Fig. 1: Spatial patterns of simulated Ordovician biodiversity.
From: Impact of global climate cooling on Ordovician marine biodiversity

a–g Landmasses are shaded gray. Continental shelves are outlined in black. Robinson projection with parallels drawn every 30° latitude. G Gondwana, L Laurentia, B Baltica, S Siberia, C South China, Lr Laurussia (after docking of Baltica with Laurentia at 430 Ma).