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Cymatoceras pacificum
Taxonomy
Cymatoceras pacificum was named by Matsumoto and Muramoto (1983). Its type specimen is MC.TS-3025, a shell, and it is a 3D body fossil. Its type locality is Yamato, Wakkawembets stream, which is in a Campanian marine mudstone in Japan.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Cymatoceras pacificum Matsumoto and Muramoto p. 92 figs. Pl 18, fig 1; pl 19, fig 1; pl 20, figs 1,2; text-fig 3 |
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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 pacificum Matsumoto and Muramoto 1983
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 52.9 | 35.0 | 80.0 | 57.5 | 31.8 | |
| shell diameter | 2 | 90.5 | 63.0 | 130.0 | 96.5 | 47.4 | |
| shell inflation | 2 | 8.63 | 6.20 | 12.0 | 9.10 | 4.10 |
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| Source: f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Early/Lower Campanian to the top of the Campanian or 83.50000 to 72.10000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Campanian | Japan | Cymatoceras pacificum (type locality: 166250) | |
| Early/Lower Campanian | Russian Federation | Cymatoceras pacificum (166253) |