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Cymatoceras honmai
Taxonomy
Cymatoceras honmai was named by Matsumoto and Miyauchi (1983). Its type specimen is MNH 144, a shell, and it is a 3D body fossil. Its type locality is Location 2, Kiyohama-I, Cape Soya, which is in a Campanian marine sandstone in Japan.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Cymatoceras honmai Matsumoto and Miyauchi p. 225 figs. Pl 48, fig 2; pl 49, figs 1,2 |
| 2003 | Cymatoceras honmai Wilmsen and Yazykova p. 487 fig. 7 |
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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.
†Cymatoceras honmai Matsumoto and Miyauchi 1983
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 31.6 | 30.0 | 33.3 | 31.6 | 2.33 | |
| shell diameter | 2 | 51.2 | 50.5 | 52.0 | 51.2 | 1.06 | |
| shell inflation | 2 | 5.29 | 5.00 | 5.60 | 5.30 | 0.424 |
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| Source: f = family, o = order, c = class | |||||
| References: Kiessling 2003, Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Campanian | Russian Federation | Cymatoceras honmai (172979) | |
| Late/Upper Campanian | Japan | Cymatoceras honmai (type locality: 165935 165936) |