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Tanabeceras nakagawaense
Taxonomy
Tanabeceras nakagawaense was named by Shigeta et al. (2023). Its type specimen is NMNS PM 45384, a shell, and it is a mold. Its type locality is First tributary, right bank of Shibunnai-touge-no-sawa River, which is in a Cenomanian marine mudstone in the Sakugawa Formation of Japan.
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Tanabeceras nakagawaense Shigeta et al. p. 283 figs. 2-7 |
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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.
†Tanabeceras nakagawaense Shigeta et al. 2023
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 41 | 8.55 | 5.84 | 18.6 | 7.85 | 2.63 | |
| shell diameter | 41 | 18.9 | 13.4 | 39.8 | 17.9 | 5.40 | |
| shell inflation | 41 | 4.81 | 3.60 | 8.76 | 4.57 | 1.05 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Middle Cenomanian or 100.50000 to 93.90000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Cenomanian | Japan | Tanabeceras nakagawaense (type locality: 232844 232846 232848 232849) |