Fossil floral structures of a basal angiosperm with monocolpate, reticulate-acolumellate pollen from the Early Cretaceous of Portugal

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Integrating Early Cretaceous fossils into the phylogeny of living angiosperms: Magnoliidae and eudicots (2010, background): “Aptian and Albian pollen of the coarsely reticulate Pennipollis type and associated stamens and carpels, which Friis et al. (2000) compared with Alismatales, were inferred to represent an extinct outgroup of Chloranthaceae, or of Chloranthaceae and Ceratophyllum if these two taxa are sister groups.”
Integrating Early Cretaceous Fossils into the Phylogeny of Living Angiosperms: ANITA Lines and Relatives of Chloranthaceae (2014, background): “Friis et al. (1994) did not observe floral subtending bracts below the male flowers, but because there is no evidence on whether such bracts occurred in the female inflorescences (as they do in Hedyosmum), we score this character (46) as either present in female and absent in male flowers or absent…”
Timing of early angiosperm radiation: recalibrating the classical succession (2006, background): “During recent decades a wealth of new finds of superbly preserved angiosperm mesofossils has radically changed our view of their early evolution (Crane et al. 1995; Friis et al. 1997, 2000a, 2001).”