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Azolla schopfii
Discussion
Djikstra 1961 described this species based on megaspores and microspores. Sweet and Chandrasekharam 1973 emended the diagnosis to include vegetative material from the Genesee Locality in the Scollard Formation. They also included A. fragilis Jain & Hall (1969) and A. extincta Jain (1971).
Taxonomy
Azolla schopfii was named by Dijkstra (1961). It is considered to be a form taxon. It is a compression fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Azolla schopfii Dijkstra p. 9 |
| 1973 | Azolla schopfii Sweet and Chandrasekharam |
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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.
†Azolla schopfii Dijkstra 1961
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: Puercan or 66.00000 to 63.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Puercan | Canada (Alberta) | Azolla schopfii (34026) | |
| Paleocene | Canada (Alberta) | Azolla schopfii (34887) | |
| Paleocene | Canada (Saskatchewan) | Azolla schopfii (34424 34431) |