Find research datasets worth reusing

Text-fig. 21. Scanning electron microscope (SEM) images of stamens (a–c) with in situ trichotomocolpate Asteropollis type pollen (d– h); Torres Vedras locality, Portugal. a) Fragmentary tetrasporangiate stamen; b) Group of tetrasporangiate stamens; c) Single pollen sac from stamen; d, f) Distal view of pollen grains showing trichotomocolpate aperture; e, g) Pollen wall showing dense reticulum with faint supratectal ornamentation; h) Detail of pollen wall showing numerous long columellae. Specimens, TV44-S105012 (a, d), TV44-105015 (b, e), TV44-S136763 (c, f, g), TV44- S136669 (h). Scale bars 300 Μm (a–c), 6 Μm (d, f), 1.5 Μm (e, g, h). 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. 21. Scanning electron microscope (SEM) images of stamens (a–c) with in situ trichotomocolpate Asteropollis type pollen (d– h); Torres Vedras locality, Portugal. a) Fragmentary tetrasporangiate stamen; b) Group of tetrasporangiate stamens; c) Single pollen sac from stamen; d, f) Distal view of pollen grains showing trichotomocolpate aperture; e, g) Pollen wall showing dense reticulum with faint supratectal ornamentation; h) Detail of pollen wall showing numerous long columellae. Specimens, TV44-S105012 (a, d), TV44-105015 (b, e), TV44-S136763 (c, f, g), TV44- S136669 (h). Scale bars 300 Μm (a–c), 6 Μm (d, f), 1.5 Μm (e, g, h).

Text-fig. 23. Scanning electron microscope (SEM) images of Clavatipollenites sp. 2 (a–c) from a fragmentary stamen, and stamen fragments with in situ pollen of Clavatipollenites sp. 3 (d–j); Torres Vedras locality, Portugal. a, b) Distal (a) and proximal (b) view of pollen showing simple, elongate colpus on distal surface and semitectate-reticulate pollen wall; c) Detail of pollen wall showing muri with finely verrucate supratectal ornamentation and long scattered columellae; d) Fragment of tetrasporangiate stamen; e, f) Distal views of pollen from stamen fragment showing poorly defined aperture, coarse reticulum and long scattered columellae; g) Fragment of stamen; h) Distal view of pollen showing poorly defined aperture covered by irregular verrucae; i, j) Pollen wall showing rounded orbicules (i) and fractured pollen wall showing long scattered columellae (j). Specimens, TV43-S136728 (a–c), TV44-S149201 (d–f), TV44-S149220 (g–j). Scale bars 300 Μm (d, g), 6 Μm (a, b, e, f, h), 3 Μm (c), 1.5 Μm (i, j). 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. 23. Scanning electron microscope (SEM) images of Clavatipollenites sp. 2 (a–c) from a fragmentary stamen, and stamen fragments with in situ pollen of Clavatipollenites sp. 3 (d–j); Torres Vedras locality, Portugal. a, b) Distal (a) and proximal (b) view of pollen showing simple, elongate colpus on distal surface and semitectate-reticulate pollen wall; c) Detail of pollen wall showing muri with finely verrucate supratectal ornamentation and long scattered columellae; d) Fragment of tetrasporangiate stamen; e, f) Distal views of pollen from stamen fragment showing poorly defined aperture, coarse reticulum and long scattered columellae; g) Fragment of stamen; h) Distal view of pollen showing poorly defined aperture covered by irregular verrucae; i, j) Pollen wall showing rounded orbicules (i) and fractured pollen wall showing long scattered columellae (j). Specimens, TV43-S136728 (a–c), TV44-S149201 (d–f), TV44-S149220 (g–j). Scale bars 300 Μm (d, g), 6 Μm (a, b, e, f, h), 3 Μm (c), 1.5 Μm (i, j).

Text-fig. 18. Scanning electron microscope (SEM) images of a fruit of Canrightia sp. with associated pollen; Torres Vedras locality, Portugal. a) Fruit in lateral view showing prominent cavities in the fruit wall formed by the scattered oil bodies and the broad hypanthium fused to the base of the fruit (arrowhead); b) Fruit surface showing epidermal cells and the scattered oil cells embedded in the fruit wall (arrowheads); c) Cluster of monocolpate pollen grains in the probable stigmatic region of the fruit; d) Pollen grains showing the long colpus and semitectate-reticulate pollen wall; e) Pollen wall showing the reticulum with large and small lumina, and scattered, compressed columellae supporting the smooth muri. Specimen, TV142-S170213. Scale bars 300 Μm (a), 100 Μm (b), 30 Μm (c), 6 Μm (d), 1 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. 18. Scanning electron microscope (SEM) images of a fruit of Canrightia sp. with associated pollen; Torres Vedras locality, Portugal. a) Fruit in lateral view showing prominent cavities in the fruit wall formed by the scattered oil bodies and the broad hypanthium fused to the base of the fruit (arrowhead); b) Fruit surface showing epidermal cells and the scattered oil cells embedded in the fruit wall (arrowheads); c) Cluster of monocolpate pollen grains in the probable stigmatic region of the fruit; d) Pollen grains showing the long colpus and semitectate-reticulate pollen wall; e) Pollen wall showing the reticulum with large and small lumina, and scattered, compressed columellae supporting the smooth muri. Specimen, TV142-S170213. Scale bars 300 Μm (a), 100 Μm (b), 30 Μm (c), 6 Μm (d), 1 Μm (e).

Text-fig. 13. Scanning electron microscope (SEM) images of pollen or spore clump with pollen grains or spores of unknown affinity that occur separately or adhering together in dyads, triads and tetrads; Torres Vedras locality, Portugal. a) Clump of pollen or spores that yielded the pollen or spores in this Text-figure; b–f) Grains adhering together in twos, threes or fours (b–e) or occurring singly and apparently with a proximal trilete mark (f); note that the adhering grains are connected by a smooth bandlike covering, perhaps remains of the microspore mother cell; note also abundant orbicules of various sizes among and over the grains. Specimen, TV44-S148149. Scale bars 300 Μm (a), 30 Μm (b–f). 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. 13. Scanning electron microscope (SEM) images of pollen or spore clump with pollen grains or spores of unknown affinity that occur separately or adhering together in dyads, triads and tetrads; Torres Vedras locality, Portugal. a) Clump of pollen or spores that yielded the pollen or spores in this Text-figure; b–f) Grains adhering together in twos, threes or fours (b–e) or occurring singly and apparently with a proximal trilete mark (f); note that the adhering grains are connected by a smooth bandlike covering, perhaps remains of the microspore mother cell; note also abundant orbicules of various sizes among and over the grains. Specimen, TV44-S148149. Scale bars 300 Μm (a), 30 Μm (b–f).

Text-fig. 10. Scanning electron microscope (SEM) images of conifer seeds (a, b) and pollen (c) and monoporate pollen of unknown affinity (d–j); Torres Vedras locality, Portugal. a, b) Unnamed conifer seeds (conifer seed sp. 1); c) Clump of bisaccate pollen grains; d) Fragment with microsporangia that yielded the pollen in (e–j); e, f, h) Monoporate pollen grains folded in various ways, exposing the tiny pore (e, h, arrowheads) or resembling a monocolpate grain (f); g) Detail of pollen grain showing pore (arrowhead) and finely rugulate exine surface that reflects the reticulate infratectal layer beneath the thin tectum; i) Detail of pore showing very slightly thickened margin; j) Spherical orbicules on the surface of two grains. Specimens, TV44-S174594 (a), TV44-S174595 (b), TV44-S174573 (c), TV44-S137904 (d–j). Scale bars 1 mm (a, b), 300 Μm (d), 100 Μm (c), 6 Μm (e, f, h), 3 Μm (g, j), 1.5 Μm (i). 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. 10. Scanning electron microscope (SEM) images of conifer seeds (a, b) and pollen (c) and monoporate pollen of unknown affinity (d–j); Torres Vedras locality, Portugal. a, b) Unnamed conifer seeds (conifer seed sp. 1); c) Clump of bisaccate pollen grains; d) Fragment with microsporangia that yielded the pollen in (e–j); e, f, h) Monoporate pollen grains folded in various ways, exposing the tiny pore (e, h, arrowheads) or resembling a monocolpate grain (f); g) Detail of pollen grain showing pore (arrowhead) and finely rugulate exine surface that reflects the reticulate infratectal layer beneath the thin tectum; i) Detail of pore showing very slightly thickened margin; j) Spherical orbicules on the surface of two grains. Specimens, TV44-S174594 (a), TV44-S174595 (b), TV44-S174573 (c), TV44-S137904 (d–j). Scale bars 1 mm (a, b), 300 Μm (d), 100 Μm (c), 6 Μm (e, f, h), 3 Μm (g, j), 1.5 Μm (i).

