28 févr. 444000000 av. J.-C. - Silurian Period
Description:
Much of the landmass that would become western North America was under a shallow ocean for much of the Silurian Period. These shallow waters enabled sunlight to penetrate, and marine animals underwent rapid differentiation.Ajouté au bande de temps:
Date:
28 févr. 444000000 av. J.-C.
Maintenaint
~ Il y a 5883516 ans