| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cosmoceras duncani
Taxonomy
Ammonites duncani was named by Sowerby (1816).
It was recombined as Cosmoceras duncani by Jeannet (1951).
It was recombined as Cosmoceras duncani by Jeannet (1951).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1816 | Ammonites duncani Sowerby |
| 1951 | Cosmoceras duncani Jeannet p. 154 figs. Pl 26, figs 1,2; text-fig 376 |
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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.
†Cosmoceras duncani Sowerby 1816
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 25.1 | 18.0 | 35.0 | 26.5 | 12.0 | |
| shell diameter | 2 | 63.7 | 48.0 | 84.5 | 66.2 | 25.8 | |
| shell inflation | 2 | 19.7 | 15.5 | 25.0 | 20.2 | 6.72 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Callovian to the top of the Early/Lower Oxfordian or 164.70000 to 155.70000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Callovian | Switzerland | Cosmoceras duncani (171572 171588 171589) | |
| Early/Lower Oxfordian | Switzerland | Cosmoceras duncani (171751) |