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340 results for “Late Oligocene”
Fig. 9. Strict consensus tree from phylogenetic analysis under extended implied weighting with 21 in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 9. Strict consensus tree from phylogenetic analysis under extended implied weighting with 21 different values of k.
Fig. 8. Consensus trees from phylogenetic analyses under equal weights. A. Strict consensus tree. B. Reduced consensus tree. a in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 8. Consensus trees from phylogenetic analyses under equal weights. A. Strict consensus tree. B. Reduced consensus tree. a, Martinmiguelia fernandezi; b, Taubatherium paulacoutoi; c, Ancylocoelus frequens; d, Huilatherium pluriplicatum; e, Asmodeus petrasnerus; f, Colpodon antucoensis + C. propinquus.
Fig. 7. Homalodotheriid notoungulate Asmodeus from Argentina. A in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 7. Homalodotheriid notoungulate Asmodeus from Argentina. A. Asmodeus petrasnerus Seoane and Cerdeño, 2014, from Quebrada Fiera, Mendoza; Deseadan SALMA (late Oligocene), MCNAM-PV 4958, left calcaneum, anterior (A1), posterior (A2) and medial (A3) views. B. Asmodeus osborni Ameghino, 1894 from Santa Cruz; Deseadan SALMA (late Oligocene), MACN A 12327, holotype, right calcaneum, medial (B1) and anterior (B2) views.
Fig. 3 in A new tribe of castoroidine beavers from the late Arikareean to Hemphillian (Oligocene-Miocene) of western North America
Fig. 3. Dentary of Priusaulax wilsoni sp. nov., UNSM 26599 from Hemingfordian (early Miocene) Upper Arikaree Group, Nebraska, USA, in right lateral (A) and posterior (B) views.
Fig. 6 in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 6. Tarsal bones of leontiniid notoungulate Gualta cuyana Cerdeño and Vera, 2015 from Quebrada Fiera, Mendoza, Argentina; Deseadan SALMA (late Oligocene). A. MCNAM-PV 4891, right astragalus, anterior (A1), distal (A2), posterior (A3), and lateral (A4) views. B. MCNAM-PV 5035, left navicular, anterior face to the left, proximal (B1) and distal (B2) views.
Fig. 4 in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 4. Left carpals and metacarpal of leontiniid notoungulate Gualta cuyana Cerdeño and Vera, 2015 from Quebrada Fiera, Mendoza, Argentina; Deseadan SALMA (late Oligocene), MCNAM-PV 4696. A. Pyramidal, anterolateral (A1), medial (A2), proximal (A3), and distal (A4) views. B. Magnum, anterior B1), proximal (B2), lateral (B3), and medial (B4) views. C. Unciform, anterolateral (C1), proximal (C2), medial (C3), and distal (C4) views. D. Proximal fragment of McIII, proximal (D1) and lateral (D2) views. E. Magnum and unciform in anatomical position, proximal view. F. Pyramidal and unciform in anatomical position, anterolateral view.
Fig. 5 in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 5. Tibiae of leontiniid notoungulate Gualta cuyana Cerdeño and Vera, 2015 from Quebrada Fiera, Mendoza, Argentina; Deseadan SALMA (late Oligocene). A. MCNAM-PV 4094, posterior view. B. MCNAM-PV 4785, distal (B1) and posterior (B2) views. C. Tibia, MCNAM-PV 4785, in anterior view and astragalus, MCNAM-PV 4891, in distal view.
Fig. 3 in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 3. Toxodontidae gen. et sp. indet. from Quebrada Fiera, Mendoza, Argentina; Deseadan SALMA (late Oligocene), MCNAM-PV 3907, left calcaneum fragment, posterior (A) and anterior (B) views.
