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Kygmaeoceras
Taxonomy
Kygmaeoceras was named by Flower (1954) [Sepkoski's age data: Cm Trep-u Sepkoski's reference number: 290].
It was assigned to Calyptoptomatida by Fisher (1962); and to Orthothecida by Sepkoski (2002).
It was assigned to Calyptoptomatida by Fisher (1962); and to Orthothecida by Sepkoski (2002).
Synonymy list
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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.
G. †Kygmaeoceras Flower 1954
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Hendy et al. 2009, Hendy 2009 | |||||
Age range: base of the Franconian to the top of the Trempealeauan or 497.00000 to 485.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Franconian - Trempealeauan | USA (Nevada) | K. corrugatus (199754) |