Text-fig. 12. Scanning electron microscope (SEM) images of isolated "Stamen fragment with Clavatipollenites-type pollen sp. 3"; Catefica locality, Portugal. a) Stamen fragment with pollen in situ; b, c) Pollen grains showing the semitectate-reticulate pollen wall and folds (c) indicating a possible monocolpate aperture; d) Detail of pollen wall showing the semitectate-reticulate tectum and long, scattered columellae supporting the narrow muri with finely verrucate supratectal ornamentation; e) Detail of pollen wall showing tiny, spherical, finely spiny orbicules. Specimen, Catefica 50-S170449 (a–e). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d, e). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Text-fig. 12. Scanning electron microscope (SEM) images of isolated "Stamen fragment with Clavatipollenites-type pollen sp. 3"; Catefica locality, Portugal. a) Stamen fragment with pollen in situ; b, c) Pollen grains showing the semitectate-reticulate pollen wall and folds (c) indicating a possible monocolpate aperture; d) Detail of pollen wall showing the semitectate-reticulate tectum and long, scattered columellae supporting the narrow muri with finely verrucate supratectal ornamentation; e) Detail of pollen wall showing tiny, spherical, finely spiny orbicules. Specimen, Catefica 50-S170449 (a–e). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d, e).