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FIGURE 13 in The integument of pelagic crocodylomorphs (Thalattosuchia: Metriorhynchidae)
FIGURE 13. Metriorhynchidae indet., NKMB-P-Watt06/508, feet of both sides under UV. The caudal soft tissue ends slightly ventral to the hemapophyses. Minor patches of yellowish skin indication are uncertainly belonging to the webbing or metatarsal area of one of the feet (arrow). Width of frame equals approximately 35.5 cm.
FIGURE 28 in The integument of pelagic crocodylomorphs (Thalattosuchia: Metriorhynchidae)
FIGURE 28. Life reconstruction of a Dakosaurus-like metriorhynchid, illustrating the skin surface, fluke outline, and potential epizoic parasites, according to new data.
Figure 5 in Study of the integument that covering back and stinger of the freshwater stingray Potamotrygon rex (Chondricthyes, Potamotrygonidae)
Figure 5. Histochemistry of the Potamotrygon rex stingray: back (A: B: C: D; E) and stinger (F; G; H, I). (A) Micrograph showing mucous cells positive by the PAS histochemical method. (B) Image magnification showing that epithelial cells also presented positive cytoplasm to PAS, as well as the basal membrane (Bm). (C) Alcian Blue positive epithelial cells. (D) Epithelial cells positive to Bromophenol Blue, detail (Pr) Protein reserve strongly positive for Bromophenol Blue. (E) granulosa cells positive to Bromophenol Blue. (F, G, H, I) Stinger regions with all Bromophenol Blue positive cells. Ct- connective tissue; Bm- basal membrane; Mc – mucous cell; Pr- protein reserve (arrows); Mr- mineralized region; Gc – granulosa cell; Cm- chromatophores; DLR - dorsolateral region; VLR- ventrolateral region.
Figure 1 in Study of the integument that covering back and stinger of the freshwater stingray Potamotrygon rex (Chondricthyes, Potamotrygonidae)
Figure 1. Collection sites for the tissues of the back and stinger of the Potamotrygon rex stingray, numbered according to their position. (A) Back of the stingray: 1- median tail; 2- base of the tail; 3- cephalic region; 4- left lateral fin; 5- right lateral fin. (B) Stinger: 1- apex; 2-middle and 3- base. (C) Scheme showing transversal section of the stinger regions that were analyzed under light microscopy. DR- Dorsal Region, DLR- Dorsolateral Region, VLR- Ventrolateral Region.
Figure 3 in Study of the integument that covering back and stinger of the freshwater stingray Potamotrygon rex (Chondricthyes, Potamotrygonidae)
Figure 3. Photomicrograph of the back and stinger of the Potamotrygon rex's epidermis. (A) General view of the back. (C) Detail of the epithelial tissue of the back showing the layers: Sup- superficial; Int- intermediary; Bas- basal. (E) Detail of the basal layer showing the granulosa cell (arrow). (B. D and F) Different regions of the stinger and the different layers of the epithelium: Sup- superficial, Intintermediate, Bas- basal. (G) Cross section of the stinger showing the superficial (Sup) and intermediate (Int) layers, where it is possible to notice the epithelial cells of the intermediate layer. Et- epithelial tissue, Ct- connective tissue; Dd- dermal denticle; Mc- mucous cell; Gc – granulosa cell; Pr- protein reserve; Cm- chromatophores; DLR - dorsolateral region; VLR- ventrolateral region; Mr- mineralized region. (A-F) H&E stain. (G) PAS stain.
Figure 2 in Study of the integument that covering back and stinger of the freshwater stingray Potamotrygon rex (Chondricthyes, Potamotrygonidae)
Figure 2. Adult female specimen of the stingray Potamotrygon rex. (A) Dorsal view of the stingray. (B) Tail of the stingray with two stingers attached to the middle portion of the tail, in the dorsal region, where the outermost stinger (*) is larger than the innermost one.
