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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Encephalartoideae
Taxonomy
Encephalartoideae was named by Stevenson. It is extant. It is considered to be a form taxon.
It was assigned to Zamiaceae by Stevenson (1992), Martínez et al. (2012), Martínez et al. (2018).
It was assigned to Zamiaceae by Stevenson (1992), Martínez et al. (2012), Martínez et al. (2018).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1992 | Encephalartoideae Stevenson |
| 2012 | Encephalartoideae Martínez et al. p. 438 |
| 2018 | Encephalartoideae Martínez et al. p. 3 |
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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.
Subfm. Encephalartoideae Stevenson
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Tr. Encephalarteae Miquel 1861
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G. †Austrozamia Wilf et al. 2016
G. †Chamberlainia Artabe et al. 2005
G. †Wintucycas Martínez et al. 2012
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†Wintucycas beatrizae Martínez et al. 2018
†Wintucycas stevensonii Martínez et al. 2012
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range
Maximum range based only on fossils: base of the Maastrichtian to the top of the Ypresian or 72.20000 to 48.07000 Ma
Minimum age of oldest fossil (stem group age): 66.0 Ma
Minimum age of oldest fossil (stem group age): 66.0 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian | Argentina (Río Negro) | Wintucycas stevensonii (28459) | |
| Danian | Argentina (Neuquén) | Wintucycas beatrizae (241392) | |
| Ypresian | Argentina (Chubut) | Cycad TY016 (133045 133054 133057) |