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72 results for “Soft tissue preservation”
Fig. 9 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 9. SEM photographs of phosphatized endolithic community of bryozoans and "fungi" (morphotype A) from the Early Devonian of Doroshiv section, Podolia, Ukraine. A. ZPAL Br XIV/067. Fragmentary colony showing a network of irregularly branched filaments and rare bryozoan zooids (A1). Oblique view showing partly preserved bryozoans autozooids and 'fungal' hyphae (A2). Oblique view showing fungal attack on supposed juvenile bryozoan autozooid (A3). Close−up showing "fungal" filaments with branches and irregularly shaped swellings, note imprints of host shell microstructure preserved on the coating layer (A4). B. ZPAL Br XIV/101. Pattern of fungal filaments and bryozoans zooids (B1). Close−up of partly preserved bryozoan zooids attached by "fungal" hyphae (B2). Oblique view showing partly preserved autozooid with accessory tubules visible, attacked by fungal branches (B3). Close−up of autozooid attacking by "fungal" branching (B4). Oblique view of "fungal" colony (B5). Close−up of irregularly shaped "fungal" swellings showing hollow interiors, note the host shell microstructure imprints preserved on the coating layer (B6, B7).
Fig. 8 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 8. Early Devonian bryozoan Podoliapora doroshivi gen. et sp. nov., from the Doroshiv section, Podolia, Ukraine. A. ZPAL Br XIV/009. Lateral view of cylindrical−shaped heterozooid cavity, basal wall collapsed (A1). Close−up showing external coating layer and internal lamellae, basal wall collapsed (A2). B. ZPAL Br XIV/011. Oblique view of the partly preserved colony showing cylindrical heterozooids, basal wall collapsed. C. ZPAL Br XIV/112; Lateral view showing autozooids and ovate−shaped heterozooids (C1), lateral views of heterozooids showing layers infilling the interior of the cavity, visible in places where the coating layer has not been preserved (C2, C3), basal walls collapsed. D. ZPAL Br XIV/071. Fragmentary preserved colony in oblique view showing heterozooid cavity with basal wall preserved. E. ZPAL Br XIV/137. Oblique view of cylindrical heterozooid with basal wall collapsed (E1), close−up showing host shell microstructure preserved on the surface of the coating layer (E2).
Fig. 7 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 7. Early Devonian bryozoan Podoliapora doroshivi gen. et sp. nov., from the Doroshiv section, Podolia, Ukraine. SEM photographs of zooids coated by micro−fibrils of host shell microstructure. A. ZPAL Br XIV/008. Basal view of partly preserved autozooid, cylindrical−heterozooid and "stolons" (A1). Lateral view of proximal part of autozooid showing partly preserved main tunnel−like stolon (A2). B. ZPAL Br XIV/009. Lateral view of side wall of autozooid (B1). Partly preserved autozooid with accessory tubules and internal view showing cuticle layer preserved inside the zooid and external coated layer with imprint of host shell microstructure (B2). Obliquely internal view of autozooid (vestibular part not preserved) showing cuticle with folds of longitudinal parietal muscles preserved (B3). Internal view of autozooid showing folds of circular and longitudinal muscles (B4).
Fig. 4 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 4. Early Devonian bryozoan Podoliapora doroshivi gen. et sp. nov., from the Doroshiv section, Podolia, Ukraine. SEM photographs showing phosphatized soft−tissue preserved inside autozooids. ZPAL Br XIV/009. A. Internal view (A1) showing wrinkling frontal (arrow) and lateral cystid walls, setigerous collar twisted within the vestibulum, entrance of the main stolon into the autozood is preserved below the vestibulum, secondary−order "stolons" partly preserved in both sides of the autozooid, oblique lateral view (A2) showing accessory tubules and imprints of the host shell microstructure preserved on the surface of the coating layer. B. Internal view of autozooid (B1) and close−up showing longitudinal parietal muscles and irregular shape of autozooids occurring in dense colonies (B2). C. Internal view showing setigerous collar twisted within vestibulum.
Fig. 2 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 2. Early Devonian bryozoan Podoliapora doroshivi gen. et sp. nov., from the Doroshiv section, Podolia, Ukraine. A. Lateral view of a single autozooid showing external morphological features, ZPAL Br XIV/102. B. Reconstruction in transverse section. C. Reconstruction in longitudinal section.
Fig. 1 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 1. Location map of the studied section, Lower Devonian, middle Lochkovian, Chortkiv Formation in Doroshiv, Podolia Ukraine. A. Map of Ukraine showing location of the study area; rectangle indicates general locality, enlarged in B and C. B. Distribution of the Silurian and Devonian deposits in Podolia, SW Ukraine; 1, Eastern extent of the Silurian deposits; 2, Eastern extent of the Devonian deposits; 3, Eastern extent of the Old Red Sandstone−type deposits; 4, Trans European Suture Zone. C. Location of the Doroshiv outcrop in the vicinity of Dniestr valley. Modified from Małkowski et al. (2009).
