आकृति:Period start

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See also Category:Geological period templates.

Usage

Use the syntax {{Period start|period name|rounding (optional)}}

{{Period start|Cretaceous}}

produces:

145

{{Period start|Cretaceous|-1}}

produces:

150

References

Periods from the International Commission on Stratigraphy's stratigraphical timescale.

Burgess shale age from Butterfield, N. J. (२००६), "Hooking some stem-group "worms": fossil lophotrochozoans in the Burgess Shale", Bioessays 28 (12): 1161–1166, डिओआई:10.1002/bies.20507। 

Cambrian stages from आकृति:Cite doi

Mayanian dates from Khomentovsky, V.; Nagovitsin, K.; Postnikov, A (२००८), "Mayanian (1100–850 Ma) – Prebaikalian Upper Riphean of Siberia", Russian Geology and Geophysics 49 (1): 1, डिओआई:10.1016/j.rgg.2007.12.001। 

Period templates

This list is incomplete. You may help by expanding it

• Template:Next period
• Template:Period color
• Template:Period end
• Template:Period end error
• Template:Period infoboxes
• Template:Period span
• Template:Period span/brief
• Template:Period start
• Template:Period start error