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178 results for “Spitsbergen”
Fig. 10 in Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities
Fig. 10. Median section of orthocones from bed PO 131 of the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A. Catoraphiceras sp., FMNH-P30425, with graptolite trapped in siphuncle. B–D. Proterocameroceras vallhallfonnense sp. nov. B. Specimen FMNH-P30429. C–D. Holotype, specimen FMNH-P30427. C. Complete specimen with asymmetric endosiphuncular deposits and imploded septa. D. Detail of holotype showing dorsal side of connecting ring and septal necks. Scale bars: A–B = 2 mm; C = 10 mm; D = 1 mm.
Fig. 11 in Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities
Fig. 11. Reconstruction and interpretation of details of connecting ring and septal necks in orthoconic cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A. Order, genus and species indet. B, FMNH-P30424, see also Fig. 49A. B. Buttsoceras buldrebreenense sp. nov., FMNH-P30421, holotype, see also Fig. 35A. C. Proterocameroceras vallhallfonnense sp. nov., FMNH-P30429, see also Fig. 10B. Without scale.
Results of the geochemical and magnetic studies on cryodust from glacial cores of the Southern Spitsbergen (Svalbard, Norway)
<p>Results of the geochemical and magnetic studies on natural mineral aerosol deposited and trapped in glaciers (cryodust). Samples were collected from glacial cores taken from five glaciers of Southern Spitsbergen (Svalbard, Norway). </p> <p>The samples were collected by means of a hand-operated Kovacs Enterprise® Mark II coring system. Samples (90 mm in diameter) were packed into polyethylene bags, secured, and transported to the Polish Polar Station Hornsund. The core samples were rinsed using deionized water (Polwater DL100; Norm PN-EN ISO 117 3696:1999; conductivity <0.06 μS/cm) and melted at room temperature in the closed new polyethylene bags. After melting samples were filtered through pre-rinsed sterile Millipore Mixed Cellulose Esters filters (white gridded and 0.45 𝜇𝜇m pore size). After filtration, the filters with residuum were dryer at the temperature of 60<sup>o</sup>C.</p> <p>Solid particulates of cryodust were subjected to analysis by Electron MicroProbe (EMP) with special attention paid to their internal structure. A scanning electron microscope (SEM) fitted with a backscattered electron (BSE) detector was used to trace grains topography and composition. Special attention was given to monazite chemical dating. Magnetic methods comprised analyses of magnetic susceptibility <em>κ</em> vs temperature <em>T</em> variations and determination of magnetic hysteresis parameters.</p> <p>More about the methodology, analyses and results can be found here: <a href="https://doi.org/10.3390/atmos11121325">https://doi.org/10.3390/atmos11121325</a></p>
Fig. 10 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 10. Basicranium of ophthalmosaurid ichthyosaur Undorosaurus? kristiansenae Druckenmiller, Hurum, Knutsen, and Nakrem, 2012 (PMO 214.578, holotype) from Spitsbergen, Svalbard, Slottsmøya Member Lagerstätte, Tithonian. A. Basioccipital posterior (A1), right lateral (A2), ventral (A3) and dorsal (A4) views. B. Basisphenoid in ventral (B1), dorsal (B2), and anterior (B3) views. C. Left stapes in posterior (C1), medial (C2), anterior (C3), and dorsal (C4) views.
Fig. 3 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 3. Explanatory drawing of the skeleton of ophthalmosaurid ichthyosaur Keilhauia sp. (PMO 222.667) from Spitsbergen, Svalbard, Slottsmøya Member Lagerstätte, Tithonian. Modified and corrected from Delsett et al. (2016).
Fig. 6 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 6. Cranial elements of ophthalmosaurid ichthyosaur Keilhauia sp. (PMO 222.667) from Spitsbergen, Svalbard, Slottsmøya Member Lagerstätte, Tithonian. A. Lower jaw fragment in dorsal view (anterior to the left). A3, detail of inner structures with arrow showing position of ventral-pointing tooth from the upper jaw, anterior to the right, in dorsal view. B. Right articular in medial (B1) and lateral (B2) views. C. Hyoid in lateral or medial view (anterior to the left). D–F. Teeth. Photographs (A1, B–F), μCT scan images (A2, A3).
