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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Placenticeras cumminsi
Taxonomy
Ammonites syrtalis cumminsi was named by Cragin (1893). It is a 3D body fossil.
It was recombined as Placenticeras cumminsi by Cobban and Hook (1983).
It was recombined as Placenticeras cumminsi by Cobban and Hook (1983).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1893 | Ammonites syrtalis cumminsi Cragin p. 237 |
| 1983 | Placenticeras cumminsi Cobban and Hook p. 8 |
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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.
†Placenticeras cumminsi Cragin 1893
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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 2004, Kiessling 2003 | |||||
Age range: base of the Late/Upper Cenomanian to the top of the Turonian or 99.60000 to 89.80000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | USA (Utah) | Placenticeras cumminsi (5608) | |
| Cenomanian - Turonian | USA (Texas) | Placenticeras cumminsi (234310) | |
| Late/Upper Cenomanian | USA (New Mexico) | Placenticeras cumminsi (230855) | |
| Late/Upper Cenomanian | USA (Arizona) | Placenticeras cumminsi (54164 55813) | |
| Early/Lower Turonian | USA (New Mexico) | Placenticeras cumminsi (87805 87809) | |
| Middle Turonian | USA (New Mexico) | Placenticeras cumminsi (88811 88812) | |
| Middle Turonian | USA (Arizona) | Placenticeras cumminsi (53504 54153) |