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Eucalycoceras pentagonum
Taxonomy
Ammonites pentagonus was named by Jukes-Browne (1896) [DISTRIBUTION: Cenomanian; Cosmopolitan.]. It is not a trace fossil. It is the type species of Eucalycoceras.
It was recombined as Eucalycoceras pentagonus by Kennedy (1994); it was recombined as Eucalycoceras pentagonum by Cobban (1988), Wright et al. (1996), Kennedy et al. (1996) and Guendouz et al. (2022).
It was recombined as Eucalycoceras pentagonus by Kennedy (1994); it was recombined as Eucalycoceras pentagonum by Cobban (1988), Wright et al. (1996), Kennedy et al. (1996) and Guendouz et al. (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1896 | Ammonites pentagonus Jukes-Browne p. 156 figs. pl. 5, fig. 1 |
| 1988 | Eucalycoceras pentagonum Cobban p. 9 figs. Pl 3; text-figs 6,7 |
| 1994 | Eucalycoceras pentagonus Kennedy p. 229 |
| 1996 | Eucalycoceras pentagonum Kennedy et al. p. 316 figs. Pl 39, figs 6,7; pl 40, figs 1,2,4 |
| 1996 | Eucalycoceras pentagonum Wright et al. p. 164 fig. 123,2a,b. |
| 2022 | Eucalycoceras pentagonum Guendouz et al. p. 2165 fig. 4e |
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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.
†Eucalycoceras pentagonum Jukes-Browne 1896
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Diagnosis
No diagnoses are available