Template:Cambrian graphical timeline
From Wikipedia, the free encyclopedia
Key events in the Cambrian
-545 —
–
-540 —
–
-535 —
–
-530 —
–
-525 —
–
-520 —
–
-515 —
–
-510 —
–
-505 —
–
-500 —
–
-495 —
–
-490 —
–
←
Orsten Fauna
←
Sirius Passet Fauna[1]
←
First Trilobites
←
First Arthropod trace fossils
←
and Echinoderms
An approximate timescale of key Cambrian events.
The Cambrian explosion took place during the lower Cambrian, but its duration is poorly defined.
Axis scale: millions of years ago.
The Cambrian explosion took place during the lower Cambrian, but its duration is poorly defined.
Axis scale: millions of years ago.

