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Anglonautilus japonicus
Taxonomy
Anglonautilus japonicus was named by Matsumoto and Takahashi (1982). Its type specimen is TTC.390715, a shell, and it is a 3D body fossil. Its type locality is Ik1100, Katsurazawa pit, Ikushumbets river, which is in a Cenomanian marine sandstone in the Mikasa Formation of Japan.
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Anglonautilus japonicus Matsumoto and Takahashi p. 295 figs. 1-3 |
| 1984 | Anglonautilus japonicus Matsumoto et al. p. 289 figs. pl 57, fig 1; pl 58, fig 1; pl 59, figs 1,2; pl 60, figs 1-6; text-fig 1 |
| 2017 | Anglonautilus japonicus Lehmann et al. p. 68 |
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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.
†Anglonautilus japonicus Matsumoto and Takahashi 1982
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 50.0 | 43.0 | 57.0 | 51.0 | 7.02 | |
| shell diameter | 3 | 83.1 | 70.0 | 93.0 | 88.0 | 12.1 | |
| shell inflation | 3 | 3.73 | 3.00 | 5.40 | 3.20 | 1.33 |
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| Source: f = family, o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003, Hendy et al. 2009 | |||||
Age range: Early/Lower Cenomanian or 100.50000 to 93.90000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Cenomanian | Japan | Anglonautilus japonicus (type locality: 166256 166258 166259) |