S. Magallón

Publications63
h-index30
Citations6,085
Highly Influential Citations574
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ABSOLUTE DIVERSIFICATION RATES IN ANGIOSPERM CLADES
TLDR
The phylogenetic distribution of clades with an exceedingly high number of species suggests that traits that confer high rates of diversification evolved independently in different instances and do not characterize the angiosperms as a whole.
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A metacalibrated time-tree documents the early rise of flowering plant phylogenetic diversity.
TLDR
This time-frame documents an early phylogenetic proliferation that led to the establishment of major angiosperm lineages, and the origin of over half of extant families, in the Cretaceous.
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Ferns diversified in the shadow of angiosperms
TLDR
It is shown that polypod ferns (> 80% of living fern species) diversified in the Cretaceous, after angiosperms, suggesting perhaps an ecological opportunistic response to the diversification of angios perms, as angiosPerms came to dominate terrestrial ecosystems.
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Angiosperm diversification through time.
TLDR
Angiosperm diversity is found to have mixed origins: slightly less than half of the living species belong to lineages with low to moderate diversification rates, which appeared between 130 and 102 Mya (Barremian-uppermost Albian; Lower Cretaceous).
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Phylogenetic pattern, diversity, and diversification of Eudicots
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Phylogeny of Basal Eudicots Based on Three Molecular Data Sets: atpB, rbcL, and 18s Nuclear Ribosomal DNA Sequences
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Land plant evolutionary timeline: gene effects are secondary to fossil constraints in relaxed clock estimation of age and substitution rates.
TLDR
It is suggested that pronounced substitution rate changes around the angiosperm crown node may represent a challenge for relaxed clocks to model adequately and whole-genome rate accelerations or decelerations may underlie the similar ages and correlated absolute rates estimated with different genes.
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Phylogenetic relationships and evolution of growth form in Cactaceae (Caryophyllales, Eudicotyledoneae).
TLDR
This study enabled us to provide a detailed hypothesis of relationships among cacti lineages and represents the most complete general phylogenetic framework available to understand evolutionary trends within Cactaceae.
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Use of Simultaneous Analyses to Guide Fossil‐Based Calibrations of Pinaceae Phylogeny
TLDR
It is demonstrated that simultaneous phylogenetic analyses of chloroplast DNA (matK and rbcL) and nonmolecular characters that include both extant genera and a limited number of fossil taxa provide useful hypotheses for calibrating molecular trees.
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Using fossils to break long branches in molecular dating: a comparison of relaxed clocks applied to the origin of angiosperms.
TLDR
This study explores the effect of the long branch subtending angiosperm stem branch in molecular dating and how different relaxed clocks react to it, and suggests a more adequate molecular dating approach might combine moderate background rate heterogeneity with large changes in rate at particular points in the tree.
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