Further evidence supporting high diversity of cyathealean tree ferns in the Early Cretaceous of Antarctica
Two new specimens of a cyathealean fern stems collected from the Lower Cretaceous (Aptian) Cerro Negro Formation, which crops out at the South Shetland Islands, Antarctica, are described in detail. The specimens are dictyostelic stems with U-shaped meristeles without sclerenchyma sheaths and petiole...
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| Autor principal: | Vera, E.I. |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01956671_v56_n_p141_Vera |
| Aporte de: |
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