Modelling determinants of extinction across two Mesozoic hyperthermal events.

ABSTRACT: The Late Triassic and Early Toarcian extinction events are both associated with greenhouse warming events triggered by massive volcanism. These Mesozoic hyperthermals were responsible for the mass extinction of marine organisms and resulted in significant ecological upheaval. It has, however, been suggested that these events merely involved intensification of background extinction rates rather than significant shifts in the macroevolutionary regime and extinction selectivity. Here, we apply a multivariate modelling approach to a vast global database of marine organisms to test whether extinction selectivity varied through the Late Triassic and Early Jurassic. We show that these hyperthermals do represent shifts in the macroevolutionary regime and record different extinction selectivity com

SUBMITTER: Dunhill AM 

PROVIDER: S-EPMC6234883 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature