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1,137 results for “Upper Cretaceous”
Figure 7 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 7. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Apateodus crenellatus? Schwarzhans and Stringer (2020b), DMNH 2021-09-17, 1.78 mm. B. Palaeogadus? belli sp. nov., DMNH 2021-09-18, 1.25 mm (paratype). C. Palaeogadus? belli sp. nov., DMNH 2021-09-19, 1.78 mm (paratype). D. Palaeogadus? belli sp. nov., 2021-09-20, 2.21 mm (paratype). E. Palaeogadus? belli sp. nov., DMNH 2021-09-21, 2.34 mm (paratype). F. Palaeogadus? belli sp. nov., DMNH 2021-09-22, 3.13 mm (holotype). G. Palaeogadus? belli sp. nov., DMNH 2021-09-22, 3.13 mm (holotype, outer view). H Palaeogadus? belli sp. nov., DMNH 2021-09-22, 3.13 mm (holotype, dorsal view).
Figure 5 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 5. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Elops sp., DMNH 2021-09-01, 1.89 mm. B. Albuliformes indeterminate, DMNH 2021-09-02, 1.42 mm. C. Elopothrissus sp. DMNH 2021-09-03, 1.83 mm. D. Genartina sp. DMNH 2021-09-04, 0.85 mm. E. Osmeroides sp. DMNH 2021-09-05, 3.85 mm. F. Anguilla? chickasawae Schwarzhans and Stringer (2020b), DMNH 2021-09-6, 1.90 mm. G. Echiophis aff. E. semisphaeroides Schwarzhans (2003), DMNH 2021-09-07, 3.25 mm. H. Muraenanguilla? sp. DMNH 2021-09-08, 2.18 mm.
Figure 8 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 8. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Lapilli are macular views. Length in mm. A. Palaeogadus cf. P. weltoni Schwarzhans and Stringer (2020a), DMNH 2021-09- 23, 1.46 mm. B. Gadiformes indeterminate, DMNH 2021-09-24, 1.56 mm. C. Tippaha mythica Schwarzhans and Stringer (2020a), DMNH 2021-09-25, 3.85 mm. D. Eutawichthys maastrichtiensis Nolf and Stringer (1996), DMNH 2021-09-26, 3.93 mm. E. Eutawichthys zideki Nolf and Stringer (1996), DMNH 2021-09-27, 1.42 mm. F. Eutawichthys cf. E. stringeri Schwarzhans, Huddleston, and Takeuchi (2018b), DMNH 2021-09-28, 1.85 mm. G. Ampheristus cf. A. americanus Schwarzhans and Stringer (2020a), DMNH 2021-09-29, 1.58 mm. H. Protobythities brzobohatyi Schwarzhans (2010), DMNH 2021-09-30, 1.68 mm. I. Lapillus type 1, DMNH 2021-09-31, 2.98 mm.
Figure 2 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 2. Regional map of otolith-bearing Cretaceous sites mentioned in the text. Dashed line shows approximate shoreline during the late Maastrichtian (Roberts and Kirschaum 1995, Dastas et al. 2014, Stringer and Sloan 2018).
Figure 4 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 4. Geologic section of borings B-5, B-6, B-8, B-9, and B-10 at the Cabot site, Lonoke County, Arkansas, USA. Black shapes designate the approximate level at which otoliths were recovered (bgl m=below ground level in meters). The shape is indicative of the number of otoliths recovered at that level: circle=less than 10 specimens; triangle=11–100 specimens; rectangle=101–500 specimens; and star=greater than 500 specimens.
Figure 1 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 1. Stratigraphy of the Arkadelphia Formation and other formations discussed in the text based primarily on McFarland (2004). The gray-shaded area represents an unconformity.
Figure 9 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 9. Maastrichtian otolith localities in North America and otolith-based faunal communities (bioprovinces) based on Schwarzhans and Stringer (2020a). The Western Interior Seaway community is outlined in green, and the localities are shown in green circles. The Appalachian community is outlined in red, and the localities are shown in red circles. The number in the circle is the number of species known from the localities. The white star is the Arkadelphia Formation site at Cabot, Arkansas, and the focus of this study. The base paleogeographic map was modified from Blakey (2014) and Scotese (2014).
Figure 6 in First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway
Figure 6. Otoliths from the Cretaceous Arkadelphia Formation. All specimens unless otherwise noted are inner views of right sagittae. Length in mm. A. Kokenichthys navis Schwarzhans and Stringer (2020b), DMNH 2021-09-9, 4.10 mm. B. Clupeiform? indeterminate DMNH 2021-09-10, 1.42 mm. C. Arius subtilis Schwarzhans and Bratishko (2011), DMNH 2021-09-11, 4.61 mm. D. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-13, 2.49 mm. E. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-14, 3.06 mm. F. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-15, 3.99 mm. G. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-16, 7.98 mm. H. Vorhisia vulpes Frizzell (1965b), DMNH 2021-09-12, 19.36 mm.
Fig. 5 in Upper Cretaceous Foraminifera Murgeina Apula (Luperto Sinni, 1968): A Methusalem And Cenomanian-Turonian Boundary Survivor Taxon
Fig. 5 Possible post-Triassic fusulinanids Protopeneroplis striata Weynschenk (a-c), Upper Jurassic of Romania and Murgeina apula (Luperto Sinni), Upper Cretaceous (Campanian) of Croatia (d). a Axial section. Note the irregular coiling, the alternating dark and bright layers in the umbo, and the presence of an outer hyaline-calcitic layer (arrow). b-c Equatorial sections. Note the double-layered septum (s) and wall (arrow). d Slightly oblique axial section. Note the alternating dark and bright layers in the umbo (compare to P. striata in a).
Text-fig. 3. Upper Cretaceous to Oligocene/Miocene Sciadopityspollenites taxa, all scale bars in LM and SEM overview images 10 µm, scale bars in SEM detailed images 2 µm. a–f: cf. Sciadopityspollenites serratus from Vilui basin (Siberia), a – LM image, equatorial view, b – SEM equatorial overview with leptoma, c – detail SEM of leptoma? and echinate verrucae, d – LM image equatorial view, e – SEM of distal polar view, f – SEM detailed view of verrucate, echinate perforate sexine sculpturing; g–i: Sciadopityspollenites serratus from Bayerhof Maar (Germany), g – LM image of proximal polar side, h – SEM overview of distal polar side, i – SEM detail of verrucate, echinate, perforate sculpturing. in The Occurrence Of Pollen Of Sciadopityaceae Luerss. Through Time
Text-fig. 3. Upper Cretaceous to Oligocene/Miocene Sciadopityspollenites taxa, all scale bars in LM and SEM overview images 10 µm, scale bars in SEM detailed images 2 µm. a–f: cf. Sciadopityspollenites serratus from Vilui basin (Siberia), a – LM image, equatorial view, b – SEM equatorial overview with leptoma, c – detail SEM of leptoma? and echinate verrucae, d – LM image equatorial view, e – SEM of distal polar view, f – SEM detailed view of verrucate, echinate perforate sexine sculpturing; g–i: Sciadopityspollenites serratus from Bayerhof Maar (Germany), g – LM image of proximal polar side, h – SEM overview of distal polar side, i – SEM detail of verrucate, echinate, perforate sculpturing.
Text-fig. 2. SEM images of Miranthus elegans gen. et sp. nov.; Mira locality, Portugal. a, b: Flowers in oblique lateral view showing remains of calyx and slightly semi-inferior ovary with elongated apical style (a); note larger openings in the floral tissue (asterisk) interpreted as schizogenous secretory cavities and the stomata-like secretory structures on the upper portion of the ovary (arrows) that are interpreted as nectariferous (b). c: Detail of ovary surface showing secretory stomata-like structures (arrows). d: Flower in lateral view showing fragmentary calyx and broken slightly semi-inferior ovary with secretory stomata-like structures; note the point of attachment of the central placenta (pl). e: Cluster of seeds removed from the ovary in (d) showing reticulate surface. f: Outer (abaxial) surface of calyx lobe showing the slightly pointed papillae and scattered, fine trichomes (arrows). g: Triaperturate pollen grains from the ovary surface. Specimens, Mira 100-S153146 (a, b), Mira 100-S170155 (c), Mira 100-S101266 (d, e), Mira 105-S100732 (f), Mira 100-S170125 (g). Scale bars = 600 µm (a, b, d), 300 µm (f), 100 µm (c, e), 10 µm (g). in Early Flowers Of Primuloid Ericales From The Late Cretaceous Of Portugal And Their Ecological And Phytogeographic Implications
Text-fig. 2. SEM images of Miranthus elegans gen. et sp. nov.; Mira locality, Portugal. a, b: Flowers in oblique lateral view showing remains of calyx and slightly semi-inferior ovary with elongated apical style (a); note larger openings in the floral tissue (asterisk) interpreted as schizogenous secretory cavities and the stomata-like secretory structures on the upper portion of the ovary (arrows) that are interpreted as nectariferous (b). c: Detail of ovary surface showing secretory stomata-like structures (arrows). d: Flower in lateral view showing fragmentary calyx and broken slightly semi-inferior ovary with secretory stomata-like structures; note the point of attachment of the central placenta (pl). e: Cluster of seeds removed from the ovary in (d) showing reticulate surface. f: Outer (abaxial) surface of calyx lobe showing the slightly pointed papillae and scattered, fine trichomes (arrows). g: Triaperturate pollen grains from the ovary surface. Specimens, Mira 100-S153146 (a, b), Mira 100-S170155 (c), Mira 100-S101266 (d, e), Mira 105-S100732 (f), Mira 100-S170125 (g). Scale bars = 600 µm (a, b, d), 300 µm (f), 100 µm (c, e), 10 µm (g).
Text-fig. 11. a: Sapindopsis sp., 3rd Kamenka, Frentsevka Formation, early-middle Albian, spec. IBSS 40-1; b, c: Trochodendroides sp., Konstantinovka, Galenki Formation, early-middle Albian, spec. IBBS 11/145, b – upper part of leaf, c – crenate margin; d: Dicotylophyllum sp. 2, Konstantinovka, Galenki Formation, early-middle Albian, spec. IBBS 11/133; e: Sapindopsis cf. angusta (HEER) SEWARD et V.M.CONWAY, Andreev Inlet, Frentsevka Formation, early-middle Albian, spec. IBSS 28/104; f: Sapindopsis variabilis FONTAINE, Bikin River, Alchan Formation, early-middle Albian, spec. IBSS 4561/124-1; g: Laurophyllum sp., Konstantinovka, Galenki Formation, early-middle Albian, spec. IBBS 11/131. Scale bar 1 cm in a, b, d, f, g and 5 mm in c, e. in Angiosperm Diversification In The Early Cretaceous Of Primorye, Far East Of Russia
Text-fig. 11. a: Sapindopsis sp., 3rd Kamenka, Frentsevka Formation, early-middle Albian, spec. IBSS 40-1; b, c: Trochodendroides sp., Konstantinovka, Galenki Formation, early-middle Albian, spec. IBBS 11/145, b – upper part of leaf, c – crenate margin; d: Dicotylophyllum sp. 2, Konstantinovka, Galenki Formation, early-middle Albian, spec. IBBS 11/133; e: Sapindopsis cf. angusta (HEER) SEWARD et V.M.CONWAY, Andreev Inlet, Frentsevka Formation, early-middle Albian, spec. IBSS 28/104; f: Sapindopsis variabilis FONTAINE, Bikin River, Alchan Formation, early-middle Albian, spec. IBSS 4561/124-1; g: Laurophyllum sp., Konstantinovka, Galenki Formation, early-middle Albian, spec. IBBS 11/131. Scale bar 1 cm in a, b, d, f, g and 5 mm in c, e.