Fig. 1. A in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 1. A. Map of Svalbard archipelago and the main island Spitsbergen with excavation area marked with an asterisk. B. Geological map of the excavation sites for the SML ophthalmosaurid specimens described and discussed in this paper (red dots); see Fig. 2. Adapted from Hurum et al. (2012).
Fig. 2 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 2. Composite section of the Slottsmøya Member Lagerstätte with the ophthalmosaurids described and discussed in the text. Specimens described in this paper marked with an asterisk. Modified from Delsett et al. (2017). A bed with a high abundance of echinoderm fossils is set as marker bed (0 m) in the section (Hurum et al. 2012; Rousseau and Nakrem 2012).
Fig. 9 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 9. Elements of Ophthalmosauridae indet. (PMO 224.252) from Spitsbergen, Svalbard, Slottsmøya Member Lagerstätte, Tithonian. A. Left quadrate in posterior view. B. Hyoid in anterior or posterior view. C. Rib in anterior or posterior view.
Fig. 4 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 4. Rostrum fragment of ophthalmosaurid ichthyosaur Keilhauia sp. PMO 222.667) from Spitsbergen, Svalbard, Slottsmøya Member Lagerstätte, Tithonian. Premaxillae, nasals, and vomer in dorsal (A1) and lateral A2) views. Anterior to the right.
Fig. 8 in Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)
Fig. 8. Skull of Ophthalmosauridae indet. (PMO 224.252) from Spitsbergen, Svalbard, Slottsmøya Member Lagerstätte, Tithonian; in dorsal (A1, A3) and ventral (A2, A4) views. Photographs (A1, A2) and interpretative drawings (A3, A4). L, left; R, right; paf, parietal foramen; suf, supratemporal fenestra.
Fig. 4 in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 4. Lithological log and distribution of bryozoans through the Hyrnefjellet section. Legend as in Fig. 3.
Fig. 10 in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 10. External views of selected bryozoan growth forms. A, C. Ascopora birkenmajeri sp. nov. A. Cross−sections of zoaria. Hyrnefjellet, sample ZPAL Br. 12/H7, PMO 170.903. C. Large zoarium. Holotype. Gipsvika, PMO 170.913. B. Ascopora sp. Zoarium surface. Hyrnefjellet, sample ZPAL Br. 12/H24, PMO 170.907. D. Rectifenestella nikiforovae (Shul'ga−Nesterenko, 1936). Gipsvika, PMO 170.915B. E–G. Ascopora sterlitamakensis Nikiforova, 1939. E. Oblique cut abnormal thick zoarium displaying regenerated growth (bottom). Hyrnefjellet, sample Br.12/G15, PMO 170.891. F. Oblique longitudinal section of regular thin zoarium displaying zooecial apertures (bottom). Hyrnefjellet, sample ZPAL Br. 12/H4, PMO 170.893. G. Longitudinal section near point of bifurcations displaying thick endozone (dark) and slightly silicified exozone (white). Gipsvika, PMO 170.911 (original for thin sections 170.911D and E). H. Coscinium cyclops Keyserling, 1846. Zoarium surface showing large fenestrules and numerous rows of apertures on branches. Gipsvika, PMO 170.919. Scale bars 5 mm.
Fig. 9 in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 9. Lower Permian bryozoans from Gipsvika, Svalbard. Toulapora svalbardense (Nakrem, 1994a). A. Tangential section. Rejmyrefjellet, Artinskian, PMO A42600/1 (holotype). B. Tangential section. Rejmyrefjellet, Artinskian, PMO A42600/1 (holotype). C. Tangential section. Rejmyrefjellet, Artinskian, PMO A42600/1 (holotype). D. Longitudinal section. Cylindrical colony with now decayed ephemeral encrustation substrate ("hollow tubes"). Rejmyrefjellet, Artinskian, PMO A42600/4 (paratype). E. Longitudinal section. Rejmyrefjellet, Artinskian, PMO A42600/2 (paratype). F. Transverse section of cylindrical colony. Gipsvika, Sakmarian, PMO 170.929. G. Tangential section. Gipsvika, Sakmarian, PMO 170.929. H. Tangential section. Gipsvika, Sakmarian, PMO 170.929. I. Longitudinal section. Gipsvika, Sakmarian, PMO 170.941. Scale bars 0.4 mm.
Fig. 7. Lower Permian bryozoans from Hyrnefjellet, Svalbard. A–F in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 7. Lower Permian bryozoans from Hyrnefjellet, Svalbard. A–F. Ascopora birkenmajeri sp. nov. A. Transverse section showing completely regenerated growth (cylindrical self−encrustation). Sample H7, PMO 170.903A. B. Longitudinal section showing central canal with parallel zooecia. Regenerated growth. PMO 170.903H. C. Regenerated growth. Sample H7, PMO 170.903E. D. Sample H7, PMO 170.903C. Colony growth basis (D1) and colony growth basis displaying unusual thich endozonal walls (D2). E. Sample H7, PMO 170.903D. Regenerated growth. F. Tangential section showing zooecial apertures, large acanthostyles between apertures, and a row of small stylets bordering each aperture. Sample Br.12/G15, PMO 170.899. G, H. Timanodictya sp. G. Oblique tangential section. Sample H10, ZPAL thin section. H. Tangential section showing apertures, and scattered small (1) and large (2) tubercles on colony surface between apertures. Sample H10, ZPAL thin section. Scale bars 0.4 mm.
Figure 3 in A new polychaete genus and species of the Kongsfjorden, Spitsbergen, Svalbard
Figure 3. Glyphochaeta laudieni gen sp. n., light micrographs. (A) Sagittal section through chaetiger 14 and 15 with glandular organ in chaetiger 14 and grooved spine in chaetiger 15; (B) sagittal section through chaetiger 14 with glandular organ associated with grooved spine. Scale bars: 30 mm. coe, coelom; g, gut; gl, glandular organ; sp, grooved spine.
Permafrost in Spitsbergen, Svalbard
<p>The data used in the study of ground ice loss over permafrost in Spitsbergen, Svalbard during 2018-2020.</p>
Fig. 1 in Acanthodian fish trace fossils from the Early Devonian of Spitsbergen
Fig. 1. The structural setting of the Devonian fault graben in NW Svalbard, the distribution of the main Devonian lithostratigraphic units, and the type locality of Undichna septemsulcata isp. nov. (modified after Piepjohn and Thiedig 1997 and Harland et al. 1997).
Fig. 3 in Acanthodian fish trace fossils from the Early Devonian of Spitsbergen
Fig. 3. Idealised trackway of Undichna septemsulcata isp. nov. with the geometric properties (A1, A2, A3 = amplitudes of groove waves; w2 = width of paired grooves; w2', w3a', w3b' = apparent width of paired grooves; λ = wavelength) and the proposed trace maker: an acanthodian with bifurcated and spined pectoral fins, spined pelvic fins and a spined caudal or anal fin.
FIGURE 7 in Two Interesting Damaeid Mites (Acari, Oribatida, Damaeidae Berlese, 1896) From The British Isles And Svalbard (Spitsbergen, Norway), With A Description Of Kunstidamaeus Arcticus N.Sp.
FIGURE 7: Epidamaeus sp. (aff. floccosus Behan-Pelletier and Norton, 1985): A – femur and genu I; B – genu, tibia and tarsus I; C – femur, genu and tibia II; D – trochanter, femur and genu III; E – trochanter, femur and genu IV; F – genu, tibia and tarsus IV (scale bar = 50 µm).
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