14 janv. 439000000 av. J.-C. - Ordovician–Silurian Mass Extinction
Description:
Causes:Glaciation & Sea-Level Drop – A major ice age, likely triggered by the uplift of the Appalachian Mountains, caused global cooling, glaciation, and a dramatic fall in sea levels, reducing shallow marine habitats.
Anoxia & Climate Change – As ice sheets melted, sea levels rose rapidly, leading to ocean anoxia (low oxygen), further stressing marine ecosystems.
Ajouté au bande de temps:
Date:
14 janv. 439000000 av. J.-C.
Maintenaint
~ Il y a 5883516 ans