ur-continent
nounEtymology Borrowed from German Urkontinent, coined by Alfred Wegener, equivalent to ur- + continent.
1
An original or primordial continent or landmass.
- The second group of convection currents operated in the upper half of the mantle only, split the ur-continent and carried North and South America away from Eurasia, explaining the similarity in the two coastlines—[…]2012, M. Sears, D. Merriman, Oceanography: The Past:
2
Pangaea