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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
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Cenomanian to the top of the Cenomanian or 99.60000 to 93.90000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | India | Eucalycoceras pentagonum (217150 217151 217154 217158 217160 217161) | |
| Cenomanian | France | Eucalycoceras pentagonum (230800) | |
| Late/Upper Cenomanian | USA (South Dakota) | Eucalycoceras pentagonum (177086) | |
| Late/Upper Cenomanian | USA (New Mexico) | Eucalycoceras pentagonum (177087) | |
| Late/Upper Cenomanian | Algeria | Eucalycoceras pentagonum (227880 227881) | |
| Late/Upper Cenomanian | USA (Colorado) | Eucalycoceras pentagonum (78164 176980) | |
| Late/Upper Cenomanian | USA (Arizona) | Eucalycoceras pentagonum (54164 55436 55815 55816) | |
| Late/Upper Cenomanian | France | Eucalycoceras pentagonum (4064 82844) | |
| Middle Cenomanian - Late/Upper Cenomanian | Brazil | Eucalycoceras pentagonum (140839) |