Hi all, first post, I have a basic knowledge of PP and Excel

I would like to create a timeline in Excel or possibly PP for evolutionary dates. starting at 3.8 billion years ago, until present. I should like to enter specific dates and periods in a way that they show graphically in PP in fractional ratio to each other - so, for example two dates a million years apart would show at double the distance from each other than two dates 500 million years apart - and other ratios. I want to label the dates or periods.

I can't seem to find anything suitable on the web. I use 365

Can anyone help please

Z