= Paleocene
{c}
The <Paleocene> is the earliest <Palaeogene> epoch, approximately $66$ to $56$ million years ago.<International Chronostratigraphic Chart by International Commission on Stratigraphy (2026-06)>[Paleocene row]{ref} It follows the <Cretaceous> and precedes the <Eocene>. Correlating the same interval between separated <sedimentary rocks> requires independent stratigraphic evidence; thickness alone is insufficient because deposition rates, erosion and missing intervals differ between sites.
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