Fig. 5: Regional biodiversity.

Comparison of brachiopod fossil biodiversity⁶ (black curves) with our simulations (curves with envelopes indicating median ±1 standard deviation) for Laurentia (a), Siberia (b), South China (c) and Baltica (d), for two scenarios as per Fig. 1: proxy-derived global climate cooling¹⁰ (colored curves) and theoretical constant climatic state (sensitivity test to the continental configuration; gray).