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131 results for “palynology”
FIGURE 1 in New palynological evidence for the age of the Beda Formation, Sirte Basin, Libya
FIGURE 1. Structural elements of the Sirt Basin, Libya showing locations of major oil and gas fields. Location X indicates wells X13, X23, and X43 in the Hagfa Trough and location Y indicates well Y47 on the Beda Platform. (modified after Burwood et al. 2003, NARG website).
FIGURE 4. Pollen grains and fungal remains. 4.1 in New palynological evidence for the age of the Beda Formation, Sirte Basin, Libya
FIGURE 4. Pollen grains and fungal remains. 4.1. Arecipites indicus (6854' 8", Slide 2: 95 x 33.5). Size: 14 x 6 µm. 4.2. Proxapertites cursus (6863', Slide 1: 98.4 x 32.4). Size: 14 µm. 4.3. Retitricolpites sp. (6863', Slide 1: 101 x 27). Size: 8 µm. 4.4. Palmaepollenites sp. (6863', Slide 1: 107.4 x 35.8). Size: 23x11 µm. 4.5. Proxapertites operculatus (6863', Slide 2: 105.2 x 39). Size: 15x8 µm. 4.6. Tricolpites microreticulatus (6863', Slide 2: 105.5 x 34.5). Size: 8 µm. 4.7. Tricolporopollenites sp. (6863', Slide 2: 94x31.5). Size: 16x 12 µm. 4.8. Arecipites indicus (6863', Slide 2: 93.8x39.2). Size: 19x 11 µm. 4.9. Palmidites sp. (6863', Slide 2: 95.7x31.2). Size: 16x 8 µm. 4.10. Palmidites sp. (6863', Slide 2: 92x37.6). Size: 18x12 µm. 4.11. Retibrevitricolpites sp. (6863', Slide 2: 92.4x25). Size: 10 µm. 4.12. Brevitricolpites sp. (6863', Slide 2: 104.4x33.5). Size: 10 µm. 4.13. Neocouperipollis sp. (6863', Slide 2: 91.5x29.6). Size: 16 µm. 4.14. Trisyncoloporopollenites sp. (6863', Slide 2: 90x23.2). Size: 12 µm. 4.15. Fungal spore (6863, slide 1: 99.6 x 33). Size: 30 µm. 4.16. Fungal remain (6863, slide 2: 105.6 x 30.3). Size: 23x8 µm.
FIGURE 3 in New palynological evidence for the age of the Beda Formation, Sirte Basin, Libya
FIGURE 3. Dinoflagellate cysts, acritarchs and foraminiferal remains. 3.1. Homotryblium floripes (6871' 4", slide 1: 96.5x30.5). Cyst diameter 32 µm; process length 11-14 µm. 3.2. Adnatosphaeridium multispinosum (6872' 2", slide 1: 101.9x36). Cyst diameter 22 µm; process length 8-10 µm. 3.3. Homotryblium floripes (6871' 4", slide 2: 103.5x35.7). Cyst diameter 40 µm; process length 11-13 µm. 3.4. Homotryblium floripes (6872' 2", slide 1: 96.8x38). Cyst diameter 42 µm; process length 13-15 µm. 3.5. Tityrosphaeridium cantharellus (6872' 2", slide 1: 97.8x28.7). Cyst diameter 36 µm; process length 11x14 µm. 3.6. Apteodinium australiense (6872' 2", slide 2: 108x39.6). Cyst diameter 22x16 µm. 3.7. Leiosphaeridia sp. (6872' 2", slide 1: 98.2x24.6). Cyst diameter 21x14 µm. 3.8. cf. Pterospermella sp. (6872' 2", slide 1: 98x24). Cyst diameter 25x21.5 µm. 3.9. Batiacasphaera cf. sphaerica Stover, 1977 (6872' 2", slide 2: 104.5x31.5). Cyst diameter 22x16 µm. 3.10. Foraminiferal lning (6863, slide 1: 94.2 x 28). Size: 40 µm. 3.11. Micrhystridium sp. (6863, slide 2: 103.4 x 30). Cyst diameter 15 µm; and process length 3-4 µm. 3.12. Micrhystridium sp. (6863, Slide 2: 103.2 x 32.3). diam. 7 µm; proc. 2-3 µm.
