Paisia, an Early Cretaceous eudicot angiosperm flower with pantoporate pollen from Portugal

Friis EM, Mendes MM & Pedersen KR
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Friis, E. M., Mendes, M. M., & Pedersen, K. R. (2018). Paisia, an Early Cretaceous eudicot angiosperm flower with pantoporate pollen from Portugal. Grana, 57(1-2), 1-15. https://doi.org/10.1080/00173134.2017.1310292