Sphaeropteris
- Citations total:
- 2
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Geolocation
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Author - title
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| details | Pliocene | Mexico(Veracruz) | Graham,A. Terrestrial Pliocene climates in northern Latin America | 1999 | |
| details | Early Miocene | Mexico(Chiapas) | Graham,A. Studies in Neotropical paleobotany. XIII: An Oligo-Miocene palynoflora from Simojovel, (Chiapas, Mexico). | 1999 |