Terreneuvian (1 janv. 538800000 av. J.-C. – 1 janv. 521000000 av. J.-C.)
Description:
The Terreneuvian is the lowermost and oldest series of the Cambrian geological system. Its base is defined by the first appearance datum of the trace fossil Treptichnus pedum around 538.8 million years ago. Its top is defined as the first appearance of trilobites in the stratigraphic record around 521 million years ago. This series' name was formally accepted by the International Commission on Stratigraphy in 2007.Ajouté au bande de temps:
Date:
1 janv. 538800000 av. J.-C.
1 janv. 521000000 av. J.-C.
~ 5883516 years