Drumian (1 janv. 504500000 av. J.-C. – 1 janv. 500500000 av. J.-C.)
Description:
The Drumian is a stage of the Miaolingian Series of the Cambrian. It succeeds the Wuliuan and precedes the Guzhangian. The base is defined as the first appearance of the trilobite Ptychagnostus atavus around 504.5 million years ago. The top is defined as the first appearance of another trilobite Lejopyge laevigata around 500.5 million years ago.Ajouté au bande de temps:
Date:
1 janv. 504500000 av. J.-C.
1 janv. 500500000 av. J.-C.
~ 4002657 years