Subfamily Encephalartoideae Stevenson (cycads)

Cycadopsida - Cycadales - Zamiaceae

Parent taxon: Zamiaceae according to D. Stevenson 1992

Sister taxa: Bororoa, Bowenia, Brunoa, Ceratozamia, Lepidozamia, Macrozamia, Pterostoma, Restrepophyllum, Worsdellia, Zamia

Subtaxa: Encephalarteae

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Distribution:

• Eocene of Argentina (3 collections)

• Cretaceous of Argentina (1)

Total: 4 collections each including a single occurrence

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