Bản mẫu:Period start error
Giao diện
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/43/Test_Template_Info-Icon_-_Version_%282%29.svg/50px-Test_Template_Info-Icon_-_Version_%282%29.svg.png)
Templates for retrieving data about geological periods:
- {{period start}}
- {{period start error}}
- {{period end}}
- {{period end error}}
- {{period span}}
- {{next period}}
- {{period color}}
Templates for retrieving data about geological periods: