Bayesian analyses indicate bivalves did not drive the downfall of brachiopods following the Permian-Triassic mass extinction.

ABSTRACT: Certain times of major biotic replacement have often been interpreted as broadly competitive, mediated by innovation in the succeeding clades. A classic example was the switch from brachiopods to bivalves as major seabed organisms following the Permian-Triassic mass extinction (PTME), ~252 million years ago. This was attributed to competitive exclusion of brachiopods by the better adapted bivalves or simply to the fact that brachiopods had been hit especially hard by the PTME. The brachiopod-bivalve switch is emblematic of the global turnover of marine faunas from Palaeozoic-type to Modern-type triggered by the PTME. Here, using Bayesian analyses, we find that unexpectedly the two clades displayed similar large-scale trends of diversification before the Jurassic. Insight from a multivariat

SUBMITTER: Guo Z 

PROVIDER: S-EPMC10492784 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature