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71 results for “Ediacaran”
Data from: A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus
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Preservation of erniettomorph fossils in clay-rich siliciclastic deposits from the Ediacaran Wood Canyon Formation, Nevada
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Data from: A new approach for investigating spatial relationships of ichnofossils: a case study of Ediacaran–Cambrian animal traces
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Data from: Relating Ediacaran fronds
Ediacaran fronds are key components of terminal-Proterozoic ecosystems. They represent one of the most widespread and common body forms ranging across all major Ediacaran fossil localities and time slices postdating the Gaskiers glaciation, but uncertainty over their phylogenetic affinities has led to uncertainty over issues of homology and functional morphology between and within organisms displaying this ecomorphology. Here we present the first large-scale, multigroup cladistic analysis of Ediacaran organisms, sampling 20 ingroup taxa with previously asserted affinities to the Arboreomorpha, Erniettomorpha, and Rangeomorpha. Using a newly derived morphological character matrix that incorporates multiple axes of potential phylogenetically informative data, including architectural, developmental, and structural qualities, we seek to illuminate the evolutionary history of these organisms. We find strong support for existing classification schema and devise apomorphy-based definitions for each of the three frondose clades examined here. Through a rigorous cladistic framework it is possible to discern the pattern of evolution within and between these clades, including the identification of homoplasies and functional constraints. This work both validates earlier studies of Ediacaran groups and accentuates instances in which previous assumptions of their natural history are uninformative.
Dataset for: Magnetic Mineralogy and Paleomagnetic Record of the Nama Group: Implications for Large-Scale Remagnetization of West Gondwanaland and Ediacaran Geomagnetic Instability
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Data from: Gregarious suspension feeding in a modular Ediacaran organism
Reconstructing Precambrian eukaryotic paleoecology is pivotal to understanding origins of the modern, animal-dominated biosphere. Here, we combine new fossil data from southern Namibia with computational fluid dynamics (CFD) testing between competing feeding models for the Ediacaran taxon Ernietta. In addition, we perform simulations for multiple individuals, allowing us to analyze hydrodynamics of living communities. We show Ernietta lived gregariously, forming shallow marine aggregations in the latest Ediacaran, 548-541 Ma. We demonstrate enhanced vertical mixing of the water column above aggregations, and preferential redirection of current into body cavities of downstream individuals. These results support reconstruction of Ernietta as a macroscopic Ediacaran suspension feeder, and moreover provide a convincing paleoecological advantage to feeding in aggregations analogous to those recognized in many extant marine metazoans. These results provide some of the oldest evidence of commensal facilitation by macroscopic eukaryotes yet recognized in the fossil record.
Taxonomic revision of Ediacaran tubular fossils: Cloudina, Sinotubulites and Conotubus
<p>The Ediacaran tubular fossils, <i>Cloudina</i>, <i>Sinotubulites</i>, and <i>Conotubus</i>, are taxonomically revised with type materials. It is proposed that <i>Aulophycus lucianoi</i> Beurlen and Sommer, 1957 is not a senior synonym of <i>Cloudina hartmannae</i> Germs, 1972. Instead, most of its syntypes may be assigned to <i>Sinotubulites</i> or other taxa. Lectotypes of <i>Sinotubulites baimatuoensis</i> Chen et al., 1981 and <i>Conotubus hemiannulatus</i> Zhang and Lin, 1986 are designated from rediscovered syntypes. <i>Sinotubulites baimatuoensis</i> Chen et al., 1981 is reported from the Mooifontein Member of Nama Group at Aar Farm, Namibia. <i>Cloudina waldei</i> Hahn and Pflug, 1985 is assigned to <i>Sinotubulites baimatuoensis</i> and thus its occurrence range is extended to Brazil. The lectotype of <i>Conotubus hemiannulatus</i> shows corrugations and annulations on the surface distinguishing it from Cloudina and other collared Ediacaran tubular fossils. Based on the taxonomic revision, we propose a <i>Cloudina hartmannae</i> Interval Zone for the terminal Ediacaran with the upper boundary defined by the first appearance datum of <i>Protohertzina anabarica</i>, i.e. the index fossil of the early Cambrian <i>Anabarites trisulcatus</i>–<i>Protohertzina anabarica</i> Assemblage Zone.</p>
Data from: Inference of facultative mobility in the enigmatic Ediacaran organism Parvancorina
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Data from: Relating Ediacaran fronds
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Data from: Gregarious suspension feeding in a modular Ediacaran organism
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Taxonomic revision of Ediacaran tubular fossils: Cloudina, Sinotubulites and Conotubus
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Allen Brain Atlas
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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.