Fig. 10 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 10. SEM photographs of phosphatized endolithic community of bryozoans and "fungi" (morphotype B) from the Early Devonian of Doroshiv section, Podolia, Ukraine. ZPAL Br XIV/154. A. Fragmentary preserved colony in basal view. B. Oblique view showing filaments with perpendicular branches. C. Close−up of branching filaments. D–F. Side views of bryozoan autozooid perforated by endolithic "fungal" hyphae.
Fig. 3 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 3. Early Devonian bryozoan Podoliapora doroshivi gen. et sp. nov., from the Doroshiv section, Podolia, Ukraine. Stereo−pairs of phosphatized colonies in basal view; frontal parts of the colonies and orifices are not visible as they opened onto the surface of the host shell. A–C. Internal views of partly preserved zooids with basal walls collapsed, soft−tissue preserved inside autozooids, and orifices visible at the distal ends of autozooids. A. ZPAL Br XIV/008. B. ZPAL Br XIV/009. C. ZPAL Br XIV/015. D–F. Basal views of the colonies with zooid completely preserved. D. ZPAL Br XIV/002. E. ZPAL Br XIV/155. F. ZPAL Br XIV/157.
Fig. 6 in Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated "fungal" borings from the Early Devonian of Podolia, Ukraine
Fig. 6. Early Devonian bryozoan Podoliapora doroshivi gen. et sp. nov., from the Doroshiv section, Podolia, Ukraine. SEM photographs showing imprints of the molluscan host shell microstructures preserved on the surface of the coating layer (internal mould of the interstitial space). A. Basal part of the autozooid specimen, ZPAL Br XIV/155. B. Oblique lateral view showing the coating layer with host shell microstructure preserved; the external surface of cuticle is visible only in places where the coating layer have been damaged; arrow shows poorly visible micro−pore on the surface of cuticle, ZPAL Br XIV/002. H
Fig. 4 in Preservation of soft tissues in an Ordovician linguloid brachiopod from China
Fig. 4. Pedicle of the Early Ordovician and Recent linguloid brachiopods. A. The most complete specimen of Leontiella sp. from the lower Ordovician Fenxiang Formation of Hubei Province, China (PKUM02−0614a); general view showing partially preserved shell (in upper right of the photograph) and pyritized vermiform pedicle (A1) and more detailed view (A2). B. External morphology of the pedicle of extant Lingula anatina Lamarck, 1801, locality unknown (ZPAL Bp 70/6) (compare with A2). C, D. Two enlargements of pedicle from Fenxiang Formation, Hubei Province, China; PKUM02−0614b (C) and PKUM02−0615 (D). Note the surface fine transverse annuli and wider transverse wrinkles, as well as short longitudinal ridges well preserved in D. A slight damage in the upper part of D (arrowed) shows some thickness of the preserved pedicle. E. Fragment of pedicle with well preserved external morphology from Fenxiang Formation, Hubei Province, China (PKUM02−0616); a damage shows three−dimensional aspect of the preserved pedicle.
Fig. 1 in Preservation of soft tissues in an Ordovician linguloid brachiopod from China
Fig. 1. Geographic and stratigraphic location of the Ordovician linguloid fauna. A. Geological sketch map of Yichang area, Hubei Province, China, showing locality of the Tianjialing section. B. Position of the bed from which the present material was collected (arrow head) in the Fenxiang Formation rock column at the Tianjialing section (after Baliński et al. 2012, modified).
Fig. 3 in Preservation of soft tissues in an Ordovician linguloid brachiopod from China
Fig. 3. Linguloid Leontiella sp. from the Early Ordovician Fenxiang Formation of Hubei Province, China. A. Incomplete ventral interior showing pseudointerarea and pedicle groove (ZPAL Bp 70/1). B. Incomplete dorsal internal mould showing median ridge (ZPAL Bp 70/2). C. Fragment of ventral valve showing left pseudointerarea and partly preserved pedicle groove (ZPAL Bp 70/3). D. External surface ornament (ZPAL Bp 70/4). C, D, SEM micrographs.
Fig. 3 in Soft-tissue preservation in the Lower Cambrian linguloid brachiopod from South China
Fig. 3. Plots of maximum length (Ll)/maximum width (Wl) between the paired brachia of Lingulellotreta malongensis based on ElI collection from the Early Cambrian Chengjiang fauna at Haikou, Kunming, South China. See Fig. 5 for location of measurement.