opencc-by-4.0Dec 2017View details →

Text-fig. 7. Fossil urodelans from studied localities. a, b – Mioproteus caucasicus, trunk vertebra, dorsal (a) and lateral (b) views; c, d – Chelotriton paradoxus, trunk vertebra, dorsal (c) and lateral (d) view. Scale bar 1 mm. in Late Miocene (Early Turolian) Vertebrate Faunas And Associated Biotic Record Of The Northern Caucasus: Geology, Taxonomy, Palaeoenvironment, Biochronology

Text-fig. 7. Fossil urodelans from studied localities. a, b – Mioproteus caucasicus, trunk vertebra, dorsal (a) and lateral (b) views; c, d – Chelotriton paradoxus, trunk vertebra, dorsal (c) and lateral (d) view. Scale bar 1 mm.

opencc-by-4.0Dec 2017View details →

Text-fig. 8. Lower teeth of Arsinoitherium andrewsi from the Omanitherium type locality, Ashawq Formation, Oman. a) ONHM TN 2017-03, right m/3, (a1 – stereo buccal view, a2 – stereo occlusal view); b) ONHM TN 2017-04, right p/2 (b1 – stereo buccal view, b2 – stereo occlusal view); c) ONHM TN 2017-06, right p/4 (c1 – stereo buccal view, c2 – stereo occlusal view) (scale bar 10 mm). in Large Mammals From The Rupelian Of Oman - Recent Finds

Text-fig. 8. Lower teeth of Arsinoitherium andrewsi from the Omanitherium type locality, Ashawq Formation, Oman. a) ONHM TN 2017-03, right m/3, (a1 – stereo buccal view, a2 – stereo occlusal view); b) ONHM TN 2017-04, right p/2 (b1 – stereo buccal view, b2 – stereo occlusal view); c) ONHM TN 2017-06, right p/4 (c1 – stereo buccal view, c2 – stereo occlusal view) (scale bar 10 mm).

opencc-by-4.0Dec 2017View details →

Text-fig. 4. Measured section at the Omanitherium type locality. A–D are indurated beds highlighted in the stratigraphic section (figure seated on outcrop B provides a scale) (see Text-fig. 3). in Large Mammals From The Rupelian Of Oman - Recent Finds

Text-fig. 4. Measured section at the Omanitherium type locality. A–D are indurated beds highlighted in the stratigraphic section (figure seated on outcrop B provides a scale) (see Text-fig. 3).

Text-fig. 8. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a – undetermined species, spec. IBSS 320-137; b, c – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG: b – spec. IBSS 320-86, c – spec. IBSS 320-8. Scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia

Text-fig. 8. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a – undetermined species, spec. IBSS 320-137; b, c – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG: b – spec. IBSS 320-86, c – spec. IBSS 320-8. Scale bar 0.5 cm.

Text-fig. 9. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, b – Ternaricarpites floribundus KRASSILOV et VOLYNETS: a – spec. IBSS 320-10, b – spec. IBSS 320-31; c – Jixia pinnatipartita S.X.GUO et G.SUN, spec. IBSS 320-57. Scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia

Text-fig. 9. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, b – Ternaricarpites floribundus KRASSILOV et VOLYNETS: a – spec. IBSS 320-10, b – spec. IBSS 320-31; c – Jixia pinnatipartita S.X.GUO et G.SUN, spec. IBSS 320-57. Scale bar 0.5 cm.

Text-fig. 7. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, c, e – Achaenocarpites capitellatus KRASSILOV et VOLYNETS: a – spec. IBSS 320-132, c – spec. IBSS 320-132, e – spec. IBSS 320-120; b – Onychiopsis psilotoides (STOKES et WEBB) WARD, spec. – IBSS 320-165; d, g – branching infructescence with several follicular fruits: d – spec. IBSS 320-145, g – IBSS 320-145; f – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG, spec. IBSS 320-75. Scale bar 0.5 cm. in An Angiosperm Dominated Herbaceous Community From The Early - Middle Albian Of Primorye, Far East Of Russia

Text-fig. 7. Plant fossils from Primorye, Partizansk coal basin, Frentsevka Formation, Bolshoy Kuvshin locality, early – middle Albian. a, c, e – Achaenocarpites capitellatus KRASSILOV et VOLYNETS: a – spec. IBSS 320-132, c – spec. IBSS 320-132, e – spec. IBSS 320-120; b – Onychiopsis psilotoides (STOKES et WEBB) WARD, spec. – IBSS 320-165; d, g – branching infructescence with several follicular fruits: d – spec. IBSS 320-145, g – IBSS 320-145; f – Asiatifolium elegans G.SUN, S.X.GUO et SHAO L.ZHENG, spec. IBSS 320-75. Scale bar 0.5 cm.

