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5 results for “Goczania”
Text-fig. 48. Scanning electron microscope (SEM) images of monocolpate pollen from a coprolite; Torres Vedras locality, Portugal. a) Coprolite that yielded the pollen in this Text-figure as well as several other kinds of pollen; b) Reticulum of pollen grain showing the tall, sharp muri and obconical columellae; c–e) Grains of Goczania inaequalis sp. nov. intermixed with pollen grains that have a coarse, loosely attached reticulum with tall, sharp muri and sparse columellae; note the weak transverse striations on the muri and that the reticulum is much larger than the main body of the grain that it encloses. Specimen, TV44-S148023. Scale bars 300 Μm (a), 6 Μm (c–e), 3 Μm (b). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 48. Scanning electron microscope (SEM) images of monocolpate pollen from a coprolite; Torres Vedras locality, Portugal. a) Coprolite that yielded the pollen in this Text-figure as well as several other kinds of pollen; b) Reticulum of pollen grain showing the tall, sharp muri and obconical columellae; c–e) Grains of Goczania inaequalis sp. nov. intermixed with pollen grains that have a coarse, loosely attached reticulum with tall, sharp muri and sparse columellae; note the weak transverse striations on the muri and that the reticulum is much larger than the main body of the grain that it encloses. Specimen, TV44-S148023. Scale bars 300 Μm (a), 6 Μm (c–e), 3 Μm (b).
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
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
Text-fig. 27. Scanning electron microscope (SEM) images of monocolpate pollen grains of Goczania rugosa gen. et sp. nov. in situ in dithecate, tetrasporangiate stamens; Torres Vedras locality, Portugal. a, b) Stamens in apical view (holotype a) showing the paired pollen sacs; c) Pollen grain from stamen fragment in (b) showing short aperture and rugulate-microechinate surface; d–f) Pollen grains from stamen fragment in (a) showing a folded distal aperture and rugulate-microechinate surface; note the orbicules of different sizes. Specimens, TV44-S136688 (holotype; a, c–f), TV44-S136664 (b). Scale bars 300 Μm (a,b), 6 Μm (c–e), 3 Μm (f). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 27. Scanning electron microscope (SEM) images of monocolpate pollen grains of Goczania rugosa gen. et sp. nov. in situ in dithecate, tetrasporangiate stamens; Torres Vedras locality, Portugal. a, b) Stamens in apical view (holotype a) showing the paired pollen sacs; c) Pollen grain from stamen fragment in (b) showing short aperture and rugulate-microechinate surface; d–f) Pollen grains from stamen fragment in (a) showing a folded distal aperture and rugulate-microechinate surface; note the orbicules of different sizes. Specimens, TV44-S136688 (holotype; a, c–f), TV44-S136664 (b). Scale bars 300 Μm (a,b), 6 Μm (c–e), 3 Μm (f).
Text-fig. 29. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania punctata sp. nov.; Torres Vedras locality, Portugal. a–c) Holotype; anther fragment (a) with group of pollen grains showing the distal face (b, c) with clearly delimited colpus, the almost psilate tectum with occasional small perforations, and poorly differentiated microechinae on the proximal face (b). Specimen, TV44-S148024 (holotype). Scale bars 300 Μm (a), 6 Μm (b, c). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 29. Scanning electron microscope (SEM) images of monocolpate pollen of Goczania punctata sp. nov.; Torres Vedras locality, Portugal. a–c) Holotype; anther fragment (a) with group of pollen grains showing the distal face (b, c) with clearly delimited colpus, the almost psilate tectum with occasional small perforations, and poorly differentiated microechinae on the proximal face (b). Specimen, TV44-S148024 (holotype). Scale bars 300 Μm (a), 6 Μm (b, c).
Text-fig. 20. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a) and scanning electron microscope (SEM, b–h) images of fruits of Appomattoxia sp. (a–d) and anther and pollen of Goczania rugosa (e–h); Catefica locality, Portugal. a) Surface rendering of fruit in lateral view showing densely spaced hairs, some with delicate coiled tips; b) Fruit in lateral view showing short, densely spaced hairs and apical stigmatic region; c, d) Detail of fruit surface and hairs from fruit in (b); e) Fragmentary anther showing four pollen sacs; f) Proximal view of pollen grains from an abraded anther showing microechinate surface of pollen wall and clusters of small, spiny orbicules; g, h) Proximal (g) and distal (h) views of pollen grains from an isolated pollen sac, showing short colpus (h), tectate pollen wall and microechinate surface ornamentation. Specimens, Catefica 49-S174913 (a), Catefica 49-S107794 (b–d), Catefica 50-S170391 (e), Catefica 49-S170138 (f), Catefica 49-S170143 (g, h). Scale bars = 300 Μm (a, b, e), 100 Μm (c), 50 Μm (d), 6 Μm (f–h). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 20. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a) and scanning electron microscope (SEM, b–h) images of fruits of Appomattoxia sp. (a–d) and anther and pollen of Goczania rugosa (e–h); Catefica locality, Portugal. a) Surface rendering of fruit in lateral view showing densely spaced hairs, some with delicate coiled tips; b) Fruit in lateral view showing short, densely spaced hairs and apical stigmatic region; c, d) Detail of fruit surface and hairs from fruit in (b); e) Fragmentary anther showing four pollen sacs; f) Proximal view of pollen grains from an abraded anther showing microechinate surface of pollen wall and clusters of small, spiny orbicules; g, h) Proximal (g) and distal (h) views of pollen grains from an isolated pollen sac, showing short colpus (h), tectate pollen wall and microechinate surface ornamentation. Specimens, Catefica 49-S174913 (a), Catefica 49-S107794 (b–d), Catefica 50-S170391 (e), Catefica 49-S170138 (f), Catefica 49-S170143 (g, h). Scale bars = 300 Μm (a, b, e), 100 Μm (c), 50 Μm (d), 6 Μm (f–h).
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