Difference between revisions 1417685 and 1725627 on cywiki

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Llinell amser ddaearegol
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<th style="background:#efefef;">Blynyddoedd a fuCP<sup>3,6</sup></th>
<th style="background:#efefef;">[[Cyfres (stratigraffeg)|Epoc]] /<br/>Cyfres</th>
<th style="background:#efefef;" colspan="2">Cyfnod Daearegol<sup>4,5</sup></th>
<th style="background:#efefef;">Gorgyfnod</th>
<th style="background:#efefef;">Eon</th>
<th style="background:#efefef;">Digwyddiadau pwysicaf</th>
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(contracted; show full)4.57 biliwn- ffurfiad y [[Ddaear]]
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[[Categori:Cyfnodau daearegol| ]]
[[Categori:Daeareg]]
[[Categori:Gwyddorau daear]]