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7 results for “acanthomorphs”
Taxonomically revised dataset of acanthomorphic acritarch species of the Doushantuo Formation: dataset for rarefaction, NMDS, and network analysis
<p>This is supplementary material for the article entitled "Silicified microfossils from the Ediacaran Doushantuo Formation along a shelf margin-slope-basin transect in Hunan Province, South China, with stratigraphical implications" by Ouyang et al. The dataset contains (1) taxonomic revisions of published acanthomorph specimens from the Doushantuo Formation from 55 previous publications that provide clear, pulished, microfossil images and clearly designated stratigraphic horizons; and updated occurrence data of Doushantuo acanthomorphic acritarchs and certain sphaeromorphic taxa considered as stratigraphically useful (i.e., <em>Schizofusa zangwenlongii</em> Grey, 2005) based on the revised taxonomy, with each occurrence assigned to a specific fossil collection; (2) acritarch relative abundance data from this and six previous publications for rarefaction analysis in this study; (3) presence/absence data of the Doushantuo acritarchs (based on occurrence data in sheet 1) for NMDS and network analysis with R in this study; (4) species abbreviations in (3); (5) species loadings generated by the NMDS analysis and plotted in Fig. 41.3 of this study.</p>
Taxonomically revised dataset of acanthomorphic acritarch species of the Doushantuo Formation: dataset for rarefaction, NMDS, and network analysis
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Data from: A new Cenomanian acanthomorph fish from the El Chango quarry (Chiapas, South-Eastern Mexico) and its implications for the early diversification and evolutionary trends of acanthopterygians
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Data from: Integration and modularity of teleostean pectoral fin shape and its role in the diversification of acanthomorph fishes
Phenotypic integration and modularity describe the strength and pattern of interdependencies between traits. Integration and modularity have been proposed to influence the trajectory of evolution, either acting as constraints or facilitators. Here, we examine trends in the integration and modularity of pectoral fin morphology in teleost fishes using geometric morphometrics. We compare the fin shapes of the highly diverse radiation of acanthomorph fishes to lower teleosts. Integration and modularity are measured using two-block partial least squares analysis and the covariance ratio coefficient between the radial bones and lepidotrichia of the pectoral fins. We show that the fins of acanthomorph fishes are more tightly integrated but also more morphologically diverse and faster evolving compared to non-acanthomorph fishes. The main pattern of shape covariation in non-acanthomorphs is concordant with the main trajectory of evolution between non-acanthomorphs and acanthomorphs. Our findings support a facilitating role for integration during the acanthomorph diversification. Potential functional consequences and developmental mechanisms of fin integration are discussed.
Data from: Are 100 enough? Inferring acanthomorph teleost phylogeny using Anchored Hybrid Enrichment
Background: The past decade has witnessed remarkable progress towards resolution of the Tree of Life. However, despite the increased use of genomic scale datasets, some phylogenetic relationships remain difficult to resolve. Here we employ anchored phylogenomics to capture 107 nuclear loci in 29 species of acanthomorph teleost fishes, with 25 of these species sampled from the recently delimited clade Ovalentaria. Previous studies employing multilocus nuclear exon datasets have not been able to resolve the nodes at the base of the Ovalentaria tree with confidence. Here we test whether a phylogenomic approach will provide better support for these nodes, and if not, why this may be. Results: After using a novel method to account for paralogous loci, we estimated phylogenies with maximum likelihood and species tree methods using DNA sequence alignments of over 80,000 base pairs. Several key relationships within Ovalentaria are well resolved, including 1) the sister taxon relationship between Cichlidae and Pholidichthys, 2) a clade containing blennies, grammas, clingfishes, and jawfishes, and 3) monophyly of Atherinomorpha (topminnows, flyingfishes, and silversides). However, many nodes in the phylogeny associated with the early diversification of Ovalentaria are poorly resolved in several analyses. Through the use of rarefaction curves we show that limited phylogenetic resolution among the earliest nodes in the Ovalentaria phylogeny does not appear to be due to a deficiency of data, as average global node support ceases to increase when only 1/3rd of the sampled loci are used in analyses. Instead this lack of resolution may be driven by model misspecification as a Bayesian mixed model analysis of the amino acid dataset provided good support for parts of the base of the Ovalentaria tree.Conclusions: Although it does not appear that the limited phylogenetic resolution among the earliest nodes in the Ovalentaria phylogeny is due to a deficiency of data, it may be that both stochastic and systematic error resulting from model misspecification play a role in the poor resolution at the base of the Ovalentaria tree as a Bayesian approach was able to resolve some of the deeper nodes, where the other methods failed.
Data from: Integration and modularity of teleostean pectoral fin shape and its role in the diversification of acanthomorph fishes
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Data from: Are 100 enough? Inferring acanthomorph teleost phylogeny using Anchored Hybrid Enrichment
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.