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Gorbyoceras hammelli
Taxonomy
Orthoceras hammelli was named by Foerste (1910). It is the type species of Hammelloceras.
It was recombined as Spyroceras hammelli by Foerste (1924); it was recombined as Hammelloceras hammelli by Shimizu and Obata (1935); it was recombined as Gorbyoceras hammelli by Flower (1946).
It was recombined as Spyroceras hammelli by Foerste (1924); it was recombined as Hammelloceras hammelli by Shimizu and Obata (1935); it was recombined as Gorbyoceras hammelli by Flower (1946).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1910 | Orthoceras hammelli Foerste p. 74 |
| 1924 | Spyroceras hammelli Foerste p. 222 |
| 1935 | Hammelloceras hammelli Shimizu and Obata p. 6 |
| 1946 | Gorbyoceras hammelli Flower p. 151 |
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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.
†Gorbyoceras hammelli Foerste 1910
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Ashgill to the top of the Richmondian or 449.50000 to 445.50000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Richmondian | Canada (Ontario) | Spyroceras hammelli (173012) | |
| Richmondian | USA (Indiana) | Gorbyoceras hammelli (64165 87944 87959 87967) | |
| Ashgill | USA (Indiana) | Gorbyoceras hammelli (5323 64164) |