Changes

According to evolutionary science, a period in time in earth's history dated from 65 million years ago at the [[K-T Event]] at the end of the [[Jurassic]].   

{{epoch|{{PAGENAME}}}} dated from 65 million years ago at the [[K-T Event]] at the end of the [[Jurassic]].   

[[Mammals]] which had first appeared during the [[Triassic]] now had the opportunity to take over many ecological niches left vacant by the [[dinosaurs]].

[[Mammals]] which had first appeared during the [[Triassic]] now had the opportunity to take over many ecological niches left vacant by the [[dinosaurs]].