ଛାଞ୍ଚ:Period start

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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 doi: 10.1002/bies.20507
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Cambrian stages from doi:10.1016/j.palaeo.2010.05.041
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Mayanian dates from Khomentovsky, V; Nagovitsin, K; Postnikov, A (2008). "Mayanian (1100–850 Ma) – Prebaikalian Upper Riphean of Siberia". Russian Geology and Geophysics. 49 (1): 1. doi:10.1016/j.rgg.2007.12.001.