New petrified gymnosperms from the Permian of Maranhão (Pedra de Fogo Formation), Brazil: Novaiorquepitys and Yvyrapitys
| Autor: | da Conceição, Domingas Maria, Crisafulli, Alexandra, Iannuzzi, Roberto, Neregato, Rodrigo, Cisneros, Juan Carlos, de Andrade, Luiz Saturnino |
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| Zdroj: | In Review of Palaeobotany and Palynology May 2020 276 |
| Databáze: | ScienceDirect |
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