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3,672 results for “Miocene”
Simulations of Miocene Antarctic ice-sheet variability under increased precipitation and sub-shelf melt, using the ice-sheet model IMAU-ICE
<p>To demonstrate the viability of a precipitation regime change leading to a fundamentally different volume-to-area ratio of the Antarctic ice sheet, we deploy the 3D thermodynamical ice sheet/shelf model IMAU-ICE v1.1.1. In the standard set-up (<a href="https://doi.org/10.5194/cp-2023-12">Stap et al., 2021a</a>, <a href="https://doi.pangaea.de/10.1594/PANGAEA.939114">2021b</a>), climate forcing follows from pre-run warm and cold snapshot climate simulations. The applied climate forcing is transiently calculated based on the prescribed CO<sub>2</sub> concentration and the modelled ice sheet size, through a matrix interpolation method. Equilibrium experiments are performed at various CO<sub>2</sub> levels between preindustrial and 3x preindustrial CO<sub>2</sub> values, with insolation at present-day levels and initiated from an ice-free Miocene Antarctic topography (dataset <a href="https://doi.pangaea.de/10.1594/PANGAEA.923109">Hochmuth et al., 2020</a>). Here, we perform additional sensitivity experiments, in which we apply a fixed precipitation increase and extreme sub-shelf melt rates. The precipitation anomaly is calculated as 25% of the warm snapshot precipitation fields, sub-shelf melt rates are set to 400 m/yr.</p> <p> </p>
Additional steady-state simulations of Miocene Antarctic ice-sheet variability using 3D thermodynamical ice-sheet model IMAU-ICE
<div> </div> <div> <div> <div>We supplement our previous dataset (<a href="https://doi.pangaea.de/10.1594/PANGAEA.939114">doi:10.1594/PANGAEA.939114</a>), with six additional steady-state simulations of the Miocene Antarctic ice sheet using the reference Miocene settings.</div> <div> </div> <div>IMAU-ICE was run using a 40x40km grid covering the Antarctic continent. Initial conditions were obtained from reconstructions of the Antarctic bathymetry and bedrock topography pertaining to 23 to 24 million years (Myr) ago (dataset <a href="https://doi.pangaea.de/10.1594/PANGAEA.923109" target="_self">doi:10.1594/PANGAEA.923109</a>). The simulations were forced by climate input data obtained from GENESIS simulations with varying CO2 levels (280 to 840 ppm) and Antarctic ice sheet cover (no ice to a large East-Antarctic ice sheet), and with present-day insolation. We utilized a matrix interpolation method to construct the time-varying climate forcing, based on the prescribed CO2 levels and ice cover simulated by IMAU-ICE.</div> <div> </div> <div>For each simulation, we provide the run script, 1D output variables including CO2 level and the sea level contribution of the Antarctic ice sheet, and 3D output variables including ice thickness, bedrock and surface height, surface mass balance, basal mass balance, ice velocities, and ice temperatures. For more information, please contact L.B. Stap at l.b.stap@uu.nl.</div> </div> </div>
Savanna-like Mammalian Community in the Mid-Miocene of Northern China--Supplementary Data
<p><strong><span>Supplementary Data 1:</span></strong><span> Stable Carbon and Oxygen isotopes data of Junggar Basin and Tongxin region, China.</span></p> <p><strong><span>Supplementary Data 2:</span></strong><span> Teeth hypsodonty of herbivorous mammals from China and Europe, including Sandelzhausen, Steinheim, Sansan, Madrid Basin, Qaidam Basin, Tunggur region, Baode, Lantian, Junggar Basin and Tongxin region.</span></p> <p><strong><span>Supplementary Data 3: </span></strong><span>Body mass of herbivorous mammals from different locations in China. </span></p>
Evolution of Indian Ocean Paleoceanography and South-East Asian Climate during the Miocene in response to change in regional topography