Text-fig. 5. a: coal seam "Rabochy" with three tuff layers in upper part of Lipovtsy Formation in Porechye open pit coal mine; b: same section, enlarged view, upper tuff layer, sample 160/4 site; c: tuff layer in upper part of Frentsevka Formation below conglomerate at Palets Cape; d: same section, enlarged view, sample 1 site. in Angiosperm Diversification In The Early Cretaceous Of Primorye, Far East Of Russia
Text-fig. 5. a: coal seam "Rabochy" with three tuff layers in upper part of Lipovtsy Formation in Porechye open pit coal mine; b: same section, enlarged view, upper tuff layer, sample 160/4 site; c: tuff layer in upper part of Frentsevka Formation below conglomerate at Palets Cape; d: same section, enlarged view, sample 1 site.
Figure 2 in A Partial Skeleton of the Tyrannosaurid Dinosaur Aublysodon from the Upper Cretaceous of New Mexico
Figure 2—Aublysodon cf. A. mirandus (OMNH 10131). Frontal-parietal mass in 1, dorsal view, and 2, right lateral view; left postorbital in 3, medial view, and 4, lateral view; left dentary in 5, medial view, and 6, lateral view. Abbreviations: cl, cleft in frontal; fr, frontal and suture for frontal; j, suture for jugal; lsp, suture for laterosphenoid; p, parietal; po, suture for postorbital; sq, broken squamosal process. Scale bar 10 cm.
Figure 3 in A Partial Skeleton of the Tyrannosaurid Dinosaur Aublysodon from the Upper Cretaceous of New Mexico
Figure 3—Comparison of tyrannosaurid frontal bones in dorsal view. 1, Aublysodon mirandus (LACM 28471). 2, cf. Aublysodon sp. (TMP 80.16.485). 3, Aublysodon cf. A. mirandus (OMNH 10131). 4, Nanotyrannus lancensis (CMNH 5741). 5, Albertosaurus libratus (AMNH 5664). 6, Albertosaurus libratus (USNM 12814). 7, Daspletosaurus torosus (NMC 8506). Sutures for adjacent bones are shown: f, frontal; fn, notch in frontal (also indicated by arrow); 1, lacrimal; n, nasal; p, parietal; pf, prefrontal; po, postorbital; stf, border of supratemporal fenestra. Scale bar 10 cm. 1 and 5 are adapted from Molnar (1978), 2 from Currie (1987), 4 from Bakker et al. (1988), 6 and 7 from Russell (1970).
FIGURE 8. Molfetta dinosaur tracks, photogrammetry derived 3D in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 8. Molfetta dinosaur tracks, photogrammetry derived 3D models and interpretations; 1-2, DEM and contour line map of a theropod footprint (contour lines have an interval of 0.2 cm); 4-5, DEM and contour line map of an ornitischian footprint; 3 and 6, interpretative outline drawings of the studied tracks.
FIGURE 7 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 7. Orthophotomosaic of the Molfetta tracksite produced by the aerial survey performed with the hexacopter.
FIGURE 6 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 6. Comparison of the products generated for the sector including the "L-shaped trace". 1, orthophoto raster map; 2, hillshade raster map; 3, slope raster map; 4, contour lines vector map.
FIGURE 4 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 4. Comparison of the results obtained on a sample area. 1, orthophoto; 2, DEM; 3, slope raster map produced by the quadcopter at flight height of 30 m; 4, orthophoto; 5, DEM; 6, slope raster map produced by the quadcopter at a flight height of 10 m; 7, orthophoto; 8, DEM; 9, slope raster map produced by the hexacopter at a flight height of 15 m.
FIGURE 3 in The use of aerial and close-range photogrammetry in the study of dinosaur tracksites: Lower Cretaceous (upper Aptian/lower Albian) Molfetta ichnosite (Apulia, southern Italy)
FIGURE 3. The UAVs (Unmanned Aerial Vehicles) used for aerial survey of the tracksite. 1, quadcopter SZ DJI Phantom 4; 2, hexacopter Tarot FY680 Pro.
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