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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Calycoceras spinosum
Taxonomy
Calycoceras newboldi spinosa was named by Wright and Wright (1951).
It was recombined as Calycoceras spinosum by Matsumoto (1959).
It was recombined as Calycoceras spinosum by Matsumoto (1959).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Calycoceras newboldi spinosa Wright and Wright p. 26 |
| 1959 | Calycoceras spinosum Matsumoto p. 72 |
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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 spinosum Wright and Wright 1951
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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 Early/Lower Cenomanian to the top of the Middle Cenomanian or 100.50000 to 93.90000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | France (Normandie) | Calycoceras spinosum (230777) | |
| Cenomanian | USA (California) | Calycoceras spinosum (224965) | |
| Early/Lower Cenomanian - Middle Cenomanian | France | Calycoceras spinosum (230858) | |
| Late/Upper Cenomanian | United Kingdom (England) | Calycoceras spinosum (82857 82899 82913 82916) | |
| Middle Cenomanian | USA (California) | Calycoceras spinosum (224960) |