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Kirkidium
Taxonomy
Kirkidium was named by Amsden et al. (1967) [Sepkoski's age data: S (Wenl-l) S (Prid) [25, 27]]. Its type is Pentamerus knightii.
It was assigned to Pentamerinae by Bassett and Cocks (1974) and Jin and Chatterton (1997); to Pentameridae by Williams et al. (2002); and to Pentamerida by Sepkoski (2002).
It was assigned to Pentamerinae by Bassett and Cocks (1974) and Jin and Chatterton (1997); to Pentameridae by Williams et al. (2002); and to Pentamerida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1967 | Kirkidium Amsden et al. pp. 865 - 866 |
| 1974 | Kirkidium Bassett and Cocks |
| 1997 | Kirkidium Jin and Chatterton |
| 2002 | Kirkidium Sepkoski |
| 2002 | Kirkidium Williams et al. p. 976 |
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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. †Kirkidium Amsden et al. 1967
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Subg. †Kirkidium (Bateridium) Su Rong and Li 1983
Subg. †Kirkidium (Pinguaella) Boucot and Johnson 1979
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†Kirkidium (Pinguaella) macallisteri Boucot et al. 1988
†Kirkidium knighti Sowerby 1813
†Kirkidium sculptum Lindström 1880
Diagnosis
No diagnoses are available