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113 results for “Fossil calibration”
Supplementary material 8 from: Li X-R (2022) Phylogeny and age of cockroaches: a reanalysis of mitogenomes with selective fossil calibrations. Deutsche Entomologische Zeitschrift 69(1): 1-18. https://doi.org/10.3897/dez.69.68373
Figure S5
Data from: The impact of fossil stratigraphic ranges on tip‐calibration, and the accuracy and precision of divergence time estimates
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Data from: An evaluation of fossil tip-dating versus node-age calibrations in tetraodontiform fishes (Teleostei: Percomorphaceae)
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Data from: A rich fossil record yields calibrated phylogeny for Acanthaceae (Lamiales) and evidence for marked biases in timing and directionality of intercontinental disjunctions
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Data from: Best practices for justifying fossil calibrations
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Data from: Accounting for uncertainty in the evolutionary timescale of green plants through clock-partitioning and fossil calibration strategies
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Data from: Testing the impact of calibration on molecular divergence times using a fossil-rich group: the case of Nothofagus (Fagales)
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Data from: A stochastic rate-calibrated method for time-scaling phylogenies of fossil taxa
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A fossil-calibrated time-tree of all Australian freshwater fishes
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Data and code for calibrating the genomic clock of modern birds using fossils
<p>Data files and code used for producing the analyses in Figure 1 of Claramunt et al. in review. Calibrating the genomic clock of modern birds using fossils.</p>
Fig. 4 in Multigene fossil-calibrated analysis of the African lampeyes (Cyprinodontoidei: Procatopodidae) reveals an early Oligocene origin and Neogene diversification driven by palaeogeographic and palaeoclimatic events
Fig. 4 Estimated distribution extension of Procatopodidae genera based on information present in Wildekamp et al. (1986), Wildekamp (1995), and Wildekamp (2004)
Recommended fossil calibrators for time-scaled molecular phylogenies of Afrotheria
<p>A phylogenetic framework provides the necessary evolutionary context for studies of comparative anatomy, life history, behavior, biogeography, systematics, and conservation. Time-scaled phylogenetic analyses require researchers to include calibration ages which are used to fit a model that transforms tree branch lengths into units of time. The inclusion of multiple calibration ages (if they are available) is a best practice that brings all the available evidence to bear on the temporal model. While selecting the appropriate ages of calibrating fossil taxa is obviously important, perhaps more relevant is where those calibrations are applied in the tree. A misattributed fossil calibrator (e.g., using a stem-taxon to set a minimum age on a tipward crown-node) can severely distort the results. Our aim is to provide a summary of fossil calibrators that can be used in molecular phylogenetic assessments of Afrotheria. The literature that documents these fossils, and discusses their ages and affiliations, is somewhat scattered. Included in this contribution are the oldest extinct species that are (in our opinion) securely attributable to stem lineages of afrotherian clades. Each informs a minimum age for the adjacent rootward tree node. We then assemble a large DNA supermatrix that includes 32 genes and 39 afrotherian genera – including recently extinct elephants and sea-cows. A time-scaled phylogenetic estimate is derived from this dataset with explicit inclusion of fossil taxa in the analysis.</p>
Recommended fossil calibrators for time-scaled molecular phylogenies of Afrotheria
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