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Categories: evolution

  • Not all major faunal transitions are related to abrupt global perturbations that triggered mass extinctions, a study at Umeå University and University of Florida shows. Photo: Pxhere

    Gradual changes triggered historical shift in marine fauna

    Large asteroids or comets hitting Earth, massive volcanic eruptions and other single, deadly events are usually the focus for scientists seeking to reconstruct Earth’s past mass extinctions. In a new study, researchers from Umeå University and the University of Florida instead uncovered a new major transition between past marine faunas that could not be explained by a single catastrophic event.