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Taxonomy
Acila (Truncacila) nagaoi was named by Oyama and Mizuno (1958) [Originally named by Mizuno (1956) but without description.]. Its type specimen is GSJ 5019, a shell, and it is a 3D body fossil.
It was recombined as Acila nagaoi by Mizuno (1956).
It was recombined as Acila nagaoi by Mizuno (1956).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Acila nagaoi Mizuno figs. pl. 2, fig. 1 |
| 1958 | Acila (Truncacila) nagaoi Oyama and Mizuno p. 595 figs. pl. 1, figs. 14, 15 |
| 2002 | Acila (Truncacila) nagaoi Matsubara p. 134 |
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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.
†Acila (Truncacila) nagaoi Oyama and Mizuno 1958
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Mikkelsen and Bieler 2008, Aberhan et al. 2004 | |||||
Age range: base of the Late/Upper Eocene to the top of the Rupelian or 37.20000 to 28.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Eocene | Japan | Acila nagaoi (70915 70916 70917) | |
| Rupelian | Japan (Saga) | Acira nagaoi (204551) |