◂Fig. 6 Gynoecial development, fruit and seedling of C. crenata %yellow frames), C. cf. grandicalyx %blue frames) and C. sinensis %pink frames; A–F light microscopy, G–K stereo microscopy of endocarp, mesocarp removed; L–O field images; TS in horizontal orientation). A, B TS of anthetic flower %note two to three abortive ovules and strongly stained, peripheral tissue). C, D TS of anthetic flower %note two to three abortive ovules and lignifying portions of prospective mesocarp). E Young fruit %note developing endocarp and flashily pink portions of the mesocarp). F TS of postanthetic flower %note three abortive ovules and lignifying portions of prospective mesocarp). G TS of endocarp, with three developed embryos removed %note scanty endosperm). H Endocarp. J TS of endocarp. K Endocarp. L Immature fruits. M Mature fruits. N Seedlings %note short hypocotyl and long petioles of cotyledons). O Seedlings %note long hypocotyl and short petioles of cotyledons; image taken from cultivated plant, accession number 2012–0005, in the Botanical Garden Munich) %LS, longisection; TS, transverse section; ao, abortive ovule; cot, cotyledon; db, dorsal bundle; c, calyx; ec, endocarp; ens, endosperm; ex, exocarp; fr, fruit; h, hypocotyl; int, integument; lb, lateral bundle; mc, mesocarp; o, ovule; pet, petiolus; sty, style; ut, peripheral tissue; vs, ventral slit) in Observations on flower and fruit anatomy in dioecious species of Cordia (Cordiaceae, Boraginales) with evolutionary interpretations
◂Fig. 6 Gynoecial development, fruit and seedling of C. crenata %yellow frames), C. cf. grandicalyx %blue frames) and C. sinensis %pink frames; A–F light microscopy, G–K stereo microscopy of endocarp, mesocarp removed; L–O field images; TS in horizontal orientation). A, B TS of anthetic flower %note two to three abortive ovules and strongly stained, peripheral tissue). C, D TS of anthetic flower %note two to three abortive ovules and lignifying portions of prospective mesocarp). E Young fruit %note developing endocarp and flashily pink portions of the mesocarp). F TS of postanthetic flower %note three abortive ovules and lignifying portions of prospective mesocarp). G TS of endocarp, with three developed embryos removed %note scanty endosperm). H Endocarp. J TS of endocarp. K Endocarp. L Immature fruits. M Mature fruits. N Seedlings %note short hypocotyl and long petioles of cotyledons). O Seedlings %note long hypocotyl and short petioles of cotyledons; image taken from cultivated plant, accession number 2012–0005, in the Botanical Garden Munich) %LS, longisection; TS, transverse section; ao, abortive ovule; cot, cotyledon; db, dorsal bundle; c, calyx; ec, endocarp; ens, endosperm; ex, exocarp; fr, fruit; h, hypocotyl; int, integument; lb, lateral bundle; mc, mesocarp; o, ovule; pet, petiolus; sty, style; ut, peripheral tissue; vs, ventral slit)
Text-fig. 11. Scanning electron microscope (SEM) images of seeds assigned to the BEG group (a–d) and associated pollen grains (e–i); Torres Vedras locality, Portugal. a) Seed of Tomcatia taylorii showing the four horns formed by extensions of the envelope and the central projection of the envelope that surrounds to the micropylar tube; b, c) Seeds of Quadrispermum parvum in lateral (b) and apical (c) views showing the transverse ribs and the central projection of the envelope that surrounds the micropylar tube; d–f) Seeds of Ephedrispermum lusitanicum showing the four-angled seed envelope (d), the micropylar tube surrounded by the tissues of the integument (e), and ephedroid pollen grains on the seed surface (f); g) Apex of seed of Quadrispermum parvum showing simple 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. 11. Scanning electron microscope (SEM) images of seeds assigned to the BEG group (a–d) and associated pollen grains (e–i); Torres Vedras locality, Portugal. a) Seed of Tomcatia taylorii showing the four horns formed by extensions of the envelope and the central projection of the envelope that surrounds to the micropylar tube; b, c) Seeds of Quadrispermum parvum in lateral (b) and apical (c) views showing the transverse ribs and the central projection of the envelope that surrounds the micropylar tube; d–f) Seeds of Ephedrispermum lusitanicum showing the four-angled seed envelope (d), the micropylar tube surrounded by the tissues of the integument (e), and ephedroid pollen grains on the seed surface (f); g) Apex of seed of Quadrispermum parvum showing simple
Text-fig. 1. Gastonispermum portugallicum gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). Note remains of mounting media on several seeds (¤). a) Seed in oblique view showing seed shape, the slightly raised raphal ridge and the position of hilum (hi) and micropyle (mi) on the raphal side of the seed (S170218). b, c) Seeds in lateral view (b, S170234; c, S175095). d–f) Holotype (S174820); seed in lateral view (d) and cut volume rendering (e, f) through the median plane of the seed showing palisade-shaped sclerenchyma cells of exotesta and remains of embryo (emb) and surrounding nutritive tissue (e, cut between yz0440-0530; f, cut between slices yz440-480). g) Hilum (hi) and micropyle (mi) of seed in (1a) showing the Y-shaped micropylar slit in the outer integument. h) Cut volume rendering through the median plane of the seed (cut at yz0492) showing seed coat mainly composed of palisade-shaped cells of the exotesta (S174435). i) Seed surface showing the raised outlines of the undulate anticlinal walls of the exotestal cells (S175045). Scale bars = 500 µm (a–e); 250 µm (g); 125 µm (f, i). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal
Text-fig. 1. Gastonispermum portugallicum gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). Note remains of mounting media on several seeds (¤). a) Seed in oblique view showing seed shape, the slightly raised raphal ridge and the position of hilum (hi) and micropyle (mi) on the raphal side of the seed (S170218). b, c) Seeds in lateral view (b, S170234; c, S175095). d–f) Holotype (S174820); seed in lateral view (d) and cut volume rendering (e, f) through the median plane of the seed showing palisade-shaped sclerenchyma cells of exotesta and remains of embryo (emb) and surrounding nutritive tissue (e, cut between yz0440-0530; f, cut between slices yz440-480). g) Hilum (hi) and micropyle (mi) of seed in (1a) showing the Y-shaped micropylar slit in the outer integument. h) Cut volume rendering through the median plane of the seed (cut at yz0492) showing seed coat mainly composed of palisade-shaped cells of the exotesta (S174435). i) Seed surface showing the raised outlines of the undulate anticlinal walls of the exotestal cells (S175045). Scale bars = 500 µm (a–e); 250 µm (g); 125 µm (f, i).
Text-fig. 7. Lusitanispermum choffatii gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype; seed in lateral view showing seed shape; note that the seed is broken near the lower surface of the hilum (S174345). b) Oblique apical view of micropylar-hilar region of holotype showing slightly ruptured micropylar slit (mi) in the outer integument and two bulging and abraded areas (arrow heads) close to hilum. c) Seed in oblique lateral-raphal view showing the two bulging structures (arrow heads) immediately adjacent to the lower edge of the hilum (S174472). d) Tangential, longitudinal cut (cut at yz0131) through the seed coat of seed in (7c) showing the undulate anticlinal cell walls of the exotesta cells that are thickest towards the outside and thinner towards the inside. Scale bars = 500 µm (a–c); 250 µm (d). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal
Text-fig. 7. Lusitanispermum choffatii gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype; seed in lateral view showing seed shape; note that the seed is broken near the lower surface of the hilum (S174345). b) Oblique apical view of micropylar-hilar region of holotype showing slightly ruptured micropylar slit (mi) in the outer integument and two bulging and abraded areas (arrow heads) close to hilum. c) Seed in oblique lateral-raphal view showing the two bulging structures (arrow heads) immediately adjacent to the lower edge of the hilum (S174472). d) Tangential, longitudinal cut (cut at yz0131) through the seed coat of seed in (7c) showing the undulate anticlinal cell walls of the exotesta cells that are thickest towards the outside and thinner towards the inside. Scale bars = 500 µm (a–c); 250 µm (d).
Text-fig. 50. Scanning electron microscope (SEM, a, b) and synchrotron radiation X-ray tomographic microscopy (SRXTM, c–f) images of "Foveolate seed sp. 2"; Catefica locality, Portugal. a, b) Lateral (a) and apical (b) views of seed showing the coarsely foveolate surface; note the truncate apex and the slightly depressed hilar-micropylar region; c) Longitudinal section (volume rendering cut between orthoslices xz0740 and xz0840) through the middle of seed showing the truncate apex with slightly depressed hilar-micropylar region and basal rounded chalazal region; note thick outer integument (oi) composed of an exotesta of thickwalled palisade-like cells and a thin inner integument (ii); d, e, f) Transverse (d, orthoslice xy0800) and longitudinal sections (e, orthoslice xz1100, f, orthoslice yz0800) through seed hilar-micropylar region, showing the exotesta comprised of the thick-walled palisade-like cells of the outer integument (oi), small, thin-walled meso- endotestal cells of the outer integument (arrows) and thin inner integument (ii). Specimen, Catefica 153-S172332 (a–f). Scale bars = 300 Μm (a–f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 50. Scanning electron microscope (SEM, a, b) and synchrotron radiation X-ray tomographic microscopy (SRXTM, c–f) images of "Foveolate seed sp. 2"; Catefica locality, Portugal. a, b) Lateral (a) and apical (b) views of seed showing the coarsely foveolate surface; note the truncate apex and the slightly depressed hilar-micropylar region; c) Longitudinal section (volume rendering cut between orthoslices xz0740 and xz0840) through the middle of seed showing the truncate apex with slightly depressed hilar-micropylar region and basal rounded chalazal region; note thick outer integument (oi) composed of an exotesta of thickwalled palisade-like cells and a thin inner integument (ii); d, e, f) Transverse (d, orthoslice xy0800) and longitudinal sections (e, orthoslice xz1100, f, orthoslice yz0800) through seed hilar-micropylar region, showing the exotesta comprised of the thick-walled palisade-like cells of the outer integument (oi), small, thin-walled meso- endotestal cells of the outer integument (arrows) and thin inner integument (ii). Specimen, Catefica 153-S172332 (a–f). Scale bars = 300 Μm (a–f).
Text-fig. 49. Scanning electron microscope (SEM, a, b) and synchrotron radiation X-ray tomographic microscopy (SRXTM, c–e) images of "Foveolate seed sp. 1"; Catefica locality, Portugal. a) Lateral view of seed showing foveolate surface; note the slightly pointed hilar-micropylar region with the preservation of a presumed secretion (arrow) from the micropyle; b) Detail of seed surface showing shallow pitting and very faint outlines of the undulate anticlinal walls of the exotestal cells; c) Longitudinal section (volume rendering cut between orthoslices yz0450 and yz0460) through the middle of the seed showing the slightly pointed hilarmicropylar region and the rounded chalazal region; note the thick exotesta of the outer integument composed of thick-walled palisade-like cells (oi); note partial preservation of large cells of the nutritive tissue (nu) and the smaller cells of the embryo (em) at the micropylar end of the seed; d, e) Longitudinal sections (d, orthoslice xz0750, e, orthoslice yz0485) through middle of the seed perpendicular to each other showing the hilar-micropylar region with the preservation of a presumed secretion from micropyle (e, arrow), thick palisade-like cells of outer integument (oi), larger cells of the nutritive tissue (nu) and remains of the smaller cells of the embryo (em). Specimen, Catefica 