Plotting the geological timescale in R

225px-Calycoceras_(Newboldiceras)_asiaticum_JIMBO_spinosum_KOSSMAT_microconchI’ve been figuring out nice ways to use R to plot the entire geological timescale. This being R, there is a package (called “geoscale“) which does this already, but I want one where the age is converted linearly to greyscale, and which can fit entirely onto one page, with the short periods of the Holocene and Pleistocene crammed in somehow. I also want to be able to update it easily when new values are published. Continue reading