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Rhipidium
Taxonomy
Rhipidium was named by Schuchert and Cooper (1931) [Sepkoski's age data: S Wenl-l S Ludl-l Sepkoski's reference number: 25,27,538]. It is not extant. Its type is Pentamerus knappi.
It was assigned to Pentamerinae by Bassett and Cocks (1974); to Pentameridae by Williams et al. (2002); and to Pentamerida by Sepkoski (2002).
It was assigned to Pentamerinae by Bassett and Cocks (1974); to Pentameridae by Williams et al. (2002); and to Pentamerida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1931 | Rhipidium Schuchert and Cooper |
| 1974 | Rhipidium Bassett and Cocks |
| 2002 | Rhipidium Sepkoski |
| 2002 | Rhipidium Williams et al. p. 983 |
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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. †Rhipidium Schuchert and Cooper 1931
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Subg. †Rhipidium (Ectorhipidium) Boucot and Johnson 1979
Subg. †Rhipidium (Pararhipidium) Boucot and Johnson 1979
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†Rhipidium (Pararhipidium) filicostatum Boucot et al. 1988
†Rhipidium knappi Hall and Whitfield 1872
†Rhipidium tenuistriatum Lindström 1880
Diagnosis
No diagnoses are available