{{epoch|{{PAGENAME}}}} dated from 65 million years ago at the [[K-T Event]] at the end of the [[Jurassic]].
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According to [[theory of evolution|evolutionary]] scientists, the Paleocene epoch (period of time) dated from dated from 65 million years ago at the [[K-T Event]] at the end of the [[Jurassic]].
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[[Mammals]] which had first appeared during the [[Triassic]] now had the opportunity to take over many ecological niches left vacant by the [[dinosaurs]].
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According to evolutionary scientists [[Mammals]] which had first appeared during the [[Triassic]] now had the opportunity to take over many ecological niches left vacant by the [[dinosaurs]].