• Publications
  • Influence
A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes
TLDR
A new large-scale phylogeny of squamate reptiles is presented that includes new, resurrected, and modified subfamilies within gymnophthalmid and scincid lizards, and boid, colubrid, and lamprophiid snakes. Expand
A large-scale phylogeny of Amphibia including over 2800 species, and a revised classification of extant frogs, salamanders, and caecilians.
TLDR
This study provides further evidence that the supermatrix approach provides an effective strategy for inferring large-scale phylogenies using the combined results of previous studies, despite many taxa having extensive missing data. Expand
Biogeographic analysis reveals ancient continental vicariance and recent oceanic dispersal in amphibians.
  • R. A. Pyron
  • Biology, Medicine
  • Systematic biology
  • 1 September 2014
TLDR
It is found that Pangaean origin and subsequent Laurasian and Gondwanan fragmentation explain a large proportion of patterns in the distribution of extant species, and dispersal during the Cenozoic has also exerted a strong influence. Expand
Divergence time estimation using fossils as terminal taxa and the origins of Lissamphibia.
  • R. A. Pyron
  • Biology, Medicine
  • Systematic biology
  • 1 July 2011
TLDR
Potential pitfalls for the use of fossils as post hoc age constraints on internal nodes are illustrated and the importance of explicit phylogenetic analysis of extinct taxa are highlighted. Expand
The phylogeny of advanced snakes (Colubroidea), with discovery of a new subfamily and comparison of support methods for likelihood trees.
TLDR
This study provides the most comprehensive phylogeny of Colubroidea to date, and suggests that SHL values may provide a useful complement to bootstrapping for estimating support on likelihood-based trees. Expand
Early origin of viviparity and multiple reversions to oviparity in squamate reptiles.
TLDR
This work reconstructs ancestral parity modes accounting for state-dependent diversification in a large-scale phylogenetic analysis and finds strong support for an early origin of viviparity at the base of Squamata, and a complex pattern of subsequent transitions. Expand
PHYLOGENETIC ANALYSES REVEAL UNEXPECTED PATTERNS IN THE EVOLUTION OF REPRODUCTIVE MODES IN FROGS
TLDR
This work analyzes the evolution of anuran reproductive modes using comparative methods on a phylogeny and matched life‐history database of 720 species, finding significant associations between terrestrial reproduction and reduced clutch size, larger egg size, reduced adult size, parental care, and occurrence in wetter and warmer regions. Expand
The interplay of past diversification and evolutionary isolation with present imperilment across the amphibian tree of life
TLDR
A phylogeny of nearly all extant amphibian species reveals biogeographic patterns of evolutionary distinctiveness and current threat exposure that will inform conservation strategies for these groups, suggesting opportunities for integrating evolutionary position and phylogenetic heritage in addressing the current extinction crisis. Expand
Fully-sampled phylogenies of squamates reveal evolutionary patterns in threat status
TLDR
The findings show no association between threat status and ED, suggesting that future extinctions may not result in a disproportionate loss of evolutionary history and that immediate efforts should focus on geckos, iguanas, and chameleons, representing 67% of high- ED threatened species and 57% of Unassessed high-ED lineages. Expand
Evolutionary and Biogeographic Origins of High Tropical Diversity in Old World Frogs (Ranidae)
TLDR
A strong relationship between the timing of colonization of each region and its current diversity, with recent colonization of temperate regions from tropical regions is found, showing the importance of historical biogeography in explaining high species richness in both the New World and Old World tropics. Expand
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