Fortunian
First stage of Cambrian Period
Fortunian
The Fortunian age marks the beginning of the Phanerozoic Eon, the Paleozoic Era, and the Cambrian Period. It is the first of the two stages of the Terreneuvian series. Its base is defined as the first appearance of the trace fossil Treptichnus pedum 538.8 million years ago. The top of the Fortunian which is the base of the Stage 2 of the Cambrian has not been formally defined yet, but will correspond to the appearance of an Archeocyatha species or "Small shelly fossils" approximately 529 million years ago. The name Fortunian is derived from the town of Fortune on the Burin Peninsula, near the GSSP and Fortune Bay.
Read on Wikipedia · Image Liam Herringshaw, CC BY-SA 3.0
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