Guzhangian (jan 1, 500500000 BC – jan 1, 497000000 BC)
Description:
The Guzhangian is an uppermost stage of the Miaolingian Series of the Cambrian. It follows the Drumian Stage and precedes the Paibian Stage of the Furongian Series. The base is defined as the first appearance of the trilobite Lejopyge laevigata around 500.5 million years ago. The Guzhangian-Paibian boundary is marked by the first appearance of the trilobite Glyptagnostus reticulatus around 497 million years ago.Added to timeline:
Date:
jan 1, 500500000 BC
jan 1, 497000000 BC
~ 3502325 years