R Alexander Pyron

Summary

Publications

  1. doi request reprint A large-scale phylogeny of Amphibia including over 2800 species, and a revised classification of extant frogs, salamanders, and caecilians
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, United States
    Mol Phylogenet Evol 61:543-83. 2011
  2. doi request reprint Extinction, ecological opportunity, and the origins of global snake diversity
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA
    Evolution 66:163-78. 2012
  3. ncbi request reprint A taxonomic revision of boas (serpentes: boidae)
    R Alexander Pyron
    Dept of Biological Sciences, The George Washington University, 2023 G St NW, Washington, D C 20052 Email
    Zootaxa 3846:249-60. 2014
  4. ncbi request reprint Biogeographic analysis reveals ancient continental vicariance and recent oceanic dispersal in amphibians
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G Street NW, Washington, DC 20052, USA
    Syst Biol 63:779-97. 2014
  5. ncbi request reprint Systematics of the blindsnakes (Serpentes: Scolecophidia: Typhlopoidea) based on molecular and morphological evidence
    Robert Alexander Pyron
    Dept of Biological Sciences, The George Washington University, 2023 G St NW, Washington, D C 20052 Email
    Zootaxa 3829:1-81. 2014
  6. ncbi request reprint Phylogenetic estimates of speciation and extinction rates for testing ecological and evolutionary hypotheses
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA Electronic address
    Trends Ecol Evol 28:729-36. 2013
  7. pmc A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA
    BMC Evol Biol 13:93. 2013
  8. doi request reprint Genus-level phylogeny of snakes reveals the origins of species richness in Sri Lanka
    R Alexander Pyron
    Dept of Biological Sciences, The George Washington University, 2023 G St, NW, Washington, DC 20052, United States
    Mol Phylogenet Evol 66:969-78. 2013
  9. doi request reprint Trait-dependent diversification and the impact of palaeontological data on evolutionary hypothesis testing in New World ratsnakes (tribe Lampropeltini)
    R A Pyron
    Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA
    J Evol Biol 25:497-508. 2012
  10. doi request reprint Divergence time estimation using fossils as terminal taxa and the origins of Lissamphibia
    R Alexander Pyron
    Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794 5245, USA
    Syst Biol 60:466-81. 2011

