Paleo Maps

[gmbra@cygnus.uwa.edu.au]

Does anyone know of a source for maps that show the continents as they are
today (undistorted) with and overlay of the relative land masses positions
for various times across the Mesozoic? I've checked a number of web sources
without luck. I can find maps that show the opposite of what I want ie land
masses for Mesozoic times with todays continents superimposed, but the
coastlines of today are distorted to fit the prehistoric map, whereas I
want it the other way around. If there is no such source, can anyone
suggest (to a non-cartographer) how I might go about constructing such maps.
Thanks
Graeme Worth