Text-fig. 51. Number of specimens and number of species for the five categories of angiosperms distinguished from the Catefica mesofossil flora. in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Text-fig. 28. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania inaequalis sp. nov.; Torres Vedras locality, Portugal. a) Holotype; stamen fragment that yielded the pollen in (b–f, k); b) Group of pollen grains showing distal and proximal surfaces and inner surface of anther wall with densely spaced orbicules; c) Inner surface of anther wall showing small, spherical orbicules with microechinate sculpturing; d, e, j–l) Pollen grains in distal and equatorial view (k) showing the long colpus with an irregular margin flanked by narrow bands of poorly differentiated microechinate; note that colpus is aligned perpendicular to the longest axes in elliptical grains and that the pollen wall is almost psilate around the equator and in the distal in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard

November 2019

Text-fig. 28. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania inaequalis...

Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Proencistemon portugallicus gen. et sp. nov.; Catefica locality, Portugal. a, b) Staminate inflorescences composed of numerous tetrasporangiate stamens; each stamen lacks a filament and there is no clear indication of other floral organs; note apparently paired arrangement of stamens in (b) (asterisks); c) Pollen in situ in anther from specimen in (a) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d) Detail of pollen from specimen in (a) showing narrow muri with beaded surface ornamentation; e) Distal and proximal views of pollen in situ in an anther fragment; f) Orbicules attached to surface of in situ pollen from anther fragment. Specimens, Catefica M282-P0341 (holotype, a, c, d), Catefica 150-S174257 (b), Catefica 50-S170393 (e, f). Scale bars = 600 Μm (a, b), 6 Μm (c, e), 1.5 Μm (d, f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Pro...

Text-fig. 13. Scanning electron microscope (SEM) images of "Staminate inflorescence fragment with Clavatipollenites-type pollen sp. 4"; Catefica locality, Portugal. a) Fragment of stamen whorl from staminate inflorescence showing several closely packed, almost sessile stamens that lack a well-developed filament; b, c) Distal and proximal views of pollen grains showing poorly defined aperture with verrucate aperture membrane; d) Detail of pollen wall showing the semitectate-reticulate tectum and long, scattered columellae supporting the narrow muri with finely verrucate supratectal ornamentation. Specimen, Catefica 49-S107782 (a–d). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 13. Scanning electron microscope (SEM) images of "Staminate inflorescence fragment with Cl...

Text-fig. 52. The distribution of aperture and tectum types among the 34 different kinds of angiosperm pollen encountered in the Catefica mesofossil flora. in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 52. The distribution of aperture and tectum types among the 34 different kinds of angiospe...

The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Friis, Else Marie, Crane, Peter R., Pedersen, Kaj Raunsgaard, Mendes, Mário Miguel, Kvaček, Jiří (20...

Text-fig. 45. Scanning electron microscope (SEM) images of "Staminate structure"; Catefica locality, Portugal. a–c) Staminate structure in oblique apical (a), oblique basal (b) and lateral (c) views showing distinct stalk and head with a cluster of about 20 stamens; note bracts at the base of the structure (asterisks) and probable secretory openings in the anther tissues (arrows). Specimen, Catefica 358-S135451 (a–c). Scale bars = 600 Μm (a–c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 45. Scanning electron microscope (SEM) images of "Staminate structure"; Catefica locality,...

Text-fig. 5. Scanning electron microscope images of the seed of Canrightia sp.; Catefica locality, Portugal. a) Seed in ventral view showing the slightly protruding chalaza (ch) at the apex, pointed micropyle (mi) at the base and pitted surface of the endotesta; b) Detail of endotesta surface showing larger pits in longitudinal rows and the finer pits created by crystals in the cells of the endotesta. Specimen, Catefica MM158-P0289 (a, b). Scale bars = 300 Μm (a), 100 Μm (b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 5. Scanning electron microscope images of the seed of Canrightia sp.; Catefica locality, P...

The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard

November 2019

Friis, Else Marie, Crane, Peter R., Pedersen, Kaj Raunsgaard (2019): The Early Cretaceous Mesofossil...

Chloranthales R. BR. ex SIMS 1821

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

OrderChloranthales R.BR. ex SIMS, 1821 R e m a r k s. Chloranthoid fossils are the most diverse gro...

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.; Catefica locality, Portugal. a) Fruiting structure in lateral view showing numerous small, helically arranged wedge-shaped fruitlets each with a slightly differentiated apical stigmatic region (st); no bracts or scars from bracts, perianth or stamens were observed associated with the entire structure or with individual carpels; b) Apical portions of fruitlets showing differentiation of the stigmatic region (st); c) Detail of apical portion of fruitlet showing slightly raised stigmatic region (st) and possible ventral suture. Specimen, Catefica 49-S115851 (holotype, a–c). Scale bars = 300 Μm (a, b), 100 Μm (c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.;...

The Early Cretaceous mesofossil flora of Catefica, Portugal: angiosperms

Friis, Else Marie
Crane, Peter Robert
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

January 2022

Angiosperm mesofossils are described from the Lower Cretaceous Almargem Formation exposed near the v...

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.; Catefica locality, Portugal. a) Fruiting structure in lateral view showing numerous small, helically arranged wedge-shaped fruitlets each with a slightly differentiated apical stigmatic region (st); no bracts or scars from bracts, perianth or stamens were observed associated with the entire structure or with individual carpels; b) Apical portions of fruitlets showing differentiation of the stigmatic region (st); c) Detail of apical portion of fruitlet showing slightly raised stigmatic region (st) and possible ventral suture. Specimen, Catefica 49-S115851 (holotype, a–c). Scale bars = 300 Μm (a, b), 100 Μm (c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.;...

Text-fig. 27. Scanning electron microscope (SEM) images of stamens and pollen of Valvidistemon globiferus gen. et sp. nov.; Catefica locality, Portugal. a) Stamen in oblique lateral view showing laterally hinged valves, massive connective between the thecae and prominent, globular, apical extension of the connective; b) Stamen in oblique lateral view on the opposite side from (a) showing broken laterally hinged valves and distinct endothecium cells; c) Detail of stamen showing the large, longitudinally aligned cells of the massive connective, broad, poorly defined stamen base, and the laterally hinged valves of one of the thecae; d) Reticulate pollen attached to the inside of the anther wall. Specimen, Catefica 49-S107779 (holotype, a–d). Scale bars = 600 Μm (a, b), 100 Μm (c), 20 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 27. Scanning electron microscope (SEM) images of stamens and pollen of Valvidistemon globi...

Text-fig. 9. Scanning electron microscope (SEM) images of stamens and pollen of Proencistemon portugallicus gen. et sp. nov. (a–g) and Proencistemon sp. (h–j); Catefica locality, Portugal. a) Fragment of stamen whorl from staminate inflorescence showing almost sessile anthers; note short bracts at the base of the stamen whorl (arrow) and apparent paired arrangement of the stamens; b) Fragment of stamen whorl showing almost sessile anthers and apparent paired arrangement of the stamens; c) Pollen in situ from stamen whorl in (b) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d–g) Distal views of pollen in situ from in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 9. Scanning electron microscope (SEM) images of stamens and pollen of Proencistemon portug...

Text-fig. 46. Scanning electron microscope (SEM) images of "Rugulate fruit"; Catefica locality, Portugal. a, b) Lateral (a) and ventral (b) views of a rugulate fruit showing the short extension of the sessile stigma at the apex (arrows); c) Irregular surface of fruit that probably reflects an irregular endocarp; note the isodiametric outlines of the epidermal cells; d) Semi-tectate reticulate pollen grains embedded in the remains of a secretion on the stigmatic surface. Specimen, Catefica 154-S101291 (a–d). Scale bars = 300 Μm (a, b), 100 Μm (c), 6 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 46. Scanning electron microscope (SEM) images of "Rugulate fruit"; Catefica locality, Port...

Text-fig. 28. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania inaequalis sp. nov.; Torres Vedras locality, Portugal. a) Holotype; stamen fragment that yielded the pollen in (b–f, k); b) Group of pollen grains showing distal and proximal surfaces and inner surface of anther wall with densely spaced orbicules; c) Inner surface of anther wall showing small, spherical orbicules with microechinate sculpturing; d, e, j–l) Pollen grains in distal and equatorial view (k) showing the long colpus with an irregular margin flanked by narrow bands of poorly differentiated microechinate; note that colpus is aligned perpendicular to the longest axes in elliptical grains and that the pollen wall is almost psilate around the equator and in the distal in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard

November 2019

Text-fig. 28. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania inaequalis...

Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Proencistemon portugallicus gen. et sp. nov.; Catefica locality, Portugal. a, b) Staminate inflorescences composed of numerous tetrasporangiate stamens; each stamen lacks a filament and there is no clear indication of other floral organs; note apparently paired arrangement of stamens in (b) (asterisks); c) Pollen in situ in anther from specimen in (a) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d) Detail of pollen from specimen in (a) showing narrow muri with beaded surface ornamentation; e) Distal and proximal views of pollen in situ in an anther fragment; f) Orbicules attached to surface of in situ pollen from anther fragment. Specimens, Catefica M282-P0341 (holotype, a, c, d), Catefica 150-S174257 (b), Catefica 50-S170393 (e, f). Scale bars = 600 Μm (a, b), 6 Μm (c, e), 1.5 Μm (d, f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Pro...

Text-fig. 13. Scanning electron microscope (SEM) images of "Staminate inflorescence fragment with Clavatipollenites-type pollen sp. 4"; Catefica locality, Portugal. a) Fragment of stamen whorl from staminate inflorescence showing several closely packed, almost sessile stamens that lack a well-developed filament; b, c) Distal and proximal views of pollen grains showing poorly defined aperture with verrucate aperture membrane; d) Detail of pollen wall showing the semitectate-reticulate tectum and long, scattered columellae supporting the narrow muri with finely verrucate supratectal ornamentation. Specimen, Catefica 49-S107782 (a–d). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 13. Scanning electron microscope (SEM) images of "Staminate inflorescence fragment with Cl...

Text-fig. 52. The distribution of aperture and tectum types among the 34 different kinds of angiosperm pollen encountered in the Catefica mesofossil flora. in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 52. The distribution of aperture and tectum types among the 34 different kinds of angiospe...

The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Friis, Else Marie, Crane, Peter R., Pedersen, Kaj Raunsgaard, Mendes, Mário Miguel, Kvaček, Jiří (20...

Text-fig. 45. Scanning electron microscope (SEM) images of "Staminate structure"; Catefica locality, Portugal. a–c) Staminate structure in oblique apical (a), oblique basal (b) and lateral (c) views showing distinct stalk and head with a cluster of about 20 stamens; note bracts at the base of the structure (asterisks) and probable secretory openings in the anther tissues (arrows). Specimen, Catefica 358-S135451 (a–c). Scale bars = 600 Μm (a–c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 45. Scanning electron microscope (SEM) images of "Staminate structure"; Catefica locality,...

Text-fig. 5. Scanning electron microscope images of the seed of Canrightia sp.; Catefica locality, Portugal. a) Seed in ventral view showing the slightly protruding chalaza (ch) at the apex, pointed micropyle (mi) at the base and pitted surface of the endotesta; b) Detail of endotesta surface showing larger pits in longitudinal rows and the finer pits created by crystals in the cells of the endotesta. Specimen, Catefica MM158-P0289 (a, b). Scale bars = 300 Μm (a), 100 Μm (b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 5. Scanning electron microscope images of the seed of Canrightia sp.; Catefica locality, P...

The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard

November 2019

Friis, Else Marie, Crane, Peter R., Pedersen, Kaj Raunsgaard (2019): The Early Cretaceous Mesofossil...

Chloranthales R. BR. ex SIMS 1821

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

OrderChloranthales R.BR. ex SIMS, 1821 R e m a r k s. Chloranthoid fossils are the most diverse gro...

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.; Catefica locality, Portugal. a) Fruiting structure in lateral view showing numerous small, helically arranged wedge-shaped fruitlets each with a slightly differentiated apical stigmatic region (st); no bracts or scars from bracts, perianth or stamens were observed associated with the entire structure or with individual carpels; b) Apical portions of fruitlets showing differentiation of the stigmatic region (st); c) Detail of apical portion of fruitlet showing slightly raised stigmatic region (st) and possible ventral suture. Specimen, Catefica 49-S115851 (holotype, a–c). Scale bars = 300 Μm (a, b), 100 Μm (c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.;...

The Early Cretaceous mesofossil flora of Catefica, Portugal: angiosperms

Friis, Else Marie
Crane, Peter Robert
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

January 2022

Angiosperm mesofossils are described from the Lower Cretaceous Almargem Formation exposed near the v...

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.; Catefica locality, Portugal. a) Fruiting structure in lateral view showing numerous small, helically arranged wedge-shaped fruitlets each with a slightly differentiated apical stigmatic region (st); no bracts or scars from bracts, perianth or stamens were observed associated with the entire structure or with individual carpels; b) Apical portions of fruitlets showing differentiation of the stigmatic region (st); c) Detail of apical portion of fruitlet showing slightly raised stigmatic region (st) and possible ventral suture. Specimen, Catefica 49-S115851 (holotype, a–c). Scale bars = 300 Μm (a, b), 100 Μm (c). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 21. Scanning electron microscope (SEM) images of Ibericarpus cuneiformis gen. et sp. nov.;...

Text-fig. 27. Scanning electron microscope (SEM) images of stamens and pollen of Valvidistemon globiferus gen. et sp. nov.; Catefica locality, Portugal. a) Stamen in oblique lateral view showing laterally hinged valves, massive connective between the thecae and prominent, globular, apical extension of the connective; b) Stamen in oblique lateral view on the opposite side from (a) showing broken laterally hinged valves and distinct endothecium cells; c) Detail of stamen showing the large, longitudinally aligned cells of the massive connective, broad, poorly defined stamen base, and the laterally hinged valves of one of the thecae; d) Reticulate pollen attached to the inside of the anther wall. Specimen, Catefica 49-S107779 (holotype, a–d). Scale bars = 600 Μm (a, b), 100 Μm (c), 20 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 27. Scanning electron microscope (SEM) images of stamens and pollen of Valvidistemon globi...

Text-fig. 9. Scanning electron microscope (SEM) images of stamens and pollen of Proencistemon portugallicus gen. et sp. nov. (a–g) and Proencistemon sp. (h–j); Catefica locality, Portugal. a) Fragment of stamen whorl from staminate inflorescence showing almost sessile anthers; note short bracts at the base of the stamen whorl (arrow) and apparent paired arrangement of the stamens; b) Fragment of stamen whorl showing almost sessile anthers and apparent paired arrangement of the stamens; c) Pollen in situ from stamen whorl in (b) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d–g) Distal views of pollen in situ from in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 9. Scanning electron microscope (SEM) images of stamens and pollen of Proencistemon portug...

Text-fig. 46. Scanning electron microscope (SEM) images of "Rugulate fruit"; Catefica locality, Portugal. a, b) Lateral (a) and ventral (b) views of a rugulate fruit showing the short extension of the sessile stigma at the apex (arrows); c) Irregular surface of fruit that probably reflects an irregular endocarp; note the isodiametric outlines of the epidermal cells; d) Semi-tectate reticulate pollen grains embedded in the remains of a secretion on the stigmatic surface. Specimen, Catefica 154-S101291 (a–d). Scale bars = 300 Μm (a, b), 100 Μm (c), 6 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 46. Scanning electron microscope (SEM) images of "Rugulate fruit"; Catefica locality, Port...

Text-fig. 28. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania inaequalis sp. nov.; Torres Vedras locality, Portugal. a) Holotype; stamen fragment that yielded the pollen in (b–f, k); b) Group of pollen grains showing distal and proximal surfaces and inner surface of anther wall with densely spaced orbicules; c) Inner surface of anther wall showing small, spherical orbicules with microechinate sculpturing; d, e, j–l) Pollen grains in distal and equatorial view (k) showing the long colpus with an irregular margin flanked by narrow bands of poorly differentiated microechinate; note that colpus is aligned perpendicular to the longest axes in elliptical grains and that the pollen wall is almost psilate around the equator and in the distal in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard

November 2019

Text-fig. 28. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania inaequalis...

Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Proencistemon portugallicus gen. et sp. nov.; Catefica locality, Portugal. a, b) Staminate inflorescences composed of numerous tetrasporangiate stamens; each stamen lacks a filament and there is no clear indication of other floral organs; note apparently paired arrangement of stamens in (b) (asterisks); c) Pollen in situ in anther from specimen in (a) showing poorly defined trichotomocolpate aperture and semitectate-reticulate tectum; d) Detail of pollen from specimen in (a) showing narrow muri with beaded surface ornamentation; e) Distal and proximal views of pollen in situ in an anther fragment; f) Orbicules attached to surface of in situ pollen from anther fragment. Specimens, Catefica M282-P0341 (holotype, a, c, d), Catefica 150-S174257 (b), Catefica 50-S170393 (e, f). Scale bars = 600 Μm (a, b), 6 Μm (c, e), 1.5 Μm (d, f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 8. Scanning electron microscope (SEM) images of staminate inflorescences and pollen of Pro...

Text-fig. 13. Scanning electron microscope (SEM) images of "Staminate inflorescence fragment with Clavatipollenites-type pollen sp. 4"; Catefica locality, Portugal. a) Fragment of stamen whorl from staminate inflorescence showing several closely packed, almost sessile stamens that lack a well-developed filament; b, c) Distal and proximal views of pollen grains showing poorly defined aperture with verrucate aperture membrane; d) Detail of pollen wall showing the semitectate-reticulate tectum and long, scattered columellae supporting the narrow muri with finely verrucate supratectal ornamentation. Specimen, Catefica 49-S107782 (a–d). Scale bars = 600 Μm (a), 6 Μm (b, c), 1.5 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Friis, Else Marie
Crane, Peter R.
Pedersen, Kaj Raunsgaard
Mendes, Mário Miguel
Kvaček, Jiří

December 2022

Text-fig. 13. Scanning electron microscope (SEM) images of "Staminate inflorescence fragment with Cl...

Text-fig. 51. Number of specimens and number of species for the five categories of angiosperms distinguished from the Catefica mesofossil flora. in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Abstract

Extracted data

Text-fig. 51. Number of specimens and number of species for the five categories of angiosperms distinguished from the Catefica mesofossil flora. in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms

Abstract

Extracted data

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