Detail Information

Publications23

  1. doi request reprint A large-scale phylogeny of Amphibia including over 2800 species, and a revised classification of extant frogs, salamanders, and caecilians
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, United States
    Mol Phylogenet Evol 61:543-83. 2011
    ....
  2. doi request reprint Extinction, ecological opportunity, and the origins of global snake diversity
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA
    Evolution 66:163-78. 2012
    ..We suggest that clade-level extinction may provide a key mechanism for explaining negative or hump-shaped relationships between clade age and diversity, and the prevalence of ancient, species-poor lineages in numerous groups...
  3. ncbi request reprint A taxonomic revision of boas (serpentes: boidae)
    R Alexander Pyron
    Dept of Biological Sciences, The George Washington University, 2023 G St NW, Washington, D C 20052 Email
    Zootaxa 3846:249-60. 2014
    ..1999).  ..
  4. ncbi request reprint Biogeographic analysis reveals ancient continental vicariance and recent oceanic dispersal in amphibians
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G Street NW, Washington, DC 20052, USA
    Syst Biol 63:779-97. 2014
    ..Amphibians; caecilians; dispersal; frogs; historical biogeography; oceanic dispersal; salamanders; vicariance.]. ..
  5. ncbi request reprint Systematics of the blindsnakes (Serpentes: Scolecophidia: Typhlopoidea) based on molecular and morphological evidence
    Robert Alexander Pyron
    Dept of Biological Sciences, The George Washington University, 2023 G St NW, Washington, D C 20052 Email
    Zootaxa 3829:1-81. 2014
    ..Diagnoses based on morphology are provided for all 19 typhlopoid genera, accounting for all 275 species. This taxonomy provides a robust platform for future revisions and description of new species.  ..
  6. ncbi request reprint Phylogenetic estimates of speciation and extinction rates for testing ecological and evolutionary hypotheses
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA Electronic address
    Trends Ecol Evol 28:729-36. 2013
    ....
  7. pmc A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA
    BMC Evol Biol 13:93. 2013
    ..Such an estimate is invaluable for comparative evolutionary studies, and to address their classification. Here, we present the first large-scale phylogenetic estimate for Squamata...
  8. doi request reprint Genus-level phylogeny of snakes reveals the origins of species richness in Sri Lanka
    R Alexander Pyron
    Dept of Biological Sciences, The George Washington University, 2023 G St, NW, Washington, DC 20052, United States
    Mol Phylogenet Evol 66:969-78. 2013
    ....
  9. doi request reprint Trait-dependent diversification and the impact of palaeontological data on evolutionary hypothesis testing in New World ratsnakes (tribe Lampropeltini)
    R A Pyron
    Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA
    J Evol Biol 25:497-508. 2012
    ....
  10. doi request reprint Divergence time estimation using fossils as terminal taxa and the origins of Lissamphibia
    R Alexander Pyron
    Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794 5245, USA
    Syst Biol 60:466-81. 2011
    ..These results suggest that the application of fossils as minima or maxima on molecular phylogenies should be supplemented or supplanted by combined evidence analyses whenever possible...
  11. doi request reprint The phylogeny of advanced snakes (Colubroidea), with discovery of a new subfamily and comparison of support methods for likelihood trees
    R Alexander Pyron
    Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794 5245, USA
    Mol Phylogenet Evol 58:329-42. 2011
    ..Our 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...
  12. pmc Large-scale phylogenetic analyses reveal the causes of high tropical amphibian diversity
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G Street NW, Washington, DC 20052, USA, Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721 0088, USA
    Proc Biol Sci 280:20131622. 2013
    ..Furthermore, we estimate strikingly low tropical extinction rates over geological time scales, in stark contrast to the dramatic losses of diversity occurring in tropical regions presently. ..
  13. doi request reprint Phylogenetic origins of local-scale diversity patterns and the causes of Amazonian megadiversity
    John J Wiens
    Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794 5245, USA
    Ecol Lett 14:643-52. 2011
    ..Specifically, sympatry between clades seems to slow diversification and trait evolution, but prevents neither the accumulation of local richness over time nor the co-occurrence of similar species...
  14. doi request reprint Coalescent species delimitation in milksnakes (genus Lampropeltis) and impacts on phylogenetic comparative analyses
    Sara Ruane
    Department of Biology, College of Staten Island, 2800 Victory Blvd, Staten Island, NY 10314, USA The Graduate Center, City University of New York, 365 5th Avenue, NY, NY 10016, USA Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Box 351800, Seattle, WA 98195 1800, USA Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC 20052, USA and Department of Herpetology, American Museum of Natural History, Central Park West and 79th St, New York, NY 10024
    Syst Biol 63:231-50. 2014
    ..This study highlights the crucial interaction among coalescent-based phylogeography and species delimitation, systematics, and species diversification analyses. ..
  15. ncbi request reprint A likelihood method for assessing molecular divergence time estimates and the placement of fossil calibrations
    R Alexander Pyron
    The Graduate School and University Center, The City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
    Syst Biol 59:185-94. 2010
    ..The method is illustrated with an example using an expanded phylogenetic estimate of the Gnathostomata, inferred with relaxed-clock molecular dating methods...
  16. doi request reprint Evolutionary and biogeographic origins of high tropical diversity in old world frogs (Ranidae)
    John J Wiens
    Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York 11794, USA
    Evolution 63:1217-31. 2009
    ..Instead, these results show the importance of historical biogeography in explaining high species richness in both the New World and Old World tropics...
  17. doi request reprint How does ecological opportunity influence rates of speciation, extinction, and morphological diversification in New World ratsnakes (tribe Lampropeltini)?
    Frank T Burbrink
    Department of Biology, The Graduate School and University Center, The City University of New York, 365 Fifth Avenue, New York, New York 10016, USA
    Evolution 64:934-43. 2010
    ..This evidence runs counter to the general Pleistocene species pump model...
  18. doi request reprint Body size as a primary determinant of ecomorphological diversification and the evolution of mimicry in the lampropeltinine snakes (Serpentes: Colubridae)
    R Alexander Pyron
    Department of Biology, The Graduate School and University Center, The City University of New York, New York, NY 10016, USA
    J Evol Biol 22:2057-67. 2009
    ....
  19. doi request reprint The taming of the skew: estimating proper confidence intervals for divergence dates
    Frank T Burbrink
    The College of Staten Island CUNY, Department of Biology, 6S 143, 2800 Victory Boulevard, Staten Island, NY 10314, USA
    Syst Biol 57:317-28. 2008
  20. doi request reprint The impact of gene-tree/species-tree discordance on diversification-rate estimation
    Frank T Burbrink
    Department of Biology, The College of Staten Island, The City University of New York, Staten Island, New York 10314, USA
    Evolution 65:1851-61. 2011
    ..This is corroborated with an empirical dataset of North American fence lizards (Sceloporus)...
  21. ncbi request reprint Early origin of viviparity and multiple reversions to oviparity in squamate reptiles
    R Alexander Pyron
    Department of Biological Sciences, The George Washington University, 2023 G St NW, Washington, DC, 20052, USA
    Ecol Lett 17:13-21. 2014
    ..These results suggest that parity mode is a labile trait that shifts frequently in response to ecological conditions. ..
  22. pmc Evidence for determinism in species diversification and contingency in phenotypic evolution during adaptive radiation
    Frank T Burbrink
    Department of Biology, The College of Staten Island, The City University of New York, 2800 Victory Boulevard, Staten Island, NY 10314, USA
    Proc Biol Sci 279:4817-26. 2012
    ..It also suggests that processes of phenotypic diversification cannot be predicted solely from the existence of an AR or knowledge of the process of diversification...
  23. pmc Claims of potential expansion throughout the U.S. by invasive python species are contradicted by ecological niche models
    R Alexander Pyron
    Department of Biology, The Graduate School and University Center, The City University of New York, New York, New York, United States of America
    PLoS ONE 3:e2931. 2008
    ..However, the ecological limitations of the Burmese python are not known and the possible effects of global warming on the potential expansion of the species are also unclear...