Fig. 5: Temporal correlation of late Cambrian–earliest Ordovician biotic and abiotic events calibrated to the Baltoscandian radioisotopically anchored astrochronological framework.

Elevated extinction rates coincide with extreme heat and high sea level, whereas the rapid Jiangshanian rebound occurs at ~492 Ma while temperatures were lower. Generic richness data based on refs. ^5,88; δ¹³C_org data from the Albjära-1 core in this study and δ¹³C_Carb curve from GTS2020⁴⁹. Temperature data based on ref. ⁷⁴ with blue shading denoting the current tropical sea surface temperature range, red above that window. Sea-level curve adopted from ref. ⁵. The base of Stage 10 defined as in Fig. 1. Blue and orange shaded intervals represent Scandinavian biozones as shown in Fig. 2 except the abbreviation Ac Acerocarina Superzone.