But that's hardly proof it exists in the same timeline as Doctor Who, is it?
The first piece of evidence is that the Land of the Lost is filled with TARDISes. The Marshall family call them "pylons" but they're clearly TARDISes. They have the same basic exterior structure and are impervious to damage.
@SKleefeld Alternate theory: The LotL is a middle-step between SIDRATs and TARDISes.
Either way, though, I wonder if/how Sleestaks, Silurians, and Sea Devils are connected...
@SKleefeld and this planet contains things like raw materials and power stations and everything, and the companion portal for every one of the pods. When you link two pods, systems on this planet move the two portals together, so you briefly transit from one pod to the pocket dimension planet and then to the other pod.
If you squint, LotL could be a Timelord version of this...