 2009 | |||||
Age range: base of the Trempealeauan to the top of the Tremadocian or 490.20000 to 477.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Trempealeauan | Canada (Yukon) | P. yukonensis (55308 55310) | |
| Tremadocian | Canada (Newfoundland and Labrador) | P. yukonensis (81289) |