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183 results for “early recording”
IODP Expedition 382: Supplementary Tables for "Episodes of early Pleistocene West Antarctic Ice Sheet retreat recorded by Iceberg Alley sediments"
<p>IODP Expedition 382: Supplementary Tables for "Episodes of early Pleistocene West Antarctic Ice Sheet retreat recorded by Iceberg Alley sediments"</p> <p>Includes SEM QEMSCAN® and <sup>40</sup>Ar/<sup>39</sup>Ar data for International Ocean Discovery Program (IODP) Expedition 382 Site U1538. Also includes a movie of a 3D-volume realization of an iceberg-rafted sedimentary layer from this site based on non-destructive X-ray microtomography imaging.</p> <p> </p> <p><strong>Data Set Captions:</strong></p> <p> </p> <p><strong>Data Set S1. </strong>Modal mineralogy data based on QEMSCAN® analyses, which infer minerals from chemistry. The mineral name assignations for each chemistry-based category stated in this table are aided by visual (microscope-based) inspection of the raw sieved samples.</p> <p><strong>Data Set S2. </strong>Mineral association data based on QEMSCAN® analyses. Please read data in columns, mineral against mineral (down then across left). These data define what touches what in the sample and is displayed as a percentage. Association refers to adjacency. Two minerals are “associated” if a pixel of one of the minerals occurs adjacent to a pixel of the other mineral. iExplorer software used scans the measured particles horizontally, from left to right, counting the associations that occur in the images (so the more pixels/closer the x-ray spacing the more accurate the data). Each column is independent. That is, it is split into a percentage of what touches what, so it is not expected that any two minerals’ data are reciprocal. The background category primarily reflects the free boundaries of ‘grains’ rather than liberated grains/particles. While it may provide an indicator of liberation, it does not represent liberation since it does not describe ‘particles’ which are made up of mineral grains. Inclusions and composite particles are therefore not described. Please consider the modal mineralogy (Tab. S1) when examining these mineral association data.</p> <p><strong>Data Set S3. </strong>Lithotyping data based on QEMSCAN® analyses. Particles have been digitally filtered using a set of lithotype rules (also displayed in this data set). These rules are based on the mineral grains in the particles themselves and use their area percent within each particle and their size in microns. The lithotype names stated here are largely assigned based on the dominant mineral grain in each category.</p> <p><strong>Data Set S4. </strong>40Ar/39Ar ages of individual sand-sized hornblende and mica. See main text for method used to generate these ages.</p> <p><strong>Data Set S5.</strong> Ties to place Hole U1538A NGR data on Dove Basin Stack (Reilly et al., 2021) depths.</p> <p><strong>Movie S1. </strong>3D-volume realization based on non-destructive X-ray microtomography imaging of a centimeter-scale iceberg-rafted debris-rich layer in Hole U1538A-36X-3W. 3D images were generated using a helical scanning trajectory that allows for long scan sequences and fast acquisition time. Based on the sample geometry, a voxel (pixel) resolution of ~14-μm was achieved. The 7000+ projection images were reconstructed to produce a 3D volume of image intensities (where higher values indicate greater x-ray attenuation). Avizo software was used for 3D segmentation and volume rendering to visualize gravel and sand to create this animation. The different colors assigned to each clast were chosen arbitrary.</p>
An updated generic classification of Cenozoic pleurotomariid gastropods, with new records from the Oligocene and Early Miocene of India
<p>Although taxonomically distinct, the Cenozoic pleurotomariids are the bottlenecked remnants of the Mesozoic members of the family in terms of morphology, with only conical forms surviving the end-Cretaceous mass extinction. Here, we propose an updated classification scheme for the Cenozoic representatives of this group, based on data from the entire Cenozoic pleurotomariid fossil record. We consider all conventional as well as several new characters so that this scheme can readily help to distinguish Cenozoic pleurotomariid genera. Following the new classification scheme, a revision of the generic status of Cenozoic species previously assigned to '<i>Pleurotomaria</i>' Defrance, 1826 is presented. Only a few Cenozoic pleurotomariid gastropods have been reported from the Indian subcontinent. Here we report four species from the Oligocene of the Kutch Basin and the Early Miocene (Burdigalian) of the Dwarka Basin of Gujarat, western India, of which two are described as new: <i>Perotrochus bermotiensis</i> n. sp. in the genus <i>Perotrochus</i> Fischer, 1885, and <i>Entemnotrochus kathiawarensis</i> n. sp., <em>Entemnotrochus </em>cf. <i>bianconii</i>, and <i>Entemnotrochus</i>? sp. 1 in the genus <i>Entemnotrochus</i> Fischer, 1885.</p>
FIG. 3 in First record of the new Neoplanorbulinid species (Foraminifera) from the Early Oligocene in Turkey, Malatya Basin, Eastern Taurids
FIG. 3. — Generalized stratigraphy of Cenozoic deposits in the Malatya Basin (modified from Karaman et al. 1993).
FIGURE 9 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 9. Middle trunk vertebra of Heterodon cf. Heterodon (Paleoheterodon) tiheni from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
FIGURE 13 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 13. Principal coordinates analysis showing the relative similarity of snake assemblages from 19 Barstovian-Blancan localities in Nebraska based on presence-absence.
FIGURE 2 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 2. Composite time-stratigraphic chart of the Neogene of Nebraska correlated with the number of snake genera presently identified from the Central Great Plains for each North American Land Mammal Age (NALMA) substage. Abbreviations: He (Hemingfordian), Ba (Barstovian), Cl (Clarendonian), Hh (Hemphillian). Each point on the snake richness chart is summarized for each substage at that substage's midpoint, and is not necessarily correlated with a particular rock unit on the right.Species richness values include fossils from the entire Central Great Plains region, while localities from Nebraska specifically and discussed in this study are listed at each substage point and come from the rock units to the right. The star represents the data from this study, which updates the previous lack of data from Cl1 across North America (represented by the gray hashed line) with data from UNSM Wt-13B. NALMAs and substages are correlated with time based on data and figures from Tedford et al. (2004). Rock Units are adapted from Joeckel et al. (2017) and Tedford et al. (2004). Snake generic richness is modified and updated from Jacisin et al., 2015).
FIGURE 5 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 5. Trunk vertebra of Charina cf. Charina prebottae from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
FIGURE 15 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 15. Climate envelope models of MAT (A) and AP (B) based on the congenerics of the snake assemblage of the Penny Creek local fauna. The gray-filled spaces signify the areas of overlap for all taxa included in the models.
FIGURE 14 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 14. Complete-linkage hierarchical cluster analysis showing the relative similarity of snake assemblages from 19 Barstovian-Blancan localities in Nebraska based on presence-absence.. Three major clusters are visible. From the left, the first cluster contains only Bw 123, the unique Pratt Slide local fauna; the second cluster contains all Barstovian and Clarendonian faunas minus Bw 123, but with the addition of Hemphillian Cn 106b (Thamnophis + Colubrinae indet.); and the third cluster, containing all Hemphillian through Blancan sites except Cn 106b.
FIGURE 1 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 1. Map showing the geographic position of UNSM locality Wt 13B from the Penny Creek Local Fauna at state (A), county (B), and local (C) scales. The locality is represented by a solid black circle.
FIGURE 4 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 4. Map of the 19 localities in Nebraska, USA with documented occurrences of snake fossils from the Barstovian through Blancan NALMAs.
FIGURE 3 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 3. Basic units of snake trunk vertebrae. A-E are from a fossil colubrine, and F is from a fossil natricid. A: trunk vertebra in dorsal view. B: trunk vertebra in ventral view. C: trunk vertebra in left lateral view. D: trunk vertebra in anterior view. E: trunk vertebra in posterior view. F: trunk vertebrae in left lateral view. Abbreviations: C, centrum; CD, condyle; CT, cotyle; D, diapophysis; HE, hemapophysis; HK, hemal keel; HY, hypapophysis; IR interzygapophyseal ridge; LY, lymphapophyses; NA, neural arch; NC, neural canal; NS, neural spine; P, parapophysis; PCF, paracotylar foramen; PLE, pleurapophysis; PO, postzygapophysis; POA, postzygapophyseal articular facet; PR, prezygapophysis; PRA, prezygapophyseal articular facet; PRP, prezygapophyseal accessory process; SF, subcentral foramen; SG, subcentral groove; SN, synapophyses; SR, subcentral ridge; ZG, zygantrum; ZGF, zygantral articular facet; ZY, zygosphene; ZYF, zygosphenal articular facet.
FIGURE 8 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 8. Posterior trunk vertebra of Salvadora paleolineata from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and left lateral views. Scale bar equals 1 mm.
FIGURE 12 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 12. Posterior middle trunk vertebra of Nerodia sp., from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
FIGURE 7 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 7. Trunk vertebra of Pantherophis kansensis from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
FIGURE 11 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 11. Trunk vertebra of Neonatrix magna from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
FIGURE 10 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 10. Posterior trunk vertebra of Neonatrix elongata from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
FIGURE 6 in Fossil snakes of the Penny Creek Local Fauna from Webster County, Nebraska, USA, and the first record of snakes from the Early Clarendonian (12.5-12 Ma) of North America
FIGURE 6. Trunk vertebra of Lampropeltis similis from the Penny Creek local fauna. From top left: dorsal, ventral, anterior, posterior, and lateral views (anterior to the left). Scale bar equals 1 mm.
Fig. 5 in The early fossil record of Caturoidea (Halecomorphi: Amiiformes): biogeographic implications
Fig. 5 Simplified global paleogeograhic reconstruction during the Late Jurassic, based on Scotese (2014: Map 35, Oxfordian) showing potential dispersal routes of caturoids through the Hispanic Corridor. Stars represent the only known records of caturoids outside Europe: 1, "Caturus" dartoni Eastman, 1899, from the lower Sundance Formation in South Dakota (Bathonian); 2, Caturus deani Gregory, 1923, from the Jagua Formation of Cuba (Oxfordian); 3, Catutoichthys olsacheri and Caturoidea sp. from the Vaca Muerta Formation of Argentina (Tithonian)
Fig. 2 Specimen MPCA 632 in The early fossil record of Caturoidea (Halecomorphi: Amiiformes): biogeographic implications
Fig. 2 Specimen MPCA 632 from the Jurassic of Neuquén, Argentina: a, fossil of Caturidae sp., including disarticulated skull bones described in Bogan et al. (2013); b, corresponding inventory card of the Museo Carlos Ameghino (MPCA)
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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)
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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.