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Gaudryceras (Gaudryceras) cassisianum
Taxonomy
Ammonites cassisianus was named by d'Orbigny (1850) [DISTRIBUTION: Cenomanian; Europe.]. It is not a trace fossil.
It was recombined as Anagaudryceras cassisianum by Cooper (1978); it was recombined as Gaudryceras (Gaudryceras) cassisianum by Kennedy (1994), Kennedy et al. (2024).
It was recombined as Anagaudryceras cassisianum by Cooper (1978); it was recombined as Gaudryceras (Gaudryceras) cassisianum by Kennedy (1994), Kennedy et al. (2024).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1850 | Ammonites cassisianus d'Orbigny p. 146 |
| 1931 | Gaudryceras salinarium Douville p. 42 figs. Pl 1, fig 3; text-fig 5 |
| 1978 | Anagaudryceras cassisianum Cooper p. 65 figs. 8, 9, 10J, 11B-D |
| 1987 | Gaudryceras cenomanense Thomel p. 3 figs. Pl 1, fig 6 |
| 1994 | Gaudryceras (Gaudryceras) cassisianum Kennedy p. 218 |
| 2024 | Gaudryceras (Gaudryceras) cassisianum Kennedy et al. p. 7 figs. 6A-F |
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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.
†Gaudryceras (Gaudryceras) cassisianum d'Orbigny 1850
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Invalid names: Gaudryceras cenomanense Thomel 1987 [synonym], Gaudryceras salinarium Douville 1931 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 8.00 | |||||
| shell diameter | 1 | 28.0 | |||||
| shell inflation | 1 | 13.0 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Early/Lower Albian to the top of the Late/Upper Cenomanian or 113.20000 to 93.90000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Albian - Middle Albian | France | Gaudryceras cassisianum (13499) | |
| Early/Lower Cenomanian | Greenland | Gaudryceras cassisianum (237442 237446) | |
| Early/Lower Cenomanian | France | Gaudryceras cassisianum (13500) | |
| Late/Upper Cenomanian | Angola | Anagaudryceras cassisianum (175545) |