aged_upapatosauruscera_(the_land_before_time)ceratopsianceratopsidchasmosaurinechomper_(the_land_before_time)dinosaurdiplodociddiplodocoiddj_coulzdon_bluthducky_(the_land_before_time)femaleferalflyingfrill_(anatomy)grouphadrosauridlittlefootmalemarginocephalianornithischianornithopodpetrieprehistoric_speciespteranodonpteranodontidpterosaurreptilesaurischiansaurolophussauropodsauropodomorphscaliespike_(the_land_before_time)spikesspikes_(anatomy)stegosaurianstegosaurusthe_land_before_timetheropodthyreophorantriceratopstyrannosauridtyrannosauroidtyrannosaurustyrannosaurus_rex