Text-fig. 7. Molars referred to Karnimata fejfari sp. nov. from type locality Y 311. Right M2, a) YGSP 34588 and b) 54187, buccal upward. Lower teeth c) YGSP 34528 and d) 36166 both left m1, and e) 36170 and f) 54176, left and right m2; c–f figured lingual side upward. All teeth same scale. in Early Late Miocene Murine Rodents From The Upper Part Of The Nagri Formation, Siwalik Group, Pakistan, With A New Fossil Calibration Point For The Tribe Apodemurini (Apodemus/Tokudaia)

Text-fig. 7. Molars referred to Karnimata fejfari sp. nov. from type locality Y 311. Right M2, a) YGSP 34588 and b) 54187, buccal upward. Lower teeth c) YGSP 34528 and d) 36166 both left m1, and e) 36170 and f) 54176, left and right m2; c–f figured lingual side upward. All teeth same scale.

Text-fig. 2. First upper molar variation in Progonomys husssaini from three localities in the upper part of the Nagri Formation, Potwar Plateau, Pakistan. The 12 molars are oriented with buccal side upward, each at the same 1 mm scale, making size variation apparent. a) YGSP 33187 from locality Y 450; b) 34556, c) 54131, d) 54143, e) 54151, f) 54152, all from Y 311; g) 33937, h) 33947, i) 33957, j) 33959, k) 33963, l) 33976 all from Y 259. Figures a, c, e, f, h, k are all right M1; the others are left M1. in Early Late Miocene Murine Rodents From The Upper Part Of The Nagri Formation, Siwalik Group, Pakistan, With A New Fossil Calibration Point For The Tribe Apodemurini (Apodemus/Tokudaia)

Text-fig. 2. First upper molar variation in Progonomys husssaini from three localities in the upper part of the Nagri Formation, Potwar Plateau, Pakistan. The 12 molars are oriented with buccal side upward, each at the same 1 mm scale, making size variation apparent. a) YGSP 33187 from locality Y 450; b) 34556, c) 54131, d) 54143, e) 54151, f) 54152, all from Y 311; g) 33937, h) 33947, i) 33957, j) 33959, k) 33963, l) 33976 all from Y 259. Figures a, c, e, f, h, k are all right M1; the others are left M1.

Text-fig. 9. First upper molars of Parapodemus badgleyae sp. nov. (a–d) and Muridae, gen. et sp. indet. (e). a) YGSP 33936, holotype, locality Y 259, b) 33939 from Y 259, c) 34542 from Y 311, d) 34543 from Y 311, e) 34559 from Y 311. All molars but c are left molars, all figured with buccal side upward and at the same scale. in Early Late Miocene Murine Rodents From The Upper Part Of The Nagri Formation, Siwalik Group, Pakistan, With A New Fossil Calibration Point For The Tribe Apodemurini (Apodemus/Tokudaia)

Text-fig. 9. First upper molars of Parapodemus badgleyae sp. nov. (a–d) and Muridae, gen. et sp. indet. (e). a) YGSP 33936, holotype, locality Y 259, b) 33939 from Y 259, c) 34542 from Y 311, d) 34543 from Y 311, e) 34559 from Y 311. All molars but c are left molars, all figured with buccal side upward and at the same scale.

Text-fig. 4. First upper molars of Karnimata fejfari sp. nov. from type locality Y 311, all figured with buccal side upward. a) YGSP 34551, b) 34544, c) 34546 holotype, d) 34548, e) 34540, f) 34547, g) 34554, h) 36162, i) 54126, j) 54127, k) 54147, l) 54153. All at same 1 mm scale, all left M1 except for right h and l. in Early Late Miocene Murine Rodents From The Upper Part Of The Nagri Formation, Siwalik Group, Pakistan, With A New Fossil Calibration Point For The Tribe Apodemurini (Apodemus/Tokudaia)

Text-fig. 4. First upper molars of Karnimata fejfari sp. nov. from type locality Y 311, all figured with buccal side upward. a) YGSP 34551, b) 34544, c) 34546 holotype, d) 34548, e) 34540, f) 34547, g) 34554, h) 36162, i) 54126, j) 54127, k) 54147, l) 54153. All at same 1 mm scale, all left M1 except for right h and l.