Fig. 2. Toxodontian notoungulates from South America. A–D in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 2. Toxodontian notoungulates from South America. A–D. Proadinotherium sp. from Quebrada Fiera, Mendoza, Argentina; Deseadan SALMA (late Oligocene). A. MCNAM-PV 4238, right M2, occlusal view. B. MCNAM-PV 4960, left m2, labial (B1) and occlusal (B2) views. C. MCNAM-PV 3843, left m3, lingual (C1), labial (C2), and occlusal (C3) views. D. MCNAM-PV 4085, right calcaneum, posterior (D1), medial (D2), and anterior (D3) views. E. Proadinotherium muensteri Ameghino, 1902 from Colhue Huapi lake, Chubut, Argentina; Colhuehuapian SALMA (early Miocene), MACN Pv-17576 (cast), left calcaneum, medial view. F. Rynchippus equinus Ameghino, 1897 (Notohippidae) from Salla, Bolivia; Deseadan SALMA (late Oligocene), YPM VP-52313, left calcaneum, anterior (F1) and posterior (F2) views. G. Proadinotherium sp. from Quebrada Fiera, Mendoza, Argentina; Deseadan SALMA (late Oligocene), MCNAM-PV 4215, right astragalus, anterior (G1), posterior (G2), distal (G3), and lateral (G4) views. H. Proadinotherium leptognathum Ameghino, 1894 from Santa Cruz, Argentina; Deseadan SALMA (late Oligocene), MACN A 12319, left astragalus, anterior view. I. "Morphippus imbricatus" Ameghino, 1897 (Notohippidae) from Sarmiento Formation, Chubut, Argentina; Deseadan SALMA (late Oligocene), MACN A 12100, left astragalus, anterior view.
Fig. 1 in New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
Fig. 1. Google Earth view of Quebrada Fiera site (A). Location of the study area on the map of Argentina (C). Geographical location (asterisk) of the fossil locality (B).{fig. will be grayscale in printed version}
Fig. 2 in Morphological and systematic re-assessment of the late Oligocene "Halitherium" bellunense reveals a new crown group genus of Sirenia
Fig. 2. Cranial and dental elements of the dugongine sirenian Italosiren bellunensis (De Zigno, 1875) comb. nov. from Cavarzano, Italy; upper Chattian, late Oligocene. A. Left premaxilla (MGPD-19Z) in lateral (A1) and dorsal (A2) views. B. Parietal-supraoccipital skullcap (MGPD-18Z) in dorsal (B1) and posterior (B2) views. C. Outline drawing of left zygomatic process of squamosal (MGPD-22Z) and jugal (MGPD-7384Z) in lateral view; shaded area indicates missing part. D. Outline drawing of left zygomatic process of squamosal (MGPD-22Z) in dorsal view. E. Left maxillary fragment (MGPD-20/21Z) in occlusal view; dashed lines indicate the estimated outline of DP5, outlined area indicates portion of controversial interpretation and is considered here as representing remnants of the DP5 crown.
Fig. 1 in Morphological and systematic re-assessment of the late Oligocene "Halitherium" bellunense reveals a new crown group genus of Sirenia
Fig. 1. Geographic location of Cavarzano, Valle delle Guglie, near Belluno, Italy (modified after Bosellini et al. 1981 and Dallanave et al. 2009). Asterisk indicates estimated type locality of Italosiren bellunensis.
Fig. 2 in A termite from the Late Oligocene of northern Ethiopia
Fig. 2. Reconstruction of forewing venation of termite Chilgatermes diamatensis gen. et sp. nov. (CH 52−70) from Chilga Woreda, Ethiopia, Early Chattian (Oligocene), membrane reticulations omitted. Drawing by Ismael A. Hinojosa−Díaz. Abbreviations: CuA, anterior cubital vein; M, medial vein; R, radial vein; Rs, radial sector vein.
Fig. 1 in A termite from the Late Oligocene of northern Ethiopia
Fig. 1. Termite Chilgatermes diamatensis gen. et sp. nov. (CH 52−70), Chilga Woreda, Ethiopia, Early Chattian (Oligocene). Photomicrographs of part (A) and counterpart (B).Photomicrographs by MSE.
Fig. 8. Stingrays from Summerville, upper Chattian. A in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 8. Stingrays from Summerville, upper Chattian. A. Dasyatis cavernosa (Probst,1877), BCGM 9097, occlusal (A1) and labial (A2) view. B. D. cf. cavernosa, BCGM 9103, male tooth, occlusal (B1) and labial (B2) view. C. D. rugosa (Probst, 1877), BCGM 9099, occlusal (C1) and labial (C2) view. D. Dasyatidae gen. et. sp. indet., BCGM 9101, occlusal (D1), labial (D2), and lateral (D3) view. E. BCGM 9106, Dasyatis sp. denticle, lateral−oblique view.
Fig. 7. Skates from Summerville, upper Chattian. A, B in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 7. Skates from Summerville, upper Chattian. A, B, Raja sp. A. BCGM 9088, male anterior tooth, occlusal (A1), lateral (A2), and lingual (A3) view. B. BCGM 9089, female lateral tooth, labial (B1) and lateral (B2) view. C, D, Raja mccollumi sp. nov. C. BCGM 9093 (holotype), male anterior tooth, occlusal (C1), lateral (C2), labial (C3), and lingual (C4) view. D. BCGM 9199 (paratype), male lateral tooth, basal (D1), lateral (D2), lingual (D3) view. E. BCGM 9095, Raja sp. denticle, lateral−oblique view. F–H, R. mccollumi sp. nov. F. BCGM 9200 (paratype), female anterior tooth, occlusal (F1), labial (F2), and lingual (F3) view. G. BCGM 9201 (paratype), female lateral tooth, labial (G1) and lingual (G2) view. H. BCGM 9202 (paratype), female posterior tooth, occlusal (H1), labial (H2), lingual (H3) view.
Fig. 3. Shark remains from Summerville, upper Chattian. A in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 3. Shark remains from Summerville, upper Chattian. A. Squatina cf. S. angeloides van Beneden, 1873, BCGM 9043, antero−lateral tooth, labial view. B. Nebrius cf. N. serra (Leidy, 1877), SC2009.18.1, antero−lateral tooth, labial view. C. Rhincodon cf. R. typus (Smith, 1828), BCGM 9045, anterior tooth, labial (C1), lateral (C2), and basal (C3) view. D.?Cetorhinus parvus (Leriche, 1908), BCGM 9050, dermal scale, dorsal view, anterior at bottom.
Fig. 2 in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 2. Stratigraphy of the Chandler Bridge Formation showing facies designations of Katuna et al. (1997) and their correlative units (Beds 1–3) as discussed by Sanders and Weems (1986). Marine/marginal marine facies constitute a coarsening upward sequence from poorly sorted, sandy to silty clay to moderately sorted silty, very fine sand, whereas the bay/estuarine facies is poorly sorted silty to clayey fine quartz sand with occasional phosphate pebbles, and fluvial/estuarine facies consists of poorly sorted, clayey, fine sand with abundant phosphate pebbles.
Fig. 5. Carcharhiniform sharks from Summerville, upper Chattian. A–D in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 5. Carcharhiniform sharks from Summerville, upper Chattian. A–D. Carharhinus gibbesi (Woodward, 1889). A. BCGM 9059, juvenile upper anterior tooth, labial view. B. BCGM 9060, adult upper anterior tooth, labial view. C. BCGM 9061, juvenile upper lateral tooth, labial view. D. BCGM 9058, adult lower anterior tooth, labial view. E, F. Physogaleus aduncus (Agassiz, 1835). E. BCGM 9064, upper lateral tooth, labial view. F. BCGM 9066, lower anterior tooth, labial view. G. Physogaleus sp., BCGM 9068, antero−lateral tooth, labial view. H. Rhizoprionodon sp., BCGM 9070, labial view. I, J. Hemipristis serra (Agassiz, 1835). I. BCGM 9073, adult upper lateral tooth, labial view. J. BCGM 9072, juvenile upper lateral tooth, labial view. K. Sphyrna cf. S. media Springer, 1940, BCGM 9077, lateral tooth, labial view. L. Sphyrna zygaena (Linneaus, 1758), BCGM 9079, lateral tooth, lingual view. M. Bythaelurus sp., BCGM 9074, labial view. N–P. Galeorhinus sp. N. BCGM 9081, parasymphyseal tooth, labial view. O. BCGM 9082, antero−lateral tooth, labial view. P. BCGM 9083, lateral tooth, labial view.
Fig. 6. Batoids from Summerville, upper Chattian. A in Late Oligocene sharks and rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
Fig. 6. Batoids from Summerville, upper Chattian. A. Rhynchobatus pristinus (Probst, 1877), BCGM 9085, occlusal view. B, C. Myliobatinae gen. indet. B. BCGM 9117, lateral tooth, occlusal view. C. BCGM 9116, partial medial tooth, occlusal (C1) and lingual (C2) view. D. Paramobula fragilis (Cappetta, 1970), BCGM 9113, anterolateral tooth, occlusal (D1), labial (D2), and lateral (D3) view. E, F. Plinthicus stenodon Cope, 1869. E. BCGM 9120, partial anterior tooth, lateral (E1) and lingual (E2) view. F. BCGM 9121, lateral tooth, lateral (F1) and labial (F2) view. G. Rhinoptera cf. R. studeri (Agassiz, 1843), BCGM 9123, occlusal (G1) and lingual (G2) view. H. Gymnura sp., BCGM 9107, lateral (H1) and labial (H2) view.
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Allen Brain Atlas
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International Brain Laboratory public data
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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.