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3 results for “Piercipollis”
Text-fig. 42. Scanning electron microscope (SEM) images of monocolpate pollen of Piercipollis sp. 1 (a–c) from an isolated anther and Piercipollis sp. 2 (d–f) from a coprolite (not shown); Torres Vedras locality, Portugal. a) Narrow elongate anther that yielded the pollen in (b) and (c); b) Distal view of pollen grain showing well-developed reticulum that is only loosely attached to the foot layer; note the smooth foot layer (arrowhead) of a grain from which the reticulum has become detached; c) Reticulum showing the smooth muri and long columellae that are mostly detached from the foot layer; d–f) Pollen grains in distal (d, e), and lateral views (f) showing the very long colpus and the well-developed reticulum only loosely attached to the smooth surface of the foot layer; note the main body of the grains (foot layer) does not fill out the whole space of the reticulum (f). Specimens, TV44-S148218 (a–c), TV142-S170216 (d–f). Scale bars 300 Μm (a), 6 Μm (b, d–f), 3 Μm (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. 42. Scanning electron microscope (SEM) images of monocolpate pollen of Piercipollis sp. 1 (a–c) from an isolated anther and Piercipollis sp. 2 (d–f) from a coprolite (not shown); Torres Vedras locality, Portugal. a) Narrow elongate anther that yielded the pollen in (b) and (c); b) Distal view of pollen grain showing well-developed reticulum that is only loosely attached to the foot layer; note the smooth foot layer (arrowhead) of a grain from which the reticulum has become detached; c) Reticulum showing the smooth muri and long columellae that are mostly detached from the foot layer; d–f) Pollen grains in distal (d, e), and lateral views (f) showing the very long colpus and the well-developed reticulum only loosely attached to the smooth surface of the foot layer; note the main body of the grains (foot layer) does not fill out the whole space of the reticulum (f). Specimens, TV44-S148218 (a–c), TV142-S170216 (d–f). Scale bars 300 Μm (a), 6 Μm (b, d–f), 3 Μm (c).
Text-fig. 41. Scanning electron microscope (SEM) images of monocolpate pollen of Piercipollis simplex gen. et sp. nov. from a pollen clump; Torres Vedras locality, Portugal. a) Holotype; pollen clump that yielded the pollen in this Text-figure; b–d) Pollen grains in distal (b), proximal (c) and lateral views (d) showing the very long colpus and the well-developed reticulum that is only loosely attached to the smooth surface of the foot layer; note the large angular lumina, smooth muri and short, sparsely scattered, columellae; note also that main body of pollen grains (foot layer) does not fill out the whole space of the reticulum; e) Reticulum showing the smooth muri loosely attached to the smooth surface of the foot layer by short, sparsely scattered, columellae. Specimen, TV44-S136755 (holotype). Scale bars 300 Μm (a), 6 Μm (b–d), 3 Μm (e). 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. 41. Scanning electron microscope (SEM) images of monocolpate pollen of Piercipollis simplex gen. et sp. nov. from a pollen clump; Torres Vedras locality, Portugal. a) Holotype; pollen clump that yielded the pollen in this Text-figure; b–d) Pollen grains in distal (b), proximal (c) and lateral views (d) showing the very long colpus and the well-developed reticulum that is only loosely attached to the smooth surface of the foot layer; note the large angular lumina, smooth muri and short, sparsely scattered, columellae; note also that main body of pollen grains (foot layer) does not fill out the whole space of the reticulum; e) Reticulum showing the smooth muri loosely attached to the smooth surface of the foot layer by short, sparsely scattered, columellae. Specimen, TV44-S136755 (holotype). Scale bars 300 Μm (a), 6 Μm (b–d), 3 Μm (e).
Text-fig. 31. Scanning electron microscope (SEM) images of isolated pollen of Piercipollis sp. (a, b) and Teebacia sp. (c–e); Catefica locality, Portugal. a) Isolated pollen grain (arrow) adhering to the much larger pollen of Araucariacites sp. in fragment of a conifer cone; note the size difference between the angiosperm and conifer pollen that is typical in Early Cretaceous floras; b) Pollen grain in (a) enlarged showing the extended aperture and homobrochate reticulum with smooth muri supported by long, scattered, columellae; c) Isolated pollen grains adhering to the outer surface of a Saportanthus parvus flower; d) Pollen grain in (c) enlarged showing the open reticulum and muri ornamented by fine transverse ribs; e) Detail of pollen grain in (d) showing the muri supported by long, scattered columellae; note the fine transverse ribs on the muri. Specimens, Catefica 49-S170139-01 (a, b), Catefica 361-S174322-01 (c–e). Scale bars = 50 Μm (a), 20 Μm (c), 6 Μm (b, d), 1.5 Μm (e). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 31. Scanning electron microscope (SEM) images of isolated pollen of Piercipollis sp. (a, b) and Teebacia sp. (c–e); Catefica locality, Portugal. a) Isolated pollen grain (arrow) adhering to the much larger pollen of Araucariacites sp. in fragment of a conifer cone; note the size difference between the angiosperm and conifer pollen that is typical in Early Cretaceous floras; b) Pollen grain in (a) enlarged showing the extended aperture and homobrochate reticulum with smooth muri supported by long, scattered, columellae; c) Isolated pollen grains adhering to the outer surface of a Saportanthus parvus flower; d) Pollen grain in (c) enlarged showing the open reticulum and muri ornamented by fine transverse ribs; e) Detail of pollen grain in (d) showing the muri supported by long, scattered columellae; note the fine transverse ribs on the muri. Specimens, Catefica 49-S170139-01 (a, b), Catefica 361-S174322-01 (c–e). Scale bars = 50 Μm (a), 20 Μm (c), 6 Μm (b, d), 1.5 Μm (e).
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