1. When and how did the terrestrial mid-Permian mass extinction occur? Evidence from the tetrapod record of the Karoo Basin, South Africa.

    Proceedings of the Royal Society B: Biological ... 282(1811) (2015) PMID 26156768

    A mid-Permian (Guadalupian epoch) extinction event at approximately 260 Ma has been mooted for two decades. This is based primarily on invertebrate biostratigraphy of Guadalupian-Lopingian marine carbonate platforms in southern China, which are temporally constrained by correlation to the associ...
  2. Temporal acuity and the rate and dynamics of mass extinctions.

    PNAS 111(9):3203 (2014) PMID 24522110 PMCID PMC3948250

  3. Temporal acuity and the rate and dynamics of mass extinctions.

    PNAS 111(9):3203 (2014) PMID 24522110 PMCID PMC3948250

  4. Niche construction theory: a practical guide for ecologists.

    Quarterly Review of Biology 88(1):4 (2013) PMID 23653966

    Niche construction theory (NCT) explicitly recognizes environmental modication by organisms ("niche construction") and their legacy overtime ("ecological inheritance") to be evolutionary processes in their own right. Here we illustrate how niche construction theory provides usedl conceptual tool...
  5. Niche construction theory: a practical guide for ecologists.

    Quarterly Review of Biology 88(1):4 (2013) PMID 23653966

    Niche construction theory (NCT) explicitly recognizes environmental modication by organisms ("niche construction") and their legacy overtime ("ecological inheritance") to be evolutionary processes in their own right. Here we illustrate how niche construction theory provides usedl conceptual tool...
  6. The end of the Ediacara biota: Extinction, biotic replacement, or Cheshire Cat?

    Gondwana Research 23(2):558 (2013)

    The Ediacaran–Cambrian transition signals a drastic change in both diversity and ecosystem construction. The Ediacara biota (consisting of various metazoan stem lineages in addition to extinct eukaryotic clades) disappears, and is replaced by more familiar Cambrian and Paleozoic metazo...
  7. Novelties that change carrying capacity.

    Journal of Experimental Zoology, Part B: Molecu... 318(6):460 (2012) PMID 21796776

    Comparative developmental studies have revealed a rich array of details about the patterns and processes of morphological change in animals and increasingly in plants. But, applying these insights to the study of major episodes of evolutionary innovation requires understanding how these novel mo...
  8. Novelties that change carrying capacity.

    Journal of Experimental Zoology, Part B: Molecu... 318(6):460 (2012) PMID 21796776

    Comparative developmental studies have revealed a rich array of details about the patterns and processes of morphological change in animals and increasingly in plants. But, applying these insights to the study of major episodes of evolutionary innovation requires understanding how these novel mo...
  9. Macroevolution: Dynamics of Diversity

    Current Biology 21(24):R1000 (2011)

    The fossil record typically exhibits very dynamic patterns of innovation, diversification and extinction. In contrast, molecular phylogenies suggest smoother patterns of evolutionary change. Several new studies reconcile this difference and reveal more about the mechanisms behind macro...
  10. Macroevolution: dynamics of diversity.

    Current Biology 21(24):R1000 (2011) PMID 22192822

    The fossil record typically exhibits very dynamic patterns of innovation, diversification and extinction. In contrast, molecular phylogenies suggest smoother patterns of evolutionary change. Several new studies reconcile this difference and reveal more about the mechanisms behind macroevolutiona...
  11. Calibrating the end-Permian mass extinction.

    Science 334(6061):1367 (2011) PMID 22096103

    The end-Permian mass extinction was the most severe biodiversity crisis in Earth history. To better constrain the timing, and ultimately the causes of this event, we collected a suite of geochronologic, isotopic, and biostratigraphic data on several well-preserved sedimentary sections in South C...
  12. Calibrating the end-Permian mass extinction.

    Science 334(6061):1367 (2011) PMID 22096103

    The end-Permian mass extinction was the most severe biodiversity crisis in Earth history. To better constrain the timing, and ultimately the causes of this event, we collected a suite of geochronologic, isotopic, and biostratigraphic data on several well-preserved sedimentary sections in South C...
  13. The Cambrian conundrum: early divergence and later ecological success in the early history of animals.

    Science 334(6059):1091 (2011) PMID 22116879

    Diverse bilaterian clades emerged apparently within a few million years during the early Cambrian, and various environmental, developmental, and ecological causes have been proposed to explain this abrupt appearance. A compilation of the patterns of fossil and molecular diversification, comparat...
  14. The Cambrian conundrum: early divergence and later ecological success in the early history of animals.

    Science 334(6059):1091 (2011) PMID 22116879

    Diverse bilaterian clades emerged apparently within a few million years during the early Cambrian, and various environmental, developmental, and ecological causes have been proposed to explain this abrupt appearance. A compilation of the patterns of fossil and molecular diversification, comparat...
  15. Evolutionary uniformitarianism.

    Developmental Biology 357(1):27 (2011) PMID 21276788

    I present a new compilation of the distribution of the temporal distribution of new morphologies of marine invertebrates associated with the Ediacaran-Cambrian (578-510 Ma) diversification of Metazoa. Combining this data with previous work on the hierarchical structure of gene regulatory network...
  16. Evolutionary uniformitarianism

    Developmental Biology 357(1):27 (2011)

    I present a new compilation of the distribution of the temporal distribution of new morphologies of marine invertebrates associated with the Ediacaran–Cambrian (578–510 Ma) diversification of Metazoa. Combining this data with previous work on the hierarchical structure of gene regulatory ne...
  17. Simple model of recovery dynamics after mass extinction.

    Journal of Theoretical Biology 267(2):193 (2010) PMID 20804772

    Biotic recoveries following mass extinctions are characterized by a complex set of dynamics, including the rebuilding of whole ecologies from low-diversity assemblages of survivors and opportunistic species. Three broad classes of diversity dynamics during recovery have been suggested: an immedi...
  18. Simple model of recovery dynamics after mass extinction.

    Journal of Theoretical Biology 267(2):193 (2010) PMID 20804772

    Biotic recoveries following mass extinctions are characterized by a complex set of dynamics, including the rebuilding of whole ecologies from low-diversity assemblages of survivors and opportunistic species. Three broad classes of diversity dynamics during recovery have been suggested: an immedi...
  19. Evolutionary innovation and stability in animal gene networks.

    Journal of Experimental Zoology, Part B: Molecu... 314(3):182 (2010) PMID 19937660

  20. Evolutionary innovation and stability in animal gene networks.

    Journal of Experimental Zoology, Part B: Molecu... 314(3):182 (2010) PMID 19937660