| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ryugasella
Taxonomy
Ryugasella is a genus. It is not extant.
It was assigned to Diplomoceratidae by Matsumoto (1959); and to Ammonoidea by Sepkoski (2002).
It was assigned to Diplomoceratidae by Matsumoto (1959); and to Ammonoidea by Sepkoski (2002).
Species
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.
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 Santonian to the top of the Early/Lower Campanian or 85.80000 to 70.60000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Santonian | Antarctica | R. antarctica (83338) | |
| Late/Upper Santonian | Canada (British Columbia) | R. sp. (210544) | |
| Early/Lower Campanian | Antarctica | R. antarctica (83377) R. sp. (83383 83384) | |
| Early/Lower Campanian | USA (California) | R. ryugasensis (225634) |