Ordovician (488 mya - 444 mya) (19 sept. 488000000 av. J.-C. – 20 mai 444000000 av. J.-C.)
Description:
Invertebrates dominated the oceans (mostly molluscs and arthropods)Ajouté au bande de temps:
Date:
19 sept. 488000000 av. J.-C.
20 mai 444000000 av. J.-C.
~ 5883516 years