Text-fig. 5. First upper molars of Karnimata fejfari sp. nov. from localities Y 450 (a–d) and Y 259 (e–l). a) YGSP 33181, b) 33182, c) 33185, d) 33186, e) 33945, f) 33940, g) 33948, h) 33958, i) 33960, j) 33946, k) 33967, l) 33973. Figured at same scale, buccal upward, all right M1 except for left f, g, j, l. in Early Late Miocene Murine Rodents From The Upper Part Of The Nagri Formation, Siwalik Group, Pakistan, With A New Fossil Calibration Point For The Tribe Apodemurini (Apodemus/Tokudaia)

Text-fig. 5. First upper molars of Karnimata fejfari sp. nov. from localities Y 450 (a–d) and Y 259 (e–l). a) YGSP 33181, b) 33182, c) 33185, d) 33186, e) 33945, f) 33940, g) 33948, h) 33958, i) 33960, j) 33946, k) 33967, l) 33973. Figured at same scale, buccal upward, all right M1 except for left f, g, j, l.

Text-fig. 5. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype (S174178; Vale de Agua sample 141) in lateral view showing shape and cell pattern; remains of mounting media (¤). b) Cut volume rendering of seed (cut at yz0553) showing the slightly raised tissue immediately adjacent to the lower edge of the hilum (arrow head) and palisade-shaped cells of exotesta. c) Apical view of seed showing hilar depression (hi), position of micropylar slit (mi) and the slightly raised raphal ridge (ra). d) Seed in lateral view showing raised tissue immediately adjacent to the lower edge of the hilum (arrow head) (S174495, Vale de Água sample 300). e) Cut volume rendering (cut at yz0500) of the seed in (5d) showing the raised tissue (arrow head) immediately adjacent to the lower edge of the hilum and sclerenchyma cells of exotesta. f) Detail of seed in (5d) showing micropylar slit (mi), hilum (hi) and raised tissue (arrow head) immediately adjacent to the lower edge of the hilum. g, h) Seed in lateral view (g) and view towards raphe (h) showing seed shape, the raised tissue below hilum (arrow head) and the raphal ridge (ra); note pointed micropylar area (S174179, Vale de Água sample 141). i) Seed surface of seed in (5d) showing the raised outlines of the undulate anticlinal walls of the exotestal cells. Scale bars = 250 µm (a–e, g, h); 125 µm (f, i). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal

Text-fig. 5. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype (S174178; Vale de Agua sample 141) in lateral view showing shape and cell pattern; remains of mounting media (¤). b) Cut volume rendering of seed (cut at yz0553) showing the slightly raised tissue immediately adjacent to the lower edge of the hilum (arrow head) and palisade-shaped cells of exotesta. c) Apical view of seed showing hilar depression (hi), position of micropylar slit (mi) and the slightly raised raphal ridge (ra). d) Seed in lateral view showing raised tissue immediately adjacent to the lower edge of the hilum (arrow head) (S174495, Vale de Água sample 300). e) Cut volume rendering (cut at yz0500) of the seed in (5d) showing the raised tissue (arrow head) immediately adjacent to the lower edge of the hilum and sclerenchyma cells of exotesta. f) Detail of seed in (5d) showing micropylar slit (mi), hilum (hi) and raised tissue (arrow head) immediately adjacent to the lower edge of the hilum. g, h) Seed in lateral view (g) and view towards raphe (h) showing seed shape, the raised tissue below hilum (arrow head) and the raphal ridge (ra); note pointed micropylar area (S174179, Vale de Água sample 141). i) Seed surface of seed in (5d) showing the raised outlines of the undulate anticlinal walls of the exotestal cells. Scale bars = 250 µm (a–e, g, h); 125 µm (f, i).

Text-fig. 3. Pazlia hilaris gen. et sp. nov. (a–e) from the Early Cretaceous Famalicão locality (sample 025), Portugal (holotype, S175096) and Pazliopsis reyi gen. et sp. nov. (f–i) from the Early Cretaceous Torres Vedras locality, Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings a–f, i) and scanning electron microscopy (SEM, g, h). a, b) Seed in lateral (a) and oblique apical (b) views showing the truncate hilar-micropylar region; note prominent hilar scar (hi) and micropyle (mi) at the seed apex and the raphe (ra) seen as slightly raised ridge; remains of mounting media (¤). c) Cut volume rendering (cut at yz0647) showing course of raphe (ra), hilar scar (hi) and micropyle (mi); note the strongly radially elongated cells below the hilar scar. d) Seed in antiraphal view. e) Seed surface showing the raised undulate anticlinal walls of the exotestal cells. f) Seed enclosed in remains of thin-walled fruit (fr) (S174632, Torres Vedras sample 298). g) Holotype, seed enclosed in remains of fruit (fr); raphal view showing the faintly ribbed surface of the seed (S171534, Torres Vedras sample 043). h) Apical view of seed fragment showing hilar scar (hi), position of raphe (ra) and the ribbed seed surface (S136683, Torres Vedras sample 044). i) Seed surface showing the raised undulate anticlinal walls of the exotestal cells (S171534; Torres Vedras sample 043). Scale bars = 250 µm (a–d, f–h); 125 µm (e, i). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal

Text-fig. 3. Pazlia hilaris gen. et sp. nov. (a–e) from the Early Cretaceous Famalicão locality (sample 025), Portugal (holotype, S175096) and Pazliopsis reyi gen. et sp. nov. (f–i) from the Early Cretaceous Torres Vedras locality, Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings a–f, i) and scanning electron microscopy (SEM, g, h). a, b) Seed in lateral (a) and oblique apical (b) views showing the truncate hilar-micropylar region; note prominent hilar scar (hi) and micropyle (mi) at the seed apex and the raphe (ra) seen as slightly raised ridge; remains of mounting media (¤). c) Cut volume rendering (cut at yz0647) showing course of raphe (ra), hilar scar (hi) and micropyle (mi); note the strongly radially elongated cells below the hilar scar. d) Seed in antiraphal view. e) Seed surface showing the raised undulate anticlinal walls of the exotestal cells. f) Seed enclosed in remains of thin-walled fruit (fr) (S174632, Torres Vedras sample 298). g) Holotype, seed enclosed in remains of fruit (fr); raphal view showing the faintly ribbed surface of the seed (S171534, Torres Vedras sample 043). h) Apical view of seed fragment showing hilar scar (hi), position of raphe (ra) and the ribbed seed surface (S136683, Torres Vedras sample 044). i) Seed surface showing the raised undulate anticlinal walls of the exotestal cells (S171534; Torres Vedras sample 043). Scale bars = 250 µm (a–d, f–h); 125 µm (e, i).

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. 6. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal (a, b, d, e: sample 141, c: sample 300); Synchrotron radiation X-ray tomographic microscopy (SRXTM, orthoslices). a) Longitudinal orthoslice (yz0563) through the median plane of the seed (holotype, S174178) showing the palisade-shaped cells of exotesta and collapsed inner parts of seed coat, raised exotestal tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and remains of cellular nutritive tissue. b) Longitudinal orthoslice (xz0659) through the micropylar region perpendicular to the median plane showing the exotestal tissue surrounding the transverse micropyle slit (mi). c) Longitudinal orthoslice (yz0500) through the median plane of the seed (S175095) showing raised tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and poorly preserved cells of the seed coat. d) Longitudinal orthoslice (xz0810) through middle part of seed perpendicular to the median plane (S174178) showing seed coat and remains of cellular nutritive tissue. e) Tangential and longitudinal orthoslice (xz0162) through the seed coat of holotype (S174178) showing thickened, undulate cell walls of exotesta (ex) and the short, thin-walled cells of tegmen (te) with a finely striate wrinkled surface. Scale bars = 250 µm (a, c, d); 125 µm (b, e). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal

Text-fig. 6. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal (a, b, d, e: sample 141, c: sample 300); Synchrotron radiation X-ray tomographic microscopy (SRXTM, orthoslices). a) Longitudinal orthoslice (yz0563) through the median plane of the seed (holotype, S174178) showing the palisade-shaped cells of exotesta and collapsed inner parts of seed coat, raised exotestal tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and remains of cellular nutritive tissue. b) Longitudinal orthoslice (xz0659) through the micropylar region perpendicular to the median plane showing the exotestal tissue surrounding the transverse micropyle slit (mi). c) Longitudinal orthoslice (yz0500) through the median plane of the seed (S175095) showing raised tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and poorly preserved cells of the seed coat. d) Longitudinal orthoslice (xz0810) through middle part of seed perpendicular to the median plane (S174178) showing seed coat and remains of cellular nutritive tissue. e) Tangential and longitudinal orthoslice (xz0162) through the seed coat of holotype (S174178) showing thickened, undulate cell walls of exotesta (ex) and the short, thin-walled cells of tegmen (te) with a finely striate wrinkled surface. Scale bars = 250 µm (a, c, d); 125 µm (b, e).