49-S172316 (a–e). Scale bars = 300 Μm (a, c–e), 50 Μm (b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 49. Scanning electron microscope (SEM, a, b) and synchrotron radiation X-ray tomographic microscopy (SRXTM, c–e) images of "Foveolate seed sp. 1"; Catefica locality, Portugal. a) Lateral view of seed showing foveolate surface; note the slightly pointed hilar-micropylar region with the preservation of a presumed secretion (arrow) from the micropyle; b) Detail of seed surface showing shallow pitting and very faint outlines of the undulate anticlinal walls of the exotestal cells; c) Longitudinal section (volume rendering cut between orthoslices yz0450 and yz0460) through the middle of the seed showing the slightly pointed hilarmicropylar region and the rounded chalazal region; note the thick exotesta of the outer integument composed of thick-walled palisade-like cells (oi); note partial preservation of large cells of the nutritive tissue (nu) and the smaller cells of the embryo (em) at the micropylar end of the seed; d, e) Longitudinal sections (d, orthoslice xz0750, e, orthoslice yz0485) through middle of the seed perpendicular to each other showing the hilar-micropylar region with the preservation of a presumed secretion from micropyle (e, arrow), thick palisade-like cells of outer integument (oi), larger cells of the nutritive tissue (nu) and remains of the smaller cells of the embryo (em). Specimen, Catefica 49-S172316 (a–e). Scale bars = 300 Μm (a, c–e), 50 Μm (b).
Text-fig. 47. Synchrotron radiation X-ray tomographic microscopy (SRXTM) images of "One-seeded fruit sp. 1"; Catefica locality, Portugal. a, b) Lateral view of fruits showing slightly sinuous ventral margin and the curved stalk; c, d) Longitudinal sections perpendicular to each other through the median part of fruit and its single seed (c, orthoslice yz0652, d, xz0739) showing the bitegmic seed closely adhering to the fruit wall (fw); the several cell layer thick outer integument (oi) and the membranous inner integument (ii); note the vascular bundle (vb) branching into a dorsal and lateral bundle near the base of the fruit; e) Transverse section (orthoslice xy0600) showing fruit wall (fw) and outer (oi) and inner (ii) integuments of the seed; f) Longitudinal section (orthoslice yz0871) through the micropylar region showing micropyle (mi) formed from membranous inner integument (ii). Specimens, Catefica 49-S174927 (a), Catefica 49-S174923 (b, f), Catefica 49-S174769 (c–e). Scale bars = 300 Μm (a–d), 100 Μm (e, f). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 47. Synchrotron radiation X-ray tomographic microscopy (SRXTM) images of "One-seeded fruit sp. 1"; Catefica locality, Portugal. a, b) Lateral view of fruits showing slightly sinuous ventral margin and the curved stalk; c, d) Longitudinal sections perpendicular to each other through the median part of fruit and its single seed (c, orthoslice yz0652, d, xz0739) showing the bitegmic seed closely adhering to the fruit wall (fw); the several cell layer thick outer integument (oi) and the membranous inner integument (ii); note the vascular bundle (vb) branching into a dorsal and lateral bundle near the base of the fruit; e) Transverse section (orthoslice xy0600) showing fruit wall (fw) and outer (oi) and inner (ii) integuments of the seed; f) Longitudinal section (orthoslice yz0871) through the micropylar region showing micropyle (mi) formed from membranous inner integument (ii). Specimens, Catefica 49-S174927 (a), Catefica 49-S174923 (b, f), Catefica 49-S174769 (c–e). Scale bars = 300 Μm (a–d), 100 Μm (e, f).
Text-fig. 3. Synchrotron radiation X-ray tomographic microscopy (SRXTM) images of fruits of Canrightia foveolata sp. nov.; Catefica locality, Portugal. a) Volume rendering of fruit showing prominent rim around the middle of the fruit with reduced tepals (arrowheads) and partly abraded fruit wall exposing the pitted endotesta surface of one of two seeds (arrow); note two of the vascular bundles (vb) extending from the base of the fruit to the tepals; b) Voltex of fruit showing prominent rim around the fruit (arrowhead) and dense precipitation of crystals in the endothelium cells of one of the two seeds in the fruit; c) Longitudinal section of fruit (orthoslice yz0520) showing the inferred hypanthium rim (arrow head) and two seeds, one with a dense precipitation of crystals; note the prominent endothelium cells (asterisks) of the inner integument and the well-developed fruit wall above the seeds; d) Transverse section through basal part of fruit and seeds close to the micropyle (orthoslice xy0312) showing partly abraded fruit wall with five vascular bundles (vb) and details of the seed coat with endotesta (oi-end) surrounding the tegmen consisting of an outer epidermis (ii-o), middle layer (ii-m) and a distinct inner epidermis (endothelium) consisting of radially elongated cells (asterisk); e) Transverse section (orthoslice xy1680) through apical part of the fruit close to chalaza showing the tips of two seeds; note the endotesta (oi-end) surrounded by thick-walled cells of the exotesta (oi-o); f) Transverse section (orthoslice xy1485) through fruit in the region of the hypanthium rim showing sections through the two seeds close to the chalazal region; note endotesta (oi-end) surrounded by larger cells of exotesta (oi-o) and fruit wall (fr). Specimen, Catefica 49-S174249 (holotype, a–f). Scale bars = 300 Μm (a–c, e, f), 100 Μm (d). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 3. Synchrotron radiation X-ray tomographic microscopy (SRXTM) images of fruits of Canrightia foveolata sp. nov.; Catefica locality, Portugal. a) Volume rendering of fruit showing prominent rim around the middle of the fruit with reduced tepals (arrowheads) and partly abraded fruit wall exposing the pitted endotesta surface of one of two seeds (arrow); note two of the vascular bundles (vb) extending from the base of the fruit to the tepals; b) Voltex of fruit showing prominent rim around the fruit (arrowhead) and dense precipitation of crystals in the endothelium cells of one of the two seeds in the fruit; c) Longitudinal section of fruit (orthoslice yz0520) showing the inferred hypanthium rim (arrow head) and two seeds, one with a dense precipitation of crystals; note the prominent endothelium cells (asterisks) of the inner integument and the well-developed fruit wall above the seeds; d) Transverse section through basal part of fruit and seeds close to the micropyle (orthoslice xy0312) showing partly abraded fruit wall with five vascular bundles (vb) and details of the seed coat with endotesta (oi-end) surrounding the tegmen consisting of an outer epidermis (ii-o), middle layer (ii-m) and a distinct inner epidermis (endothelium) consisting of radially elongated cells (asterisk); e) Transverse section (orthoslice xy1680) through apical part of the fruit close to chalaza showing the tips of two seeds; note the endotesta (oi-end) surrounded by thick-walled cells of the exotesta (oi-o); f) Transverse section (orthoslice xy1485) through fruit in the region of the hypanthium rim showing sections through the two seeds close to the chalazal region; note endotesta (oi-end) surrounded by larger cells of exotesta (oi-o) and fruit wall (fr). Specimen, Catefica 49-S174249 (holotype, a–f). Scale bars = 300 Μm (a–c, e, f), 100 Μm (d).
Text-fig. 19. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a–c) of Aristospermum huberi and scanning electron microscope (SEM, d, e) images of Choffaticarpus compactus; Catefica locality, Portugal. a) Volume rendering of strongly flattened, triangular seed with pointed micropylar region; note thin-walled cells of outer integument preserved along the margins of the seed and pitted surface of the crystalliferous inner cells of outer integument where the outer cells are abraded and the narrow, lateral funicle/raphe; b) Volume rendering of seed showing surface of inner integument (endotesta) with cells showing clear imprints of crystals (arrows); c) Longitudinal section (orthoslice yz0241) of seed showing crystalliferous cells of endotesta (white arrows) and the two fiber layers of the tegmen that are perpendicular to each other (inner integument, ii-f, black arrows); d) Fragment of multiparted, apocarpous fruiting structure showing several helically-arranged, laterally flattened, fruitlets; e) Fruitlet in lateral view showing the prominent ventral face with its lateral groove, short attachment scar, and sunken regions of the fruit wall that indicate the probable presence of oil cells. Specimens, Catefica 49-S266049 (a–c), Catefica 49-S172558 (d), Catefica 49-S118675 (e). Scale bars = 300 Μm (a, c–e), 100 Μm (b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 19. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a–c) of Aristospermum huberi and scanning electron microscope (SEM, d, e) images of Choffaticarpus compactus; Catefica locality, Portugal. a) Volume rendering of strongly flattened, triangular seed with pointed micropylar region; note thin-walled cells of outer integument preserved along the margins of the seed and pitted surface of the crystalliferous inner cells of outer integument where the outer cells are abraded and the narrow, lateral funicle/raphe; b) Volume rendering of seed showing surface of inner integument (endotesta) with cells showing clear imprints of crystals (arrows); c) Longitudinal section (orthoslice yz0241) of seed showing crystalliferous cells of endotesta (white arrows) and the two fiber layers of the tegmen that are perpendicular to each other (inner integument, ii-f, black arrows); d) Fragment of multiparted, apocarpous fruiting structure showing several helically-arranged, laterally flattened, fruitlets; e) Fruitlet in lateral view showing the prominent ventral face with its lateral groove, short attachment scar, and sunken regions of the fruit wall that indicate the probable presence of oil cells. Specimens, Catefica 49-S266049 (a–c), Catefica 49-S172558 (d), Catefica 49-S118675 (e). Scale bars = 300 Μm (a, c–e), 100 Μm (b).
Trial of PDE4 Inhibition With Roflumilast for the Management of Atopic Dermatitis (INTEGUMENT-II)
ClinicalTrials.gov study NCT04773600. IPD Sharing: Not stated. Countries: 2. Publications: 1.
Trial of PDE4 Inhibition With Roflumilast for the Management of Atopic Dermatitis (Integument-PED)
ClinicalTrials.gov study NCT04845620. IPD Sharing: Not stated. Countries: 2. Publications: 1.
Data from: Exceptional preservation and the fossil record of tetrapod integument
The fossil record of exceptionally preserved soft tissues in Konservat-Lagerstätten provides rare yet significant insight into past behaviours and ecologies. Such deposits are known to occur in bursts rather than evenly through time, but reasons for this pattern and implications for the origins of novel structures remain unclear. Previous assessments of these records focused on marine environments preserving chemically heterogeneous tissues from across animals. Here, we investigate the preservation of skin and keratinous integumentary structures in land-dwelling vertebrates (tetrapods) through time, and in distinct terrestrial and marine depositional environments. We also evaluate previously proposed biotic and abiotic controls on the distribution of 143 tetrapod Konservat-Lagerstätten from the Permian to the Pleistocene in a multivariate framework. Gap analyses taking into account sampling intensity and distribution indicate that feathers probably evolved close to their first appearance in the fossil record. By contrast, hair and archosaur filaments are weakly sampled (five times less common than feathers), and their origins may significantly pre-date earliest known occurrences in the fossil record. This work suggests that among-integument variation in preservation can bias the reconstructed first origins of integumentary novelties and has implications for predicting where, and in what depositional environments, to expect further discoveries of exquisitely preserved tetrapod integument.
dorsal side of d. f – h, XX 34 - 298. f, Close-up of closed mouth with radial folds and oral protrusions in Fig. 2 f. g, Two sub-layers of the integument on the second, right body cone (Rbc 2) with radial ribs in Fig. 2 g. h, Chevron pattern on integument surface. in Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China)
dorsal side of d. f – h, XX 34 - 298. f, Close-up of closed mouth with radial folds and oral protrusions in Fig. 2 f. g, Two sub-layers of the integument on the second, right body cone (Rbc 2) with radial ribs in Fig. 2 g. h, Chevron pattern on integument surface.
Data from: Exceptional preservation and the fossil record of tetrapod integument
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.