FIGURE 2. Dinoflagellate cysts. 2.1 in New palynological evidence for the age of the Beda Formation, Sirte Basin, Libya
FIGURE 2. Dinoflagellate cysts. 2.1. cf. Cyclonephelium sp. (6854' 8", slide 1: 97.2 x 23). Size: 41x31 µm. 2.2. Canningia sp. (6854' 8", slide 2: 95 x 37.7). Size: 28x17 µm. 2.3. Spiniferites ramosus group (6854' 8", slide 2: 95 x 37.7). Cyst diameter 19 µm; and process length 3-4.5 µm. 2.4. Batiacasphaera compta (6871' 4", Slide 1: 91.5x33.4). Cyst diameter 32x27 µm. 2.5. Homotryblium floripes (6871, slide 1: 95.9x32.1) Cyst diameter 38µm; and process length 12-15 µm. 2.6. Spiniferites ramosus group (6863, slide 2: 97.8 x 33). Cyst diameter 27 µm; and process length 5 µm. 2.7. Polysphaeridium subtile (6863, slide 2: 104.8 x 38). Cyst diameter 13 µm; process length 2-3 µm. 2.8. Operculodinium centrocarpum (6863, slide 1: 100 x 38.8). Cyst diameter 28x24µm; and process length 4-5 µm. 2.9. Fibrocysta cf. bipolaris (6871' 4", slide 1: 96.5x30.5). Cyst diameter 42x34 µm; process length 12-18 µm. 2.10. Homotryblium floripes (6871' 4", slide 1: 94.7x28.2). Cyst diameter 42x31 µm; process length 12-15 µm.
Linked collectors and determiners for: Canadian Museum of Nature Palynology Collection.
Natural history specimen data linked to collectors and determiners held within, "Canadian Museum of Nature Palynology Collection". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/21a0cb45-f0ec-4901-a868-cd45abe74601">https://bionomia.net/dataset/21a0cb45-f0ec-4901-a868-cd45abe74601</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/21a0cb45-f0ec-4901-a868-cd45abe74601">https://gbif.org/dataset/21a0cb45-f0ec-4901-a868-cd45abe74601</a>. Formatted as a Frictionless Data package.
Text-fig. 4. Palynological diagrams of Late Miocene deposits, North Caucasus. a. Tuapse highway bridge. b. Gaverdovsky. c. Volchaya Balka. in Late Miocene (Early Turolian) Vertebrate Faunas And Associated Biotic Record Of The Northern Caucasus: Geology, Taxonomy, Palaeoenvironment, Biochronology
Text-fig. 4. Palynological diagrams of Late Miocene deposits, North Caucasus. a. Tuapse highway bridge. b. Gaverdovsky. c. Volchaya Balka.
Supplementary Materials S1-S4 to Leipe et al., 2024. Human activities, early farming and natural environment in the north-western Kanto Plain (Central Japan) during the Final Jomon–Early Kofun period (990 cal BCE–330 cal CE) inferred from palynological and archaeobotanical records
<p>This dataset represents the Supplementary Materials S1-S4 to Leipe et al. (2024), <em>QEH</em> 2, 100030.</p> <p>Leipe et al., 2024. Human activities, early farming and natural environment in the north-western Kanto Plain (Central Japan) during the Final Jomon–Early Kofun period (990 cal BCE–330 cal CE) inferred from palynological and archaeobotanical records. <em>Quaternary Environments and Humans</em> 2, 100030 (doi: <a href="https://doi.org/10.1016/j.qeh.2024.100030">https://doi.org/10.1016/j.qeh.2024.100030</a>).</p> <p><strong>Supplementary Material S1</strong>: Pollen and non-pollen palynomorph records of a section (490.5-668.5 cm depth) of the MJ20 sediment core from Morinji Marsh, Tatebayashi City, Gunma Prefecture, Kanto region, Central Japan.</p> <p><strong>Supplementary Material S2</strong>. Sample-specific total counts of macrobotanical (seeds and fruits) and fungal remains and floated litres of sediment samples from ash pits (Yayoi period) and hearths (Kofun period) of the Ikegami archaeological site, Kumagaya City, Saitama Prefecture, Kanto region, Central Japan.</p> <p><strong>Supplementary Material S3</strong>. Photographs of charred remains of<em> Juglans ailantifolia</em> and <em>Aesculus turbinata</em> from the Middle Yayoi period ash pit samples at the Ikegami archaeological site, Kumagaya City, Saitama Prefecture, Kanto region, Central Japan.</p> <p><strong>Supplementary Material S4</strong>. Description of the As-B tephra in the MJ20 sediment core from Morinji Marsh, Tatebayashi City, Gunma Prefecture, Kanto region, Central Japan.</p>
Data from: Palynology of a short sequence of the Lower Devonian Beartooth Butte Formation at Cottonwood Canyon (Wyoming): Age, depositional environments and plant diversity
