Wuliuan (1 janv. 506500000 av. J.-C. – 1 janv. 504500000 av. J.-C.)
Description:
The Wuliuan stage is the fifth stage of the Cambrian, and the first stage of the Miaolingian Series of the Cambrian. It was formally defined by the International Commission on Stratigraphy in 2018. Its base is defined by the first appearance of the trilobite species Oryctocephalus indicus; it ends with the beginning of the Drumian Stage, marked by the first appearance of the trilobite Ptychagnostus atavus around 504.5 million years ago.Ajouté au bande de temps:
Date:
1 janv. 506500000 av. J.-C.
1 janv. 504500000 av. J.-C.
~ 2001328 years