Fig. 2 in Soft-tissue preservation in the Lower Cambrian linguloid brachiopod from South China
Fig. 2. Interpretative drawings of the interiors of Lingulellotreta malongensis shown in Fig. 1. A. Sketch of Fig. 1A. B. Sketch of Fig. 1C. C. Sketch of Fig. 1G. Scale bars 1 mm.
Data from: A Silurian ophiuroid with soft tissue preservation
<p>Palaeozoic brittle stars are not equipped with the fused arm ossicles (vertebrae) that facilitate the remarkable mode of walking that characterizes living forms. Here we describe a stem ophiuroid from the Herefordshire Lagerstätte (Silurian, Wenlock Series) which is remarkable in preserving the body cavity uncompacted and long tube feet which lack suckers. We tentatively assign the specimen to Protaster. The morphology of the arms and attitude of the specimen suggest that locomotion was achieved by arm propulsion combined with podial walking. The ophiuroid was also capable of different types of feeding strategies. This protasterid ophiuroid increases the diversity of echinoderm higher taxa with preserved soft parts represented in the Herefordshire Lagerstätte.</p>
Preservational modes of some ichthyosaur soft tissues (Reptilia, Ichthyopterygia) from the Jurassic Posidonia Shale of Germany
<p><em><span>Konservat-Lagerstätten</span></em><span>, such as the Toarcian (Early Jurassic) Posidonia Shale of southwestern Germany, are renowned for their spectacular fossils. Ichthyosaur skeletons recovered from this formation are frequently associated with soft-tissues; however, the preserved material ranges from three-dimensional, predominantly phosphatized structures to dark films of mainly organic matter. We examined soft-tissue residues obtained from two ichthyosaur specimens using an integrated ultrastructural and geochemical approach. Our analyses revealed that the superficially-looking 'films' in fact comprise sections of densely aggregated melanosome (pigment) organelles sandwiched between phosphatized layers containing fibrous microstructures. We interpret this distinct layering as representing condensed and incompletely degraded integument from both sides of the animal. When compared against previously documented ichthyosaur fossils, it becomes readily apparent that a range</span> <span>of preservational modes exists between presumed 'phosphatic' and 'carbonized' soft-tissue remains. Some specimens show high structural fidelity (e.g., distinct integumentary layering), while others, including the fossils examined in this study, retain few original anatomical details. This diversity of soft-tissue preservational modes among Posidonia Shale ichthyosaurs offers a unique opportunity to examine different biostratinomic, taphonomic, and diagenetic variables that potentially could affect the process of fossilization. Soft-tissue preservation in the Posidonia Shale likely was regulated by a multitude of factors, including decay efficacy and speed of phosphatic mineral nucleation; these in turn were governed by a seafloor with sustained microbial mat activity fuelled by high organic matter input and seasonally fluctuating oxygen levels. </span></p>
Changes of Soft and Hard Tissues After Alveolar Ridge Preservation: Freeze-dried Bone Allograft vs. L-PRF Clot
ClinicalTrials.gov study NCT03331185. IPD Sharing: NO. Countries: 1. Publications: 9.
Preservational modes of some ichthyosaur soft tissues (Reptilia, Ichthyopterygia) from the Jurassic Posidonia Shale of Germany
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Data from: A Silurian ophiuroid with soft tissue preservation
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Fig. 4. Cellular features associated with T in Soft-Tissue Vessels and Cellular Preservation in Tyrannosaurus rex
Fig. 4. Cellular features associated with T. rex and ostrich tissues. (A) Fragment of demin eralized cortical bone from T. rex, showing parallel-oriented fibers and cell-like microstruc tures among the fibers. The inset is a higher magnification of one of the microstructures seen embedded in the fibrous material. (B) Demin eralized and stained (3) ostrich cortical bone, showing fibrillar, parallel- oriented collagen matrix with osteocytes embed ded among the fibers. The inset shows a high er magnification of one of the osteocytes. Both inset views show elon gate bodies with multi ple projections arising from the external sur face consistent with filipodia. (C) Isolated microstructure from T. rex after fixation. In addition to the multiple filipodial-like projections, internal contents can be seen. The inset shows a second structure with long filipodia and an internal transparent nucleus-like structure. (D) Fixed ostrich osteocyte; inset, ostrich osteocyte fixed and stained for better visualization. Internal contents are discernible, and filipodia can be seen extending in multiple planes from the cell surface. (E and F) SEM images of aldehyde-fixed (3) microstructures isolated from T. rex cortical bone tissues. Scale bars in (A) and (B), 50 um; in (C) and (D), 20 um; in (E), 10 um; in (F), 1 um.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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