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Cyclocardia tokunagai
Taxonomy
Venericardia tokunagai was named by Yokoyama (1924) [DISTRIBUTION: Oligocene; Japan.]. It is not a trace fossil.
It was recombined as Cyclocardia tokunagai by Hatai and Nisiyama (1952).
It was recombined as Cyclocardia tokunagai by Hatai and Nisiyama (1952).
Sister species lacking formal opinion data
Cardita subnipponica, C. antiqua, C. belogolovensis, C. erimoensis, C. ezoensis, C. hamiltonensis, C. kickxi, C. kovatschensis, C. longini, C. orientalis, C. ottonis, C. pilvoensis, C. poronaiensis, C. praeruptensis, C. roundiformis, C. subnipponica, C. tokudai, C. wajampolkensis, C. yakatagensis, Venericardia vestitoides
Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Venericardia tokunagai Yokoyama p. 18 figs. pl. 3, figs. 10, 11 |
| 1952 | Cyclocardia tokunagai Hatai and Nisiyama |
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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.
†Cyclocardia tokunagai Yokoyama 1924
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Diagnosis
No diagnoses are available