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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections | 
Cyclonephelium compactum
Taxonomy
Cyclonephelium compactum was named by Deflandre and Cookson (1955). It is not extant. It is the type species of Cyclonephelium. 
  Sister species lacking formal opinion data
  
Synonymy list
| Year | Name and author | 
|---|---|
| 1955 | Cyclonephelium compactum Deflandre and Cookson | 
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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.
 †Cyclonephelium compactum Deflandre and Cookson 1955
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: base of the Cenomanian to the top of the Santonian or 100.50000 to 83.60000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number | 
|---|---|---|---|
| Barremian - Santonian | Antarctica | Cyclonephelium compactum (153420) | |
| Albian - Cenomanian | Antarctica | Cyclonephelium compactum (153421) | |
| Cenomanian | Antarctica | Cyclonephelium compactum (153428) | |
| Santonian - Campanian | Antarctica | Cyclonephelium compactum (150509) |