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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Calycoceras (Calycoceras) boreale
Taxonomy
Calycoceras (Calycoceras) boreale was named by Kennedy et al. (1996). Its type specimen is AMNH 44332, a shell, and it is a 3D body fossil. Its type locality is AMNH 3155, Belle Fourche Reservoir, Butte, which is in a Cenomanian marine shale/limestone in the Greenhorn Limestone Formation of South Dakota.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1996 | Calycoceras (Calycoceras) boreale Kennedy et al. p. 3 figs. 5-9 |
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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.
†Calycoceras (Calycoceras) boreale Kennedy et al. 1996
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 16.4 | 9.40 | 28.4 | 16.4 | 9.61 | |
| shell diameter | 3 | 37.4 | 21.0 | 64.3 | 38.6 | 21.8 | |
| shell inflation | 3 | 10.8 | 5.90 | 18.7 | 11.4 | 6.42 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Late/Upper Cenomanian or 100.50000 to 93.90000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Cenomanian | USA (South Dakota) | Calycoceras boreale (type locality: 77738 77739) |