北美西部晚坎帕阶的暴龙类化石记录在北部地区的落基山脉（蒙大拿州，艾伯塔）和西南地区（新墨西哥州，犹他州）依然有地理上差距。
The fossil record of late Campanian tyrannosauroids of western North America has a geographic gap between the Northern Rocky Mountain Region (Montana, Alberta) and the Southwest (New Mexico, Utah).
北美西部晚坎帕阶的暴龙类化石记录在北部地区的落基山脉（蒙大拿州，艾伯塔）和西南地区（新墨西哥州，犹他州）依然有地理上差距。
The fossil record of late Campanian tyrannosauroids of western North America has a geographic gap between the Northern Rocky Mountain Region (Montana, Alberta) and the Southwest (New Mexico, Utah).
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