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Shikamaia
Taxonomy
Shikamaia was named by Ozaki (1968) [Sepkoski's age data: P Leon-m P Guad-l]. Its type is Shikamaia akasakaensis.
It was assigned to Alatoconchidae by Carter (1990); to Pterioida by Sepkoski (2002); and to Alatoconchinae by Yancey and Ozaki (1986), Asato et al. (2017) and Chen et al. (2018).
It was assigned to Alatoconchidae by Carter (1990); to Pterioida by Sepkoski (2002); and to Alatoconchinae by Yancey and Ozaki (1986), Asato et al. (2017) and Chen et al. (2018).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Shikamaia Ozaki p. 28 |
| 1975 | Tanchintongia Runnegar and Gobbett p. 315 |
| 1983 | Shikamaia (Tanchintongia) Yancey and Boyd p. 507 |
| 1986 | Shikamaia Yancey and Ozaki p. 121 |
| 1990 | Shikamaia Carter |
| 2002 | Shikamaia Sepkoski |
| 2017 | Shikamaia Asato et al. p. 366 |
| 2018 | Shikamaia Chen et al. p. 150 |
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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. †Shikamaia Ozaki 1968
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Subg. †Shikamaia (Alatoconcha) Termier et al. 1973
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†Shikamaia (Alatoconcha) vampyra Termier et al. 1973
Subg. †Shikamaia (Shikamaia) Ozaki 1968
†Shikamaia akasakaensis Ozaki 1968
†Shikamaia ozakii Asato and Kase 2017
†Shikamaia perakensis Runnegar and Gobbett 1975
Invalid names: Tanchintongia Runnegar and Gobbett 1975 [synonym]
Diagnosis
No diagnoses are available