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340 results for “Late Oligocene”
Fig. 4. Lamniform sharks from Summerville, upper Chattian. A, B in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 4. Lamniform sharks from Summerville, upper Chattian. A, B. Alopias cf. A. vulpinus (Bonnaterre, 1788). A. BCGM 9047, anterior tooth, labial view. B. BCGM 9048, lateral tooth, labial view. C. Carcharias sp., BCGM 9054, labial view. D. Carcharias cuspidatus (Agassiz, 1843), BCGM 9052, lower lateral tooth, labial view. E. Carcharocles sp., BCGM 9055, labial view.
Fig. 18. Oligocene Heterostegina from different Western Tethyan localities. A, B in The middle to late Eocene evolution of nummulitid foraminifer Heterostegina in the Western Tethys
Fig. 18. Oligocene Heterostegina from different Western Tethyan localities. A, B. Heterostegina sp. (Heterostegina assilinoides Blanckenhorn, 1890 emend. Henson, 1937 in Less 1991), middle Chattian, SBZ 22B/23, Csókás 4 (NE Hungary), A−form, equatorial sections, (A) MÁFI O. 413, (B) MÁFI O. 416. C. Heterostegina aff. 1 assilinoides Blanckenhorn, 1890 emend. Henson, 1937, Rupelian/Chattian boundary, SBZ 22A/B, A−form, equatorial section, Dazklrl A 7 (SW Turkey), ITU O/DAZ.A7−9. D–G. Heterostegina assilinoides Blanckenhorn, 1890 emend. Henson, 1937, early Chattian, SBZ 22B, A−form, equatorial sections. D. Klzllcaaǧaç (Bey Daǧlarl, SW Turkey), ITU O/KIZ.4−23. E, F. Ramleh (Israel), (E) MÁFI O. 08.1, (F) MÁFI O. 08.2. G. Kelereşdere (E Turkey), ITU O/KEL.19−31.
FIGURE 7 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 7. Casts of coracoids in the Smithsonian Institution, Washington DC, referable to Copepteryx, one of the very large plotopterids from the Oligocene Ashiya Group of Kitakyushu, Japan. 1, Dorsal aspect of shaft lacking the omal portion and 2, Isolated omal portion, ventral aspect. Abbreviations: FASC, facies articularis scapularis; see Figure 1 for others.
FIGURE 6 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 6. Cliff-beach exposure of the Sooke Formation. Letters indicate A, sandstone and shell-rich beds with burrows near the base; B, ripples; C, pebble conglomerate and shells; D, shell-rich coquinas and concretions; and E, Mytilus sp. and other shelly materials in cross-laminated and bedded sandstones. Rock hammer 26 cm, walking stick 115 cm.
FIGURE 8 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 8. Dimensional proportions of the Stemec coracoid (RBCM.EH2014.032.0001.001) and to two much larger plotopterids compared to cormorants, darters, and penguins. All other families of wing-propelled birds have larger values on both axes. Extinct examples are marked by a '+' symbol.
FIGURE 5 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 5. Geological context of the Sooke Formation and Carmanah Group rocks, Vancouver Island based on data from Clark and Arnold (1923), Cameron (1980), Muller et al. (1981), Johns et al. (2012).
FIGURE 4 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 4. Map of Carmanah Group surface exposures along western Vancouver Island, British Columbia. A, Brooks Peninsula; B, Nootka (Tatchu Point, Nootka Island, Hesquiat Peninsula, and Flores Island); C, Carmanah (Pachena Point south to Owen Point); and D, Sooke (Port Renfrew south to Sooke) (for additional information, see Johns et al., 2012, figure 1).
FIGURE 3 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 3. Comparison of the acrocoracoid of Plotopterum joaquinensis (LACM 8927) (1 and 3) to Stemec suntokum (RBCM.EH2014.032.0001.001) (2 and 4). 1 and 2, dorsal aspects, 3 and 4, cranial aspects. See Figure 1 for abbreviations.
FIGURE 1 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 1. Stemec suntokum gen. et sp. nov. holotype right coracoid (RBCM.EH2014.032.0001.001) from the Sooke Formation, at the southwestern end of Vancouver Island, British Columbia as re-assembled after preparation. 1-4, dorsal (1), medial (2), lateral (3), ventral (4) aspects. Abbreviations: FACL, facies articularis clavicularis; FAHU, facies articularis humeralis; PRO, procoracoid.
FIGURE 2 in A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
FIGURE 2. Components of Stemec coracoid (RBCM.EH2014.032.0001.001). 1, cross-section of the shaft immediately caudal of the cranial portion (a-a of Figure 1.1); 2, cross-section cranial to the sternal segment (b-b of Figure 1.1); and 3, structural features near the sternal articulation.
FIGURE 8 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 8. Paleopalynological assemblage of the Cuayuca Formation Mcy member and CONISS analysis. Sections were organized considering PAE analysis of Figure 7.
FIGURE 7 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 7. PAE anlaysis between studied sections from the Cuayuca Formation Mcy member: second section, Izúcar de Matamoros (IzS); Tzompahuacan (Tzo); Lagunillas de Rayón (LagRay); Lagunillas (Lag); "B" section, Cuayuca (CyB); "F" section, Izúcar de Matamoros (IzF); "H" section, Izúcar de Matamoros (IzH); Principal section (CyPrincipal); "A" section (CyA).
FIGURE 1 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 1. Location of the nine sections studied from the Cuayuca Formation, Puebla, Mexico. 1, Principal, "A" and "B" sections; 2, "F", "H" and second sections; and 3, Lagunillas, Lagunillas de Rayón and Tzompahuacan sections.
FIGURE 10 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 10. Correlations between two outcrops from the Izucar de Matamoros (F and H sections from the El Calvario) with the stratotype sections from the Cuayuca Formation.
FIGURE 5. Angiosperm pollen grains from the Cuayuca Formation. 1 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 5. Angiosperm pollen grains from the Cuayuca Formation. 1, Polyadopollenites sp. 2, Pb–9334(4): EF R37/ 4; 2-3, Polyadopollenites sp. 1, Pb–9340(1): 101.4/12.6; 4, Landolphia pollen type, Pb–9334(1): EF T41/1; 5, Perisyncolporites sp., Pb–9334(4): EF E44/1; 6, 10, Malpighiaceoidites sp., Pb–9334(4): EF H42/2; 7, 11, Mutisiapollis sp., Pb–8872(3): EF P33/4; 8-9, Striatricolporites sp., Pb–9336(1): EF G32/1; 12, Malvacipollis spinulosa, Pb- 9334(4): 94/7; 13, Ranunculacidites cf. communis, Pb–9334(4): EF D34/1/4; 14-15, Brosipollis sp., Pb–9334(4): EF U41/3; 16, Polyadopollenites sp. 1 Pb–9334(4): EF S39/4; 17, Tubulifloridites sp., Pb–9136(1): EF F39/4; 18, Ulmipollenites sp., Pb–9334(4): EF N40/1; 19, Thomsonipollis sabinetownensis, Pb-9334(4): 94.2/7.4; 20, Sabicea pollen type, Pb–9334(4): EF E42/1; 21, Ranunculacidites operculatus, Pb-9334(4): 101.8/7.2; 22 Rhamnaceaepollenites sp., Pb–9334(4): EF T32/2. Scale bar represents 10 µm.
FIGURE 4. Angiosperm pollen grains from the Cuayuca Formation. 1 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 4. Angiosperm pollen grains from the Cuayuca Formation. 1, Corsinipollenites sp. 1, Pb–9334(1): EF G33/ 3; 2, Corsinipollenites sp. 3, Pb–9334(4): EF R36/1; 3, Corsinipollenites sp. 2, Pb–9334(4): EF T35/3; 4-5, Margocolporites sp., Pb–9340(1): EF N35/3; 6, Margocolporites aff. vanwijhei, Pb-9334(1'): EF T39/2; 7, Monocolpopollenites aff. texensis Nichols, Ames and Traverse 1973 Pb–8872(1A): EF W29/1; 8-9 Rhoipites sp., Pb–8890(1):101.9/17.2; 10, Lymingtonia sp., Pb–9334(4): EF S32/4; 11, Momipites tenuipolus Pb-9334(4): 101.6/12.5; 12, Momipites coryloides, Pb-9138'(1): 92.2/2.8; 13, Fabaceae pollen type 3, Pb–9334(4): EF M34/4; 14, Clavainaperturites sp., Pb– 9147(2): EF R34/2; 15, Linum pollen type, Pb–9334 (1'): EF S33/2; 16, Magnaperiporites sp., Pb–9334(4): EF R39/2; 9. Scale bar represnts 10 µm.
FIGURE 2 in Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico
FIGURE 2. Stratigraphic columns with the location of the palynological samples studied from the Cuayuca Formation, Puebla, Mexico.
Fig. 5 in New artiodactyl ruminant mammal from the late Oligocene of Pakistan
Fig. 5. Palaeohypsodontus zinensis sp. nov., late Oligocene (Chattian), Lundo J2, Bugti Hills, Balochistan, Pakistan. A. Left astragalus (ISEM DBJ2−A2) in anterior (A1) and posterior (A2) views. B. Shaft of right metatarsal (ISEM DBJ2−A3) in anterior (B1) and distal (B2) views. All stero−photographs. Scale bars 1 cm.
Fig. 1 in New artiodactyl ruminant mammal from the late Oligocene of Pakistan
Fig. 1. Map of Pakistan with an enlargement of the Bugti area, and the location of Lundo Chur where the described material has been found. Present−day latitudes and longitudes are also shown.
Fig. 2 in New artiodactyl ruminant mammal from the late Oligocene of Pakistan
Fig. 2. Synthetic lithostratigraphic section of the Bugti Member (adapted from Welcomme et al. 2001) with the accurate stratigraphic setting of P. zinensis sp. nov.
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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
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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
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