The authors assess shell thickness and ornamentation in brachiopods during the Permian–Triassic mass extinction (PTME) and in foraminifera during both the PTME and early Toarcian oceanic anoxic event, finding that both groups reduced their morphological complexity and thus possibly saved on energetic costs during these stressful events.
- Fengyu Wang
- Seth Finnegan
- Haijun Song
