zone Pratitanotherium mongoliense zone Amynodon mongoliensis PFitanotheres Eudinoceras, Andrewsarchus zone Altai piedmont Orok Nor Basin | Kholobolchi 1000’ + | = i teenstraate Lizernes K nae ast Sr Woesten “a : cn gx {L Na ge g Keersel adig A aven, Leon ben, LF bade D Da SZ a S,