<p>The Beartooth Butte Formation hosts the most extensive Early Devonian macroflora of western North America. The age of the flora at Cottonwood Canyon (Wyoming) has been constrained to the Lochkovian-Pragian interval, based on fish biostratigraphy and unpublished palynological data. We present a detailed palynological analysis of the plant-bearing layers at Cottonwood Canyon. The palynomorphs comprise 32 spore, five cryptospore, two prasinophycean algae and an acritarch species. The stratigraphic ranges of these palynomorphs indicate a late Lochkovian - Pragian age, confirming previous age assignments. Analyses on samples from three different depositional environments of the plant-bearing sequence – layers with in situ lycophyte populations, flood layers that buried those populations and an organic matter accumulation zone within a flood layer – demonstrate distinct palynofacies. Comparisons between palynomorph and plant macrofossil diversity reveal some discrepancies. Whereas zosterophylls and lycophytes, most diverse and abundant among the macrofossils, have only one known corresponding spore type (assignable to zosterophylls) in the palynomorph assemblage, the trimerophytes, rare in the macrofossil assemblage, are represented by three spore types. Some of these discrepancies reflect taphonomic differences between macrofossils and palynomorphs, others could be due to the fact that the parent plants of most palynomorph types in the Cottonwood Canyon assemblage are unknown. These observations emphasize the need for concerted efforts to bring together the knowledge of macro- and microfloras within Early Devonian localities. Nevertheless, given the palaeophytogeographic significance of the Beartooth Butte Formation flora, its palyno- and macrofossil assemblages, taken together, provide new data relevant to future discussions of Early Devonian biogeography.</p>
A new species from an inselberg in the Brazilian Atlantic Forest: <em>Stachytarpheta forzzae</em> (Verbenaceae), supported by morphological, palynological, and anatomical evidence
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Data from: Palynology of a short sequence of the Lower Devonian Beartooth Butte Formation at Cottonwood Canyon (Wyoming): Age, depositional environments and plant diversity
Open the record for dataset details and reuse information.
The new Garba Guracha palynological sequence: revision and data expansion
<p>Dataset by Graciela Gil-Romera et al. submitted to "Palaeocology of Africa". dictionary.csv is the file containing information on how taxa are attibuted to different functional and bioclimatic types and pollen.csv contains all raw pollen data. Charcoal data presented in Fig3 can be downloaded from here: https://github.com/ggilromera/BaleFire The age-depth model has been built using the dates and code published here: https://link.springer.com/article/10.1007/s10933-020-00138-w#Sec36 And the raw and calibrated dated samples can be found in the supmat_bittner_etal_2020.docx file.</p>
Data from: Dynamics of marsh-mangrove ecotone since the mid-Holocene: a palynological study of mangrove encroachment and sea level rise in the Shark River Estuary, Florida
Sea level rise and the associated inland shift of the marsh-mangrove ecotone in south Florida have raised many scientific and management concerns in recent years. Holocene paleoecological records can provide an important baseline to shed light on the long-term dynamics of vegetation changes across this ecotone in the past, which is needed to predict the future. In this study, we present palynological, X-ray fluorescence, and loss-on ignition data from four sedimentary cores recovered from a 20-km marine-to-freshwater transect along the Shark River Estuary, southwest Everglades, to document the patterns and processes of coastal vegetation changes in response to sea level rise since the mid-Holocene. Our record indicates that freshwater marsh progressively replaced marl prairies at the Shark River Estuary between 5700 and 4400 cal yr BP. As marine transgression continued, marine influence reached the threshold necessary for mangroves to establish at the current mouth of the Shark River Slough at 3800 cal yr BP. During the next 3000 years, although sea level rise in the Western North Atlantic slowed down to 0.4 mm/yr, a spatial and temporal gradient was evident as the marsh-mangrove ecotone shifted inland by 20 km from 3800 to 800 cal yr BP, accompanied by a gradual landward replacement of freshwater marsh by mangrove forest. If sea level continues to rise at 2.33 mm/yr in the 21st century in south Florida, it is possible that marine influence will reach the threshold for mangroves to establish in the central Everglades, and we could expect a much more aggressive mangrove encroachment toward the northern and interior parts of south Florida in the next few centuries.
PLATE 2 in Palynological Study of Mimosoideae (Fabaceae) from Baghdad (Iraq)
PLATE 2. Monads polar and equatorial views and tetrad of studied Mimosoideae taxa in light microscope, A: polar view, B: equatorial view. (scale bar = 15 µm).
PLATE 5 in Palynological Study of Mimosoideae (Fabaceae) from Baghdad (Iraq)
PLATE 5. Polyads of studied Mimosoideae taxa in scanning electron microscope, A: Acacia saligna, B: Vachellia farnesiana, C: Albizia lebbeck, D: Albizia lebbeck var. pubescens, E: Albizia julibrissin, F: Pithecellobium dulce, G: Calliandra haematocephala, H: Calliandra surinamensis.
PLATE 3 in Palynological Study of Mimosoideae (Fabaceae) from Baghdad (Iraq)
PLATE 3. Scanning electron microscope of monads and tetrad of studied Mimosoideae taxa, A: Leucaena leucocephala subsp. glabrata, B: Leucaena leucocephala subsp. leucocephala, C: Prosopis farcta, D: Neltuma juliflora, E: Mimosa pudica.
FIGURE 5. A in Morphological, Anatomical, Palynological and Karyological Studies on Endemic Alyssum kaynakiae (Brassicaceae) from Southwest Region of Turkey
FIGURE 5. A. Root cross-section (×100), B. Root cross-section (×400), C. Stem cross-section (×100), D. Stem cross-section (×400), E. Leaves (×100), F. Leaves (×400); e: epidermis, cl: collenchyma, phl: phloem, xy: xylem, co: cortex, sp: spongy parenchyma, pp: palisade parenchyma, bs: bundle sheat, v: vascular bundle (11/17 BULU).
FIGURE 2 in Morphological, Anatomical, Palynological and Karyological Studies on Endemic Alyssum kaynakiae (Brassicaceae) from Southwest Region of Turkey
FIGURE 2. Micromorphology of A. kaynakiae. A. Lepidote hairs on cauline surface, B. Lepidote hairs on leaves, C. Lepidote hairs on the upper surface of leaves, D. Lepidote and stellate hairs on calyx surface, E. Fruit surface, F. Stylus, G. Seed, H. Seed surface—(10/17 BULU).
FIGURE 3 in Morphological, Anatomical, Palynological and Karyological Studies on Endemic Alyssum kaynakiae (Brassicaceae) from Southwest Region of Turkey
FIGURE 3. The pollen morphology of A. kaynakiae. A. Reticulate ornamentation of the pollen grain, B. Colpus of the pollen grain (10/17 BULU).
FIGURE 1 in Morphological, Anatomical, Palynological and Karyological Studies on Endemic Alyssum kaynakiae (Brassicaceae) from Southwest Region of Turkey
FIGURE 1. General view of A. kaynakiae—Locality: Denizli: Üzümlü—Çameli, around Kirazlıyayla (10/17 BULU).
FIGURE 10 in Anatomical and palynological comparison of three endemic species of Teucrium sect. Teucrium of Turkey
FIGURE 10. Box Plots of examined palynological characters (P: polar axis, E: equatorial axis, Clt: colpus width, Clg: colpus length, t: apocolpium, Amb: pollen grains measurements of at polar view.
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