قالب:Cretaceous graphical timeline
Thanks for editing this timeline. While the syntax may look complicated, it's really quite simple.
The periods should all be accurate, as they are taken from the 2004 geological timescale, so you are most likely to want to edit the arrowed notes. Scroll down towards the bottom and you'll notice something like:
|note1=Something happened |note1-at=-200
|The above documentation is transcluded from قالب:Geology timeline/doc. (edit | history)
Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages.
Subpages of this template.