<p>This directory contain outputs of 9 paleo-climate simulations performed with the IPSL-CM5A2 and PISCES-v2 models. The simulations have used in a paper to be published in Nature Geoscience (2022) entitled "Divergent South Asian Monsoon Rainfall and Wind Histories due to topography effects" (Sarr et al.) that investigates the co-evolution of Arabian Sea upwelling and South Asian Monsoon rainfall and winds over the Miocene. It includes simulations with both early Miocene and late Miocene paleogeography.</p> <p>SimulationsOutputs.tar directory contains NetCDF files with ocean, ocean biogeochemistry and atmosphere variables. Data are monthly average over the last 100 years of each simulation.</p> <p>TopoMiocene.tar contains the paleogeographies used for the simulations.</p> <p> More informations on output contents can be find in README_detailsOutput.md document as well as within the Methods section of the publication.</p> <p>PISCES_update.tar contains updated routines for the PISCES-offline model (Aumont et al., 2015) that have been used for the publication. It contains a REAME.md file that explain how to include those updates within the reference code.</p> <p> </p>
A Tortonian (Late Miocene, 11.61–7.25 Ma) global vegetation reconstruction
<p>This contains the Tortonian data-model hybrid global map of vegetation (figure 6B of Pound et al., 2011). Please remember to cite the original journal article when using it.</p> <p>For full details on the construction of this global biome map for 11.6-7.25 million years ago, please see:</p> <p>Pound, M.J., Haywood, A.M., Salzmann, U., Riding, J.B., Lunt, D.J. and Hunter, S.J., 2011. A Tortonian (late Miocene, 11.61–7.25 Ma) global vegetation reconstruction. <em>Palaeogeography, Palaeoclimatology, Palaeoecology</em>, <em>300</em> (1-4), pp.29-45. https://doi.org/10.1016/j.palaeo.2010.11.029</p>
Data set: Australia's hidden radiation - phylogenomic analysis reveals rapid Miocene radiation of blindsnakes
<p>This repository contains the additional raw data to accompany our paper entitled "Australia’s hidden radiation: phylogenomic analysis reveals rapid Miocene radiation of blind snakes."</p> <p>This project is part of the AusARG Initiative funded by BioPlatforms Australia.</p> <p>Raw sequences data can be downloaded from the BioPlatforms downloads portal: https://data.bioplatforms.com/dataset?q=ticket%3ABPAOPS-1196</p> <p><strong>Information about files</strong></p> <ol> <li>ASTRAL_tree_SqCL_AHE.tre - output from ASTRAL-III just with SqCL data + outgroups</li> <li>ASTRAL_tree_SqCL_AHE_Ramphotyphlops.tre - same with above but also including additional <em>Ramphotyphlops </em>genes.</li> <li>mcmctree_1.txt - mcmcfile output from MCMCTree analysis using all SkewT or SkewNormal distribution priors.</li> <li>mcmctree_2.txt - mcmcfile output from MCMCTree analysis using SkewT, SkewNormal, and cauchy distribution priors. **This is the tree used in our publication**</li> <li>mcmctree_strategy1.tre - output phylogeny 1</li> <li>mcmctree_strategy2.tre - output phylogeny 2</li> <li>IQTREE_gcf_scf.nex - gene concordance and site factors for mcmctree_strategy2.tre</li> </ol> <p>tree_data/ folder contains concatenated gene trees (IQTREE) and corresponding shortcut coalescent method (ASTRAL-III) tree.</p> <p>Should there be questions regarding the code and data set, please contact the corresponding author.</p>
Biogeographic data for "The marine biodiversity impact of the Late Miocene Mediterranean salinity crisis"
<p>Lists of species that were present in the Mediterranean Sea both in the pre-evaporitic Messinian and the Zanclean (based on https://doi.org/<a href="../doi/10.5281/zenodo.10782428">10.5281/zenodo.10782428</a>), biogeographic information on their presence outside the Mediterranean, and accordingly their status as either "possible endemic" to the Mediterranean or "non-endemic" if they were also found outside the basin.</p> <p>In this version, we added also the list of species present in the Mediterranean Sea in the pre-evaporitic Messinian that can be considered possible endemics, based on the same rule, and the indication if they survived the MSC.</p>
Miocene construction of the High Andes recorded by exhumation of the Frontal Cordillera, La Ramada Massif of western Argentina (32°S) (Supporting Information)
<p>Supporting datasets for Howlett et al., "Miocene construction of the High Andes recorded by exhumation of the Frontal Cordillera, La Ramada Massif of western Argentina (32°S)" in <em>TECTONICS.</em></p>
Morphological cladogenesis and terminal dwarfing in extinct Late Miocene through Pliocene menardiform globorotalids: New complementary data to «Evolutionary prospection in the Neogene planktic foraminifer Globorotalia menardii and related forms from ODP Hole 925B (Céara Rise, western tropical Atlantic): evidence for gradual evolution superimposed by long distance dispersal ?, Swiss J. Palaeontology, 135:205-248»
<p>A complementary morphometric data set is provided to the study of Knappertsbusch (2016) about the shell evolution of menardiform globorotalids (Neogene planktic foraminifera) at ODP Hole 925B from Céara Rise in the the western tropical Atlantic. The new measurements confirm splitting of extinct <em>Globorotalia multicamerata</em> from the <em>G. menardii</em> stock via the intermediate form <em>G. limbata</em> between about 6 Ma to 5 Ma ago. After splitting both <em>G. limbata</em> and <em>G. multicamerata</em> show gradual divergence from <em>G. menardii</em> in several shell parameters illustrating morphological cladogenesis. Between 2.88 Ma and 2.59 Ma the same parameters show a concerted trend towards reduced values indicating pre-extinction dwarfing. A comparison with published literature data of Delta<sup>18</sup>O trends between species, that populated the mixed layer (<em>Globigerinoides sacculifer</em>) and the thermocline layer (<em>Neogloboquadrina dutertrei</em>) at this location during those times suggests, that both divergence and subsequent dwarfing trends were probably the results of changes in upper watermass stratification.</p> <p>The complementary data set is provided in six zipped archives APPENDIX A, B, C, D, E and F (zipped with free software 7-Zip 22.00 (x64), 2022-06-15 from 1999-2022 Igor Pawlow), together with a description of the data in file Report_925B_suppl_1.pdf.</p>
FIG. 4. — CUWM 53 in New Amphicyonids (Mammalia, Carnivora) from Moghra, Early Miocene, Egypt
FIG. 4. — CUWM 53, Moghra, Early Miocene, Amphicyon giganteus (Schinz, 1825): A, lingual view; B, occlusal view; C, labial view. Scale bar: 100 mm.
FIG. 2. — CUWM 55 in New Amphicyonids (Mammalia, Carnivora) from Moghra, Early Miocene, Egypt
FIG. 2. — CUWM 55, Moghra, Early Miocene. Holotype of Cynelos anubisi n. sp.: A, lingual view; B, occlusal view; C, labial view. Scale bar: 100 mm.
FIG. 7 in A new species of Tungurictis Colbert, 1939 (Carnivora, Hyaenidae) from the middle Miocene of Junggar Basin, northwestern China and the early divergence of basal hyaenids in East Asia
FIG. 7. — Tungurictis small sp., IVPP V 11497, left dentary fragment with m1 and m2 alveolus. A, stereo photos of occlusal view; B, lingual view; C, buccal view. Scale bars: 10 mm.
FIG. 5 in A new species of Tungurictis Colbert, 1939 (Carnivora, Hyaenidae) from the middle Miocene of Junggar Basin, northwestern China and the early divergence of basal hyaenids in East Asia
FIG. 5. — Tungurictis peignei, n. sp., IVPP V 25222, holotype, right dentary with p2-m2 (A, stereo photos, occlusal view, C, lingual, and D, buccal views) and IVPP V 11493, left dentary with p2-m1 (B, stereo photos, occlusal view; E, lingual view; F, buccal views). Scale bars: 10 mm.
FIG. 4 in A new species of Tungurictis Colbert, 1939 (Carnivora, Hyaenidae) from the middle Miocene of Junggar Basin, northwestern China and the early divergence of basal hyaenids in East Asia
FIG. 4. — Tungurictis peignei, n. sp., IVPP V 25222, holotype, isolated right I3, mesial view (A), right upper canine, buccal view (B), left P1, and left maxilla with P3-4 (C, stereo photos of occlusal view; D, buccal view). Scale bar: 10 mm.
FIG. 9 in Functional inferences on the long bones of Ischyrictis zibethoides (Blainville, 1841) (Carnivora, Mustelidae) from the middle Miocene locality of Sansan (Gers, France)
FIG. 9. — Distal view of the distal epiphysis of the left femur of several species of Mustelidae: Gulo gulo (Linnaeus, 1758) (A), Martes foina (Erxleben, 1777) (B), Meles meles (Schreber, 1778) (C), Taxidea taxus (Linnaeus, 1758) (D), and Ischyrictis zibethoides (Blainville, 1841) from Sansan (E), shown at the same size for a better comparison. Scale bar: 1 cm.
FIG. 4 in Functional inferences on the long bones of Ischyrictis zibethoides (Blainville, 1841) (Carnivora, Mustelidae) from the middle Miocene locality of Sansan (Gers, France)
FIG. 4. — Caudal view of the distal epiphysis of the right humerus of several species of Mustelidae: Gulo gulo (Linnaeus, 1758) (A), Martes foina (Erxleben, 1777) (B), Meles meles (Schreber, 1778) (C), Taxidea taxus (Linnaeus, 1758) (D), and Ischyrictis zibethoides (Blainville, 1841) from Sansan (E), shown at the same size for a better comparison. Scale bar: 1 cm.
FIG. 1 in An appraisal of the Middle-Late Miocene fossil decapod crustaceans of the 'Faluns' (Anjou-Touraine, France)
FIG. 1. — Location map of the outcrops area, and extension of the Falun's Sea during the Middle-Late Miocene (shaded area). Map from Gagnaison et al. 2012.?, limits of the "Faluns sea" probable extension.
FIG. 6. — A1-A3 in Early Miocene Gastropods from the Felli Section (Proto-Mediterranean Sea NW Greece)
FIG. 6. — A1-A3, Costoanachis cf. terebralis (Grateloup, 1834), AMPG(IV) 2467; B1, B2, Pusia cf. pyramidella (Brocchi, 1814), AMPG(IV) 2469; C1-C4, Athleta rarispina (Lamarck, 1811), AMPG(IV) 2462; D1-D4, Mangelia (s.l.) sp.: D1, D2, AMPG(IV) 2474; D3, D4, AMPG(IV) 2475, detail of microsculpture (SEM images). Scale bars: A1, A2, B1, B2, D1, D2, 1 mm; C1-C4, 10 mm; D3, 300 μm; D4, 100 μm.
FIG. 9. — A1-A3 in Early Miocene Gastropods from the Felli Section (Proto-Mediterranean Sea NW Greece)
FIG. 9. — A1-A3, Turbonilla (s.l.) sp. 1, AMPG(IV) 2580; B1-B3, Turbonilla (s.l.) sp. 2, AMPG(IV) 2583; C1, C2, Turbonilla (s.l.) sp. 3, AMPG(IV) 2584; D1-D3, Turbonilla (s.l.) sp. 4: D1, AMPG(IV) 2586 (SEM image); D2, D3, AMPG(IV) 2687. Scale bars: 500 µm.
FIG. 8. — A1, A2 in Early Miocene Gastropods from the Felli Section (Proto-Mediterranean Sea NW Greece)
FIG. 8. — A1, A2, 'Odostomia' sp. 2, AMPG(IV) 2558; B1-B3, Megastomia sp. 1, AMPG(IV) 2560; C1, C2, Brachystomia sp., AMPG(IV) 2570; D1-D3, Megastomia sp. 2: D1, AMPG(IV) 2563; D2, D3, AMPG(IV) 2564; E1-E4, Pyramistomia aliakmoni n. sp.: E1, E2, holotype, AMPG(IV) 1500; E3, paratype 1, AMPG(IV) 1501 (SEM image); E4, AMPG(IV) paratype 1, AMPG(IV) 1501, protoconch (SEM image); F1-F4, Parthenina sp. 1: F1, F2, AMPG(IV) 1573; F3, AMPG(IV) 1574 (SEM image); F4, AMPG(IV) 1574, apex (SEM image); G1, G2, Parthenina sp. 2: G1, AMPG(IV) 2575; G2, AMPG(IV) 2575, apex (SEM image); H,?Syrnola sp., AMPG(IV) 2577 (SEM image). Scale bars: A1, A2, B1-B3, D1, G1, H, 500 µm; C1, C2, D2, D3, E1, E2, 1 mm; E3, F1, F2, 400 µm; E4, F3, 200 µm; F4, G2, 100 µm.
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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.