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Ptychophylloceras diphyllum
Taxonomy
Ammonites diphyllus was named by d'Orbigny (1841) [DISTRIBUTION: Valanginian; Europe.]. It is not a trace fossil.
It was recombined as Ptychophylloceras diphyllum by Avram and Gradinaru (1993).
It was recombined as Ptychophylloceras diphyllum by Avram and Gradinaru (1993).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1841 | Ammonites diphyllus d'Orbigny p. 181 figs. pl. 55, figs. 1-3 |
| 1993 | Ptychophylloceras diphyllum Avram and Gradinaru p. 671 |
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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.
†Ptychophylloceras diphyllum d'Orbigny 1841
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 15.0 | |||||
| shell diameter | 1 | 26.6 | |||||
| shell inflation | 1 | 3.00 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Late/Upper Valanginian or 137.05000 to 132.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Valanginian | Romania | Ptychophylloceras